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pietru 2024-03-11 22:08:35 +01:00
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# webrtc_signaling This is modified version of https://github.com/godotengine/godot-demo-projects/tree/master/networking/webrtc_signaling
It adds ability for dynamic lobby host swap and ability to say should lobby have only 1 host...
# A WebSocket signaling server/client for WebRTC.
This demo is devided in 4 parts:
- The `server` folder contains the signaling server implementation written in GDScript (so it can be run by a game server running Godot)
- The `server_node` folder contains the signaling server implementation written in Node.js (if you don't plan to run a game server but only match-making).
- The `client` part contains the client implementation in GDScript.
- Itself divided into raw protocol and `WebRTCMultiplayer` handling.
- The `demo` contains a small app that uses it.
**NOTE**: You must extract the [latest version](https://github.com/godotengine/webrtc-native/releases) of the WebRTC GDNative plugin in the project folder to run from desktop.
Language: GDScript
Renderer: GLES 2
Check out this demo on the asset library: https://godotengine.org/asset-library/asset/537
## Protocol
The protocol is JSON based, and uses messages in the form:
```
{
"id": "number",
"type": "number",
"data": "string",
}
```
With `type` being the message type, `id` being a connected peer or `0`, and `data` being the message specific data.
Messages are the following:
- `0 = JOIN`, must be sent by client immediately after connection to get a lobby assigned or join a known one (via the `data` field).
This messages is also sent by server back to the client to notify the assigned lobby, or simply a successful join.
- `1 = ID`, sent by server to identify the client when it joins a room (the `id` field will contain the be assigned ID).
- `2 = PEER_CONNECT`, sent by server to notify new peers in the same lobby (the `id` field will contain the ID of the new peer).
- `3 = PEER_DISCONNECT`, sent by server to notify when a peer in the same lobby disconnects (the `id` field will contain the ID of the disconnected peer).
- `4 = OFFER`, sent by the client when creating a WebRTC offer then relayed back by the server to the destination peer.
- `5 = ANSWER`, sent by the client when creating a WebRTC answer then relayed back by the server to the destination peer.
- `6 = CANDIDATE`, sent by the client when generating new WebRTC candidates then relayed back by the server to the destination peer.
- `7 = SEAL`, sent by client to seal the lobby (only the client that created it is allowed to seal a lobby), and then back by the server to notify success.
When a lobby is sealed, no new client will be able to join, and the lobby will be destroyed (and clients disconnected) after 10 seconds.
For relayed messages (i.e. for `OFFER`, `ANSWER`, and `CANDIDATE`), the client will set the `id` field as the destination peer, then the server will replace it with the id of the sending peer, and send it to the proper destination.
## Screenshots
![Screenshot](screenshots/screenshot.png)

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extends "ws_webrtc_client.gd"
var rtc_mp: WebRTCMultiplayerPeer = WebRTCMultiplayerPeer.new()
var sealed := false
func _init():
connected.connect(self._connected)
disconnected.connect(self._disconnected)
offer_received.connect(self._offer_received)
answer_received.connect(self._answer_received)
candidate_received.connect(self._candidate_received)
lobby_joined.connect(self._lobby_joined)
lobby_sealed.connect(self._lobby_sealed)
peer_connected.connect(self._peer_connected)
peer_disconnected.connect(self._peer_disconnected)
func start(url, lobby = "", mesh:=true):
stop()
sealed = false
self.mesh = mesh
self.lobby = lobby
connect_to_url(url)
func stop():
multiplayer.multiplayer_peer = null
rtc_mp.close()
close()
func _create_peer(id, host_id):
var peer: WebRTCPeerConnection = WebRTCPeerConnection.new()
peer.initialize({
"iceServers": [ { "urls": ["stun:stun.l.google.com:19302","stun:tun.hoiio.com:3478","stun:stun.voip.aebc.com:3478","stun.services.mozilla.com:3478"] } ]
})
peer.session_description_created.connect(self._offer_created.bind(id))
peer.ice_candidate_created.connect(self._new_ice_candidate.bind(id))
rtc_mp.add_peer(peer, id)
print("Is peer host: %s" % [host_id != rtc_mp.get_unique_id()])
if id < rtc_mp.get_unique_id(): # So only one peer creates offers.
peer.create_offer()
return peer
func _new_ice_candidate(mid_name, index_name, sdp_name, id):
send_candidate(id, mid_name, index_name, sdp_name)
func _offer_created(type, data, id):
if not rtc_mp.has_peer(id):
return
print("created ", type)
rtc_mp.get_peer(id).connection.set_local_description(type, data)
if type == "offer": send_offer(id, data)
else: send_answer(id, data)
func _connected(id, use_mesh):
print("Connected %d, mesh: %s" % [id, use_mesh])
if use_mesh:
rtc_mp.create_mesh(id)
elif id == 1:
rtc_mp.create_server()
else:
rtc_mp.create_client(id)
multiplayer.multiplayer_peer = rtc_mp
func _lobby_joined(lobby):
self.lobby = lobby
func _lobby_sealed():
sealed = true
func _disconnected():
print("Disconnected: %d: %s" % [code, reason])
if not sealed:
stop() # Unexpected disconnect
func _peer_connected(id, host_id):
print("Peer connected %d" % id)
_create_peer(id, host_id)
func _peer_disconnected(id):
if rtc_mp.has_peer(id): rtc_mp.remove_peer(id)
func _offer_received(id, offer):
print("Got offer: %d" % id)
if rtc_mp.has_peer(id):
rtc_mp.get_peer(id).connection.set_remote_description("offer", offer)
func _answer_received(id, answer):
print("Got answer: %d" % id)
if rtc_mp.has_peer(id):
rtc_mp.get_peer(id).connection.set_remote_description("answer", answer)
func _candidate_received(id, mid, index, sdp):
if rtc_mp.has_peer(id):
rtc_mp.get_peer(id).connection.add_ice_candidate(mid, index, sdp)

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extends Node
enum Message {JOIN, ID, PEER_CONNECT, PEER_DISCONNECT, OFFER, ANSWER, CANDIDATE, SEAL}
@export var autojoin := true
@export var lobby := "" # Will create a new lobby if empty.
@export var mesh := true # Will use the lobby host as relay otherwise.
var ws: WebSocketPeer = WebSocketPeer.new()
var code = 1000
var reason = "Unknown"
signal lobby_joined(lobby)
signal connected(id, use_mesh)
signal disconnected()
signal peer_connected(id, host_id)
signal peer_disconnected(id)
signal offer_received(id, offer)
signal answer_received(id, answer)
signal candidate_received(id, mid, index, sdp)
signal lobby_sealed()
func connect_to_url(url):
close()
code = 1000
reason = "Unknown"
ws.connect_to_url(url)
func close():
ws.close()
func _process(delta):
var old_state: int = ws.get_ready_state()
if old_state == WebSocketPeer.STATE_CLOSED:
return
ws.poll()
var state = ws.get_ready_state()
if state != old_state and state == WebSocketPeer.STATE_OPEN and autojoin:
join_lobby(lobby)
while state == WebSocketPeer.STATE_OPEN and ws.get_available_packet_count():
if not _parse_msg():
print("Error parsing message from server.")
if state == WebSocketPeer.STATE_CLOSED:
code = ws.get_close_code()
reason = ws.get_close_reason()
disconnected.emit()
func _parse_msg():
var parsed = JSON.parse_string(ws.get_packet().get_string_from_utf8())
if typeof(parsed) != TYPE_DICTIONARY or not parsed.has("type") or not parsed.has("id") or \
typeof(parsed.get("data")) != TYPE_STRING:
return false
var msg := parsed as Dictionary
if not str(msg.type).is_valid_int() or not str(msg.id).is_valid_int():
return false
var type := str(msg.type).to_int()
var src_id := str(msg.id).to_int()
if type == Message.ID:
connected.emit(src_id, msg.data)
elif type == Message.JOIN:
lobby_joined.emit(msg.data)
elif type == Message.SEAL:
lobby_sealed.emit()
elif type == Message.PEER_CONNECT:
# Client connected
peer_connected.emit(src_id, str(msg.data).to_int())
elif type == Message.PEER_DISCONNECT:
# Client connected
peer_disconnected.emit(src_id)
elif type == Message.OFFER:
# Offer received
offer_received.emit(src_id, msg.data)
elif type == Message.ANSWER:
# Answer received
answer_received.emit(src_id, msg.data)
elif type == Message.CANDIDATE:
# Candidate received
var candidate: PackedStringArray = msg.data.split("\n", false)
if candidate.size() != 3:
return false
if not candidate[1].is_valid_int():
return false
candidate_received.emit(src_id, candidate[0], candidate[1].to_int(), candidate[2])
else:
return false
return true # Parsed
func join_lobby(lobby: String, single_host:=false):
var data = {"lobby":lobby,"single_host":single_host}
return _send_msg(Message.JOIN, 0 if mesh else 1, JSON.stringify(data))
func seal_lobby():
return _send_msg(Message.SEAL, 0)
func send_candidate(id, mid, index, sdp) -> int:
return _send_msg(Message.CANDIDATE, id, "\n%s\n%d\n%s" % [mid, index, sdp])
func send_offer(id, offer) -> int:
return _send_msg(Message.OFFER, id, offer)
func send_answer(id, answer) -> int:
return _send_msg(Message.ANSWER, id, answer)
func _send_msg(type: int, id: int, data:="") -> int:
return ws.send_text(JSON.stringify({
"type": type,
"id": id,
"data": data
}))

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extends Control
@onready var client = $Client
@onready var host = $VBoxContainer/Connect/Host
@onready var room = $VBoxContainer/Connect/RoomSecret
@onready var mesh = $VBoxContainer/Connect/Mesh
func _ready():
client.lobby_joined.connect(self._lobby_joined)
client.lobby_sealed.connect(self._lobby_sealed)
client.connected.connect(self._connected)
client.disconnected.connect(self._disconnected)
multiplayer.connected_to_server.connect(self._mp_server_connected)
multiplayer.connection_failed.connect(self._mp_server_disconnect)
multiplayer.server_disconnected.connect(self._mp_server_disconnect)
multiplayer.peer_connected.connect(self._mp_peer_connected)
multiplayer.peer_disconnected.connect(self._mp_peer_disconnected)
@rpc("any_peer", "call_local")
func ping(argument):
_log("[Multiplayer] Ping from peer %d: arg: %s" % [multiplayer.get_remote_sender_id(), argument])
func _mp_server_connected():
_log("[Multiplayer] Server connected (I am %d)" % client.rtc_mp.get_unique_id())
func _mp_server_disconnect():
_log("[Multiplayer] Server disconnected (I am %d)" % client.rtc_mp.get_unique_id())
func _mp_peer_connected(id: int):
_log("[Multiplayer] Peer %d connected" % id)
func _mp_peer_disconnected(id: int):
_log("[Multiplayer] Peer %d disconnected" % id)
func _connected(id):
_log("[Signaling] Server connected with ID: %d" % id)
func _disconnected():
_log("[Signaling] Server disconnected: %d - %s" % [client.code, client.reason])
func _lobby_joined(lobby):
_log("[Signaling] Joined lobby %s" % lobby)
func _lobby_sealed():
_log("[Signaling] Lobby has been sealed")
func _log(msg):
print(msg)
$VBoxContainer/TextEdit.text += str(msg) + "\n"
func _on_peers_pressed():
_log(multiplayer.get_peers())
func _on_ping_pressed():
ping.rpc(randf())
func _on_seal_pressed():
client.seal_lobby()
func _on_start_pressed():
client.start(host.text, room.text, mesh.button_pressed)
func _on_stop_pressed():
client.stop()

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[gd_scene load_steps=3 format=3 uid="uid://cpwp4xx6mv5p"]
[ext_resource type="Script" path="res://demo/client_ui.gd" id="1"]
[ext_resource type="Script" path="res://client/multiplayer_client.gd" id="2"]
[node name="ClientUI" type="Control"]
layout_mode = 3
anchors_preset = 0
offset_right = 1024.0
offset_bottom = 600.0
size_flags_horizontal = 3
size_flags_vertical = 3
script = ExtResource("1")
[node name="Client" type="Node" parent="."]
script = ExtResource("2")
[node name="VBoxContainer" type="VBoxContainer" parent="."]
layout_mode = 1
anchors_preset = 15
anchor_right = 1.0
anchor_bottom = 1.0
grow_horizontal = 2
grow_vertical = 2
[node name="Connect" type="HBoxContainer" parent="VBoxContainer"]
layout_mode = 2
[node name="Label" type="Label" parent="VBoxContainer/Connect"]
layout_mode = 2
text = "Connect to:"
[node name="Host" type="LineEdit" parent="VBoxContainer/Connect"]
layout_mode = 2
size_flags_horizontal = 3
text = "ws://localhost:9080"
[node name="Room" type="Label" parent="VBoxContainer/Connect"]
layout_mode = 2
size_flags_vertical = 5
text = "Room"
[node name="RoomSecret" type="LineEdit" parent="VBoxContainer/Connect"]
layout_mode = 2
placeholder_text = "secret"
[node name="Mesh" type="CheckBox" parent="VBoxContainer/Connect"]
layout_mode = 2
button_pressed = true
text = "Mesh"
[node name="HBoxContainer" type="HBoxContainer" parent="VBoxContainer"]
layout_mode = 2
[node name="Start" type="Button" parent="VBoxContainer/HBoxContainer"]
layout_mode = 2
text = "Start"
[node name="Stop" type="Button" parent="VBoxContainer/HBoxContainer"]
layout_mode = 2
text = "Stop"
[node name="Seal" type="Button" parent="VBoxContainer/HBoxContainer"]
layout_mode = 2
text = "Seal"
[node name="Ping" type="Button" parent="VBoxContainer/HBoxContainer"]
layout_mode = 2
text = "Ping"
[node name="Peers" type="Button" parent="VBoxContainer/HBoxContainer"]
layout_mode = 2
text = "Print peers"
[node name="TextEdit" type="TextEdit" parent="VBoxContainer"]
layout_mode = 2
size_flags_vertical = 3
[connection signal="pressed" from="VBoxContainer/HBoxContainer/Start" to="." method="_on_start_pressed"]
[connection signal="pressed" from="VBoxContainer/HBoxContainer/Stop" to="." method="_on_stop_pressed"]
[connection signal="pressed" from="VBoxContainer/HBoxContainer/Seal" to="." method="_on_seal_pressed"]
[connection signal="pressed" from="VBoxContainer/HBoxContainer/Ping" to="." method="_on_ping_pressed"]
[connection signal="pressed" from="VBoxContainer/HBoxContainer/Peers" to="." method="_on_peers_pressed"]

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extends Control
func _enter_tree():
for c in $VBoxContainer/Clients.get_children():
# So each child gets its own separate MultiplayerAPI.
get_tree().set_multiplayer(
MultiplayerAPI.create_default_interface(),
NodePath("%s/VBoxContainer/Clients/%s" % [get_path(), c.name])
)
func _ready():
if OS.get_name() == "HTML5":
$VBoxContainer/Signaling.hide()
func _on_listen_toggled(button_pressed):
if button_pressed:
$Server.listen(int($VBoxContainer/Signaling/Port.value))
else:
$Server.stop()
func _on_LinkButton_pressed():
OS.shell_open("https://github.com/godotengine/webrtc-native/releases")

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[gd_scene load_steps=4 format=3 uid="uid://5p1bp2kcs0py"]
[ext_resource type="Script" path="res://demo/main.gd" id="1"]
[ext_resource type="PackedScene" uid="uid://cpwp4xx6mv5p" path="res://demo/client_ui.tscn" id="2"]
[ext_resource type="Script" path="res://server/ws_webrtc_server.gd" id="3"]
[node name="Control" type="Control"]
layout_mode = 3
anchor_left = 0.0136719
anchor_top = 0.0166667
anchor_right = 0.986328
anchor_bottom = 0.983333
script = ExtResource("1")
[node name="VBoxContainer" type="VBoxContainer" parent="."]
layout_mode = 0
anchor_right = 1.0
anchor_bottom = 1.0
grow_horizontal = 2
grow_vertical = 2
[node name="Signaling" type="HBoxContainer" parent="VBoxContainer"]
layout_mode = 2
[node name="Label" type="Label" parent="VBoxContainer/Signaling"]
layout_mode = 2
text = "Signaling server:"
[node name="Port" type="SpinBox" parent="VBoxContainer/Signaling"]
layout_mode = 2
min_value = 1025.0
max_value = 65535.0
value = 9080.0
[node name="ListenButton" type="Button" parent="VBoxContainer/Signaling"]
layout_mode = 2
toggle_mode = true
text = "Listen"
[node name="CenterContainer" type="CenterContainer" parent="VBoxContainer/Signaling"]
layout_mode = 2
size_flags_horizontal = 3
size_flags_vertical = 3
[node name="LinkButton" type="LinkButton" parent="VBoxContainer/Signaling/CenterContainer"]
layout_mode = 2
text = "Make sure to download the GDNative WebRTC Plugin and place it in the project folder"
[node name="Clients" type="GridContainer" parent="VBoxContainer"]
layout_mode = 2
size_flags_horizontal = 3
size_flags_vertical = 3
columns = 2
[node name="ClientUI" parent="VBoxContainer/Clients" instance=ExtResource("2")]
layout_mode = 2
[node name="ClientUI2" parent="VBoxContainer/Clients" instance=ExtResource("2")]
layout_mode = 2
[node name="ClientUI3" parent="VBoxContainer/Clients" instance=ExtResource("2")]
layout_mode = 2
[node name="ClientUI4" parent="VBoxContainer/Clients" instance=ExtResource("2")]
layout_mode = 2
[node name="Server" type="Node" parent="."]
script = ExtResource("3")
[connection signal="toggled" from="VBoxContainer/Signaling/ListenButton" to="." method="_on_listen_toggled"]
[connection signal="pressed" from="VBoxContainer/Signaling/CenterContainer/LinkButton" to="." method="_on_LinkButton_pressed"]

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; Engine configuration file.
; It's best edited using the editor UI and not directly,
; since the parameters that go here are not all obvious.
;
; Format:
; [section] ; section goes between []
; param=value ; assign values to parameters
config_version=5
[application]
config/name="WebRTC Signaling Example"
config/description="A WebSocket signaling server/client for WebRTC.
This demo is devided in 4 parts.
The protocol is text based, and composed by a command and possibly
multiple payload arguments, each separated by a new line."
config/tags=PackedStringArray("demo", "network", "official")
run/main_scene="res://demo/main.tscn"
config/features=PackedStringArray("4.2")
[debug]
gdscript/warnings/shadowed_variable=false
gdscript/warnings/unused_argument=false
[display]
window/stretch/mode="canvas_items"
window/stretch/aspect="expand"
[network]
modules/webrtc_gdnative_script="res://demo/webrtc/webrtc.gdns"

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extends Node
enum Message {JOIN, ID, PEER_CONNECT, PEER_DISCONNECT, OFFER, ANSWER, CANDIDATE, SEAL}
const TIMEOUT = 1000 # Unresponsive clients times out after 1 sec
const SEAL_TIME = 10000 # A sealed room will be closed after this time
const ALFNUM = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
var _alfnum = ALFNUM.to_ascii_buffer()
var rand: RandomNumberGenerator = RandomNumberGenerator.new()
var lobbies: Dictionary = {}
var tcp_server := TCPServer.new()
var peers: Dictionary = {}
class Peer extends RefCounted:
var id = -1
var lobby = ""
var time = Time.get_ticks_msec()
var ws = WebSocketPeer.new()
func _init(peer_id, tcp):
id = peer_id
ws.accept_stream(tcp)
func is_ws_open() -> bool:
return ws.get_ready_state() == WebSocketPeer.STATE_OPEN
func send(type: int, id: int, data:=""):
return ws.send_text(JSON.stringify({
"type": type,
"id": id,
"data": data,
}))
class Lobby extends RefCounted:
var peers: = {}
var peers_order: = []
var host: int = -1
var sealed: bool = false
var time = 0
var mesh := true
var single_host := false
func _init(host_id: int, use_mesh: bool, is_single_host: bool):
host = host_id
mesh = use_mesh
single_host = is_single_host
func join(peer: Peer) -> bool:
if sealed: return false
if not peer.is_ws_open(): return false
peer.send(Message.ID, peer.id, "true" if mesh else "") #(1 if peer.id == host else peer.id)
for p in peers.values():
if not p.is_ws_open():
continue
if not mesh and p.id != host:
# Only host is visible when using client-server
continue
p.send(Message.PEER_CONNECT, peer.id, str(peers_order[0]))
peer.send(Message.PEER_CONNECT, p.id, str(peers_order[0]))
peers[peer.id] = peer
peers_order.append(peer.id)
return true
func leave(peer: Peer) -> bool:
if peers_order.has(peer.id):
peers_order.erase(peer.id)
if peers_order.size()>0 and !single_host:
host=peers_order[0]
if not peers.has(peer.id): return false
peers.erase(peer.id)
var close = false
if peer.id == host:
# The room host disconnected, will disconnect all peers.
close = true
if sealed: return close
# Notify other peers.
for p in peers.values():
if not p.is_ws_open():
continue
if close:
# Disconnect peers.
p.ws.close()
else:
# Notify disconnection.
p.send(Message.PEER_DISCONNECT, peer.id)
return close
func seal(peer_id: int) -> bool:
# Only host can seal the room.
if host != peer_id: return false
sealed = true
for p in peers.values():
if not p.is_ws_open():
continue
p.send(Message.SEAL, 0)
time = Time.get_ticks_msec()
peers.clear()
peers_order.clear()
return true
func _process(delta):
poll()
func listen(port):
stop()
rand.seed = Time.get_unix_time_from_system()
tcp_server.listen(port)
func stop():
tcp_server.stop()
peers.clear()
func poll():
if not tcp_server.is_listening():
return
if tcp_server.is_connection_available():
var id = randi() % (1 << 31)
peers[id] = Peer.new(id, tcp_server.take_connection())
# Poll peers.
var to_remove := []
for p in peers.values():
# Peers timeout.
if p.lobby == "" and Time.get_ticks_msec() - p.time > TIMEOUT:
p.ws.close()
p.ws.poll()
while p.is_ws_open() and p.ws.get_available_packet_count():
if not _parse_msg(p):
print("Parse message failed from peer %d" % p.id)
to_remove.push_back(p.id)
p.ws.close()
break
var state = p.ws.get_ready_state()
if state == WebSocketPeer.STATE_CLOSED:
print("Peer %d disconnected from lobby: '%s'" % [p.id, p.lobby])
# Remove from lobby (and lobby itself if host).
if lobbies.has(p.lobby) and lobbies[p.lobby].leave(p):
print("Deleted lobby %s" % p.lobby)
lobbies.erase(p.lobby)
# Remove from peers
to_remove.push_back(p.id)
# Lobby seal.
for k in lobbies:
if not lobbies[k].sealed:
continue
if lobbies[k].time + SEAL_TIME < Time.get_ticks_msec():
# Close lobby.
for p in lobbies[k].peers:
p.ws.close()
to_remove.push_back(p.id)
# Remove stale peers
for id in to_remove:
peers.erase(id)
func _join_lobby(peer: Peer, lobby: String, mesh: bool, single_host:bool) -> bool:
if lobby == "":
for _i in range(0, 32):
lobby += char(_alfnum[rand.randi_range(0, ALFNUM.length()-1)])
lobbies[lobby] = Lobby.new(peer.id, mesh, single_host)
elif not lobbies.has(lobby):
return false
lobbies[lobby].join(peer)
peer.lobby = lobby
# Notify peer of its lobby
peer.send(Message.JOIN, 0, lobby)
print("Peer %d joined lobby: '%s'" % [peer.id, lobby])
return true
func _parse_msg(peer: Peer) -> bool:
var pkt_str: String = peer.ws.get_packet().get_string_from_utf8()
var parsed = JSON.parse_string(pkt_str)
if typeof(parsed) != TYPE_DICTIONARY or not parsed.has("type") or not parsed.has("id") or \
typeof(parsed.get("data")) != TYPE_STRING:
return false
if not str(parsed.type).is_valid_int() or not str(parsed.id).is_valid_int():
return false
var msg := {
"type": str(parsed.type).to_int(),
"id": str(parsed.id).to_int(),
"data": parsed.data
}
if msg.type == Message.JOIN:
if peer.lobby: # Peer must not have joined a lobby already!
return false
var dt = JSON.parse_string(msg.data)
return _join_lobby(peer, dt.lobby, msg.id == 0, dt.single_host)
if not lobbies.has(peer.lobby): # Lobby not found?
return false
var lobby = lobbies[peer.lobby]
if msg.type == Message.SEAL:
# Client is sealing the room
return lobby.seal(peer.id)
var dest_id: int = msg.id
if dest_id == MultiplayerPeer.TARGET_PEER_SERVER:
dest_id = lobby.host
if not peers.has(dest_id): # Destination ID not connected
return false
if peers[dest_id].lobby != peer.lobby: # Trying to contact someone not in same lobby
return false
if msg.type in [Message.OFFER, Message.ANSWER, Message.CANDIDATE]:
var source = peer.id#MultiplayerPeer.TARGET_PEER_SERVER if peer.id == lobby.host else peer.id
peers[dest_id].send(msg.type, source, msg.data)
return true
return false # Unknown message

52
server_node/.eslintrc.js Normal file
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module.exports = {
"env": {
"browser": true,
"es2021": true,
},
"extends": [
"airbnb-base",
],
"parserOptions": {
"ecmaVersion": 12,
},
"ignorePatterns": "*.externs.js",
"rules": {
"no-console": "off",
"func-names": "off",
// Use tabs for consistency with the C++ codebase.
"indent": ["error", "tab"],
"max-len": "off",
"no-else-return": ["error", {allowElseIf: true}],
"curly": ["error", "all"],
"brace-style": ["error", "1tbs", { "allowSingleLine": false }],
"no-bitwise": "off",
"no-continue": "off",
"no-self-assign": "off",
"no-tabs": "off",
"no-param-reassign": ["error", { "props": false }],
"no-plusplus": "off",
"no-unused-vars": ["error", { "args": "none" }],
"prefer-destructuring": "off",
"prefer-rest-params": "off",
"prefer-spread": "off",
"camelcase": "off",
"no-underscore-dangle": "off",
"max-classes-per-file": "off",
"prefer-arrow-callback": "off",
// Messes up with copyright headers in source files.
"spaced-comment": "off",
// Completely breaks emscripten libraries.
"object-shorthand": "off",
// Closure compiler (exported properties)
"quote-props": ["error", "consistent"],
"dot-notation": "off",
// No comma dangle for functions (it's madness, and ES2017)
"comma-dangle": ["error", {
"arrays": "always-multiline",
"objects": "always-multiline",
"imports": "always-multiline",
"exports": "always-multiline",
"functions": "never"
}],
}
};

1
server_node/.gitignore vendored Normal file
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node_modules/

36
server_node/package-lock.json generated Normal file
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{
"name": "signaling_server",
"version": "1.0.0",
"lockfileVersion": 3,
"requires": true,
"packages": {
"": {
"name": "signaling_server",
"version": "1.0.0",
"license": "MIT",
"dependencies": {
"ws": "^7.5.9"
}
},
"node_modules/ws": {
"version": "7.5.9",
"resolved": "https://registry.npmjs.org/ws/-/ws-7.5.9.tgz",
"integrity": "sha512-F+P9Jil7UiSKSkppIiD94dN07AwvFixvLIj1Og1Rl9GGMuNipJnV9JzjD6XuqmAeiswGvUmNLjr5cFuXwNS77Q==",
"engines": {
"node": ">=8.3.0"
},
"peerDependencies": {
"bufferutil": "^4.0.1",
"utf-8-validate": "^5.0.2"
},
"peerDependenciesMeta": {
"bufferutil": {
"optional": true
},
"utf-8-validate": {
"optional": true
}
}
}
}
}

20
server_node/package.json Normal file
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{
"name": "signaling_server",
"version": "1.0.0",
"description": "",
"main": "server.js",
"dependencies": {
"ws": "^7.5.9"
},
"devDependencies": {
"eslint": "^8.28.0",
"eslint-config-airbnb-base": "^14.2.1",
"eslint-plugin-import": "^2.23.4"
},
"scripts": {
"lint": "eslint server.js && echo \"Lint OK\" && exit 0",
"format": "eslint server.js --fix && echo \"Lint OK\" && exit 0"
},
"author": "Fabio Alessandrelli",
"license": "MIT"
}

297
server_node/server.js Normal file
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const WebSocket = require('ws');
const crypto = require('crypto');
const MAX_PEERS = 4096;
const MAX_LOBBIES = 1024;
const PORT = 9080;
const ALFNUM = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
const NO_LOBBY_TIMEOUT = 1000;
const SEAL_CLOSE_TIMEOUT = 10000;
const PING_INTERVAL = 10000;
const STR_NO_LOBBY = 'Have not joined lobby yet';
const STR_HOST_DISCONNECTED = 'Room host has disconnected';
const STR_ONLY_HOST_CAN_SEAL = 'Only host can seal the lobby';
const STR_SEAL_COMPLETE = 'Seal complete';
const STR_TOO_MANY_LOBBIES = 'Too many lobbies open, disconnecting';
const STR_ALREADY_IN_LOBBY = 'Already in a lobby';
const STR_LOBBY_DOES_NOT_EXISTS = 'Lobby does not exists';
const STR_LOBBY_IS_SEALED = 'Lobby is sealed';
const STR_INVALID_FORMAT = 'Invalid message format';
const STR_NEED_LOBBY = 'Invalid message when not in a lobby';
const STR_SERVER_ERROR = 'Server error, lobby not found';
const STR_INVALID_DEST = 'Invalid destination';
const STR_INVALID_CMD = 'Invalid command';
const STR_TOO_MANY_PEERS = 'Too many peers connected';
const STR_INVALID_TRANSFER_MODE = 'Invalid transfer mode, must be text';
const CMD = {
JOIN: 0, // eslint-disable-line sort-keys
ID: 1, // eslint-disable-line sort-keys
PEER_CONNECT: 2, // eslint-disable-line sort-keys
PEER_DISCONNECT: 3, // eslint-disable-line sort-keys
OFFER: 4, // eslint-disable-line sort-keys
ANSWER: 5, // eslint-disable-line sort-keys
CANDIDATE: 6, // eslint-disable-line sort-keys
SEAL: 7, // eslint-disable-line sort-keys
};
function randomInt(low, high) {
return Math.floor(Math.random() * (high - low + 1) + low);
}
function randomId() {
return Math.abs(new Int32Array(crypto.randomBytes(4).buffer)[0]);
}
function randomSecret() {
let out = '';
for (let i = 0; i < 16; i++) {
out += ALFNUM[randomInt(0, ALFNUM.length - 1)];
}
return out;
}
function ProtoMessage(type, id, data) {
return JSON.stringify({
'type': type,
'id': id,
'data': data || '',
});
}
const wss = new WebSocket.Server({ port: PORT });
class ProtoError extends Error {
constructor(code, message) {
super(message);
this.code = code;
}
}
class Peer {
constructor(id, ws) {
this.id = id;
this.ws = ws;
this.lobby = '';
// Close connection after 1 sec if client has not joined a lobby
this.timeout = setTimeout(() => {
if (!this.lobby) {
ws.close(4000, STR_NO_LOBBY);
}
}, NO_LOBBY_TIMEOUT);
}
}
class Lobby {
constructor(name, host, mesh, single_host) {
this.name = name;
this.host = host;
this.mesh = mesh;
this.single_host = single_host;
this.peers = [];
this.sealed = false;
this.closeTimer = -1;
}
getPeerId(peer) {
return peer.id;
}
join(peer) {
const assigned = this.getPeerId(peer);
peer.ws.send(ProtoMessage(CMD.ID, assigned, this.mesh ? 'true' : ''));
this.peers.forEach((p) => {
p.ws.send(ProtoMessage(CMD.PEER_CONNECT, assigned));
peer.ws.send(ProtoMessage(CMD.PEER_CONNECT, this.getPeerId(p)));
});
this.peers.push(peer);
}
leave(peer) {
const idx = this.peers.findIndex((p) => peer === p);
if (idx === -1) {
return false;
}
if (this.peers.length>1 && !this.single_host) {
this.host=this.getPeerId(this.peers[1])
}
const assigned = this.getPeerId(peer);
const close = assigned === this.host;
this.peers.forEach((p) => {
if (close) { // Room host disconnected, must close.
p.ws.close(4000, STR_HOST_DISCONNECTED);
} else { // Notify peer disconnect.
p.ws.send(ProtoMessage(CMD.PEER_DISCONNECT, assigned));
}
});
this.peers.splice(idx, 1);
if (close && this.closeTimer >= 0) {
// We are closing already.
clearTimeout(this.closeTimer);
this.closeTimer = -1;
}
return close;
}
seal(peer) {
// Only host can seal
if (peer.id !== this.host) {
throw new ProtoError(4000, STR_ONLY_HOST_CAN_SEAL);
}
this.sealed = true;
this.peers.forEach((p) => {
p.ws.send(ProtoMessage(CMD.SEAL, 0));
});
console.log(`Peer ${peer.id} sealed lobby ${this.name} `
+ `with ${this.peers.length} peers`);
this.closeTimer = setTimeout(() => {
// Close peer connection to host (and thus the lobby)
this.peers.forEach((p) => {
p.ws.close(1000, STR_SEAL_COMPLETE);
});
}, SEAL_CLOSE_TIMEOUT);
}
}
const lobbies = new Map();
let peersCount = 0;
function joinLobby(peer, pLobby, mesh, single_host) {
let lobbyName = pLobby;
if (lobbyName === '') {
if (lobbies.size >= MAX_LOBBIES) {
throw new ProtoError(4000, STR_TOO_MANY_LOBBIES);
}
// Peer must not already be in a lobby
if (peer.lobby !== '') {
throw new ProtoError(4000, STR_ALREADY_IN_LOBBY);
}
lobbyName = randomSecret();
lobbies.set(lobbyName, new Lobby(lobbyName, peer.id, mesh, single_host));
console.log(`Peer ${peer.id} created lobby ${lobbyName}`);
console.log(`Open lobbies: ${lobbies.size}`);
}
const lobby = lobbies.get(lobbyName);
if (!lobby) {
throw new ProtoError(4000, STR_LOBBY_DOES_NOT_EXISTS);
}
if (lobby.sealed) {
throw new ProtoError(4000, STR_LOBBY_IS_SEALED);
}
peer.lobby = lobbyName;
console.log(`Peer ${peer.id} joining lobby ${lobbyName} `
+ `with ${lobby.peers.length} peers`);
lobby.join(peer);
peer.ws.send(ProtoMessage(CMD.JOIN, 0, lobbyName));
}
function parseMsg(peer, msg) {
let json = null;
try {
json = JSON.parse(msg);
} catch (e) {
throw new ProtoError(4000, STR_INVALID_FORMAT);
}
const type = typeof (json['type']) === 'number' ? Math.floor(json['type']) : -1;
const id = typeof (json['id']) === 'number' ? Math.floor(json['id']) : -1;
const data = typeof (json['data']) === 'string' ? json['data'] : '';
if (type < 0 || id < 0) {
throw new ProtoError(4000, STR_INVALID_FORMAT);
}
// Lobby joining.
if (type === CMD.JOIN) {
const dt = JSON.parse(data);
joinLobby(peer, dt['lobby'], id === 0, dt['single_host']);
return;
}
if (!peer.lobby) {
throw new ProtoError(4000, STR_NEED_LOBBY);
}
const lobby = lobbies.get(peer.lobby);
if (!lobby) {
throw new ProtoError(4000, STR_SERVER_ERROR);
}
// Lobby sealing.
if (type === CMD.SEAL) {
lobby.seal(peer);
return;
}
// Message relaying format:
//
// {
// "type": CMD.[OFFER|ANSWER|CANDIDATE],
// "id": DEST_ID,
// "data": PAYLOAD
// }
if (type === CMD.OFFER || type === CMD.ANSWER || type === CMD.CANDIDATE) {
let destId = id;
if (id === 1) {
destId = lobby.host;
}
const dest = lobby.peers.find((e) => e.id === destId);
// Dest is not in this room.
if (!dest) {
throw new ProtoError(4000, STR_INVALID_DEST);
}
dest.ws.send(ProtoMessage(type, lobby.getPeerId(peer), data));
return;
}
throw new ProtoError(4000, STR_INVALID_CMD);
}
wss.on('connection', (ws) => {
if (peersCount >= MAX_PEERS) {
ws.close(4000, STR_TOO_MANY_PEERS);
return;
}
peersCount++;
const id = randomId();
const peer = new Peer(id, ws);
ws.on('message', (message) => {
if (typeof message !== 'string') {
ws.close(4000, STR_INVALID_TRANSFER_MODE);
return;
}
try {
parseMsg(peer, message);
} catch (e) {
const code = e.code || 4000;
console.log(`Error parsing message from ${id}:\n${
message}`);
ws.close(code, e.message);
}
});
ws.on('close', (code, reason) => {
peersCount--;
console.log(`Connection with peer ${peer.id} closed `
+ `with reason ${code}: ${reason}`);
if (peer.lobby && lobbies.has(peer.lobby)
&& lobbies.get(peer.lobby).leave(peer)) {
lobbies.delete(peer.lobby);
console.log(`Deleted lobby ${peer.lobby}`);
console.log(`Open lobbies: ${lobbies.size}`);
peer.lobby = '';
}
if (peer.timeout >= 0) {
clearTimeout(peer.timeout);
peer.timeout = -1;
}
});
ws.on('error', (error) => {
console.error(error);
});
});
const interval = setInterval(() => { // eslint-disable-line no-unused-vars
wss.clients.forEach((ws) => {
ws.ping();
});
}, PING_INTERVAL);

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const WebSocket = require('ws');
const crypto = require('crypto');
const MAX_PEERS = 4096;
const MAX_LOBBIES = 1024;
const PORT = 9080;
const ALFNUM = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
const NO_LOBBY_TIMEOUT = 1000;
const SEAL_CLOSE_TIMEOUT = 10000;
const PING_INTERVAL = 10000;
const STR_NO_LOBBY = 'Have not joined lobby yet';
const STR_HOST_DISCONNECTED = 'Room host has disconnected';
const STR_ONLY_HOST_CAN_SEAL = 'Only host can seal the lobby';
const STR_SEAL_COMPLETE = 'Seal complete';
const STR_TOO_MANY_LOBBIES = 'Too many lobbies open, disconnecting';
const STR_ALREADY_IN_LOBBY = 'Already in a lobby';
const STR_LOBBY_DOES_NOT_EXISTS = 'Lobby does not exists';
const STR_LOBBY_IS_SEALED = 'Lobby is sealed';
const STR_INVALID_FORMAT = 'Invalid message format';
const STR_NEED_LOBBY = 'Invalid message when not in a lobby';
const STR_SERVER_ERROR = 'Server error, lobby not found';
const STR_INVALID_DEST = 'Invalid destination';
const STR_INVALID_CMD = 'Invalid command';
const STR_TOO_MANY_PEERS = 'Too many peers connected';
const STR_INVALID_TRANSFER_MODE = 'Invalid transfer mode, must be text';
const CMD = {
JOIN: 0, // eslint-disable-line sort-keys
ID: 1, // eslint-disable-line sort-keys
PEER_CONNECT: 2, // eslint-disable-line sort-keys
PEER_DISCONNECT: 3, // eslint-disable-line sort-keys
OFFER: 4, // eslint-disable-line sort-keys
ANSWER: 5, // eslint-disable-line sort-keys
CANDIDATE: 6, // eslint-disable-line sort-keys
SEAL: 7, // eslint-disable-line sort-keys
};
function randomInt(low, high) {
return Math.floor(Math.random() * (high - low + 1) + low);
}
function randomId() {
return Math.abs(new Int32Array(crypto.randomBytes(4).buffer)[0]);
}
function randomSecret() {
let out = '';
for (let i = 0; i < 16; i++) {
out += ALFNUM[randomInt(0, ALFNUM.length - 1)];
}
return out;
}
function ProtoMessage(type, id, data) {
return JSON.stringify({
'type': type,
'id': id,
'data': data || '',
});
}
const wss = new WebSocket.Server({ port: PORT });
class ProtoError extends Error {
constructor(code, message) {
super(message);
this.code = code;
}
}
class Peer {
constructor(id, ws) {
this.id = id;
this.ws = ws;
this.lobby = '';
// Close connection after 1 sec if client has not joined a lobby
this.timeout = setTimeout(() => {
if (!this.lobby) {
ws.close(4000, STR_NO_LOBBY);
}
}, NO_LOBBY_TIMEOUT);
}
}
class Lobby {
constructor(name, host, mesh) {
this.name = name;
this.host = host;
this.mesh = mesh;
this.peers = [];
this.sealed = false;
this.closeTimer = -1;
}
getPeerId(peer) {
if (this.host === peer.id) {
return 1;
}
return peer.id;
}
join(peer) {
const assigned = this.getPeerId(peer);
peer.ws.send(ProtoMessage(CMD.ID, assigned, this.mesh ? 'true' : ''));
this.peers.forEach((p) => {
p.ws.send(ProtoMessage(CMD.PEER_CONNECT, assigned));
peer.ws.send(ProtoMessage(CMD.PEER_CONNECT, this.getPeerId(p)));
});
this.peers.push(peer);
}
leave(peer) {
const idx = this.peers.findIndex((p) => peer === p);
if (idx === -1) {
return false;
}
const assigned = this.getPeerId(peer);
const close = assigned === 1;
this.peers.forEach((p) => {
if (close) { // Room host disconnected, must close.
p.ws.close(4000, STR_HOST_DISCONNECTED);
} else { // Notify peer disconnect.
p.ws.send(ProtoMessage(CMD.PEER_DISCONNECT, assigned));
}
});
this.peers.splice(idx, 1);
if (close && this.closeTimer >= 0) {
// We are closing already.
clearTimeout(this.closeTimer);
this.closeTimer = -1;
}
return close;
}
seal(peer) {
// Only host can seal
if (peer.id !== this.host) {
throw new ProtoError(4000, STR_ONLY_HOST_CAN_SEAL);
}
this.sealed = true;
this.peers.forEach((p) => {
p.ws.send(ProtoMessage(CMD.SEAL, 0));
});
console.log(`Peer ${peer.id} sealed lobby ${this.name} `
+ `with ${this.peers.length} peers`);
this.closeTimer = setTimeout(() => {
// Close peer connection to host (and thus the lobby)
this.peers.forEach((p) => {
p.ws.close(1000, STR_SEAL_COMPLETE);
});
}, SEAL_CLOSE_TIMEOUT);
}
}
const lobbies = new Map();
let peersCount = 0;
function joinLobby(peer, pLobby, mesh) {
let lobbyName = pLobby;
if (lobbyName === '') {
if (lobbies.size >= MAX_LOBBIES) {
throw new ProtoError(4000, STR_TOO_MANY_LOBBIES);
}
// Peer must not already be in a lobby
if (peer.lobby !== '') {
throw new ProtoError(4000, STR_ALREADY_IN_LOBBY);
}
lobbyName = randomSecret();
lobbies.set(lobbyName, new Lobby(lobbyName, peer.id, mesh));
console.log(`Peer ${peer.id} created lobby ${lobbyName}`);
console.log(`Open lobbies: ${lobbies.size}`);
}
const lobby = lobbies.get(lobbyName);
if (!lobby) {
throw new ProtoError(4000, STR_LOBBY_DOES_NOT_EXISTS);
}
if (lobby.sealed) {
throw new ProtoError(4000, STR_LOBBY_IS_SEALED);
}
peer.lobby = lobbyName;
console.log(`Peer ${peer.id} joining lobby ${lobbyName} `
+ `with ${lobby.peers.length} peers`);
lobby.join(peer);
peer.ws.send(ProtoMessage(CMD.JOIN, 0, lobbyName));
}
function parseMsg(peer, msg) {
let json = null;
try {
json = JSON.parse(msg);
} catch (e) {
throw new ProtoError(4000, STR_INVALID_FORMAT);
}
const type = typeof (json['type']) === 'number' ? Math.floor(json['type']) : -1;
const id = typeof (json['id']) === 'number' ? Math.floor(json['id']) : -1;
const data = typeof (json['data']) === 'string' ? json['data'] : '';
if (type < 0 || id < 0) {
throw new ProtoError(4000, STR_INVALID_FORMAT);
}
// Lobby joining.
if (type === CMD.JOIN) {
joinLobby(peer, data, id === 0);
return;
}
if (!peer.lobby) {
throw new ProtoError(4000, STR_NEED_LOBBY);
}
const lobby = lobbies.get(peer.lobby);
if (!lobby) {
throw new ProtoError(4000, STR_SERVER_ERROR);
}
// Lobby sealing.
if (type === CMD.SEAL) {
lobby.seal(peer);
return;
}
// Message relaying format:
//
// {
// "type": CMD.[OFFER|ANSWER|CANDIDATE],
// "id": DEST_ID,
// "data": PAYLOAD
// }
if (type === CMD.OFFER || type === CMD.ANSWER || type === CMD.CANDIDATE) {
let destId = id;
if (id === 1) {
destId = lobby.host;
}
const dest = lobby.peers.find((e) => e.id === destId);
// Dest is not in this room.
if (!dest) {
throw new ProtoError(4000, STR_INVALID_DEST);
}
dest.ws.send(ProtoMessage(type, lobby.getPeerId(peer), data));
return;
}
throw new ProtoError(4000, STR_INVALID_CMD);
}
wss.on('connection', (ws) => {
if (peersCount >= MAX_PEERS) {
ws.close(4000, STR_TOO_MANY_PEERS);
return;
}
peersCount++;
const id = randomId();
const peer = new Peer(id, ws);
ws.on('message', (message) => {
if (typeof message !== 'string') {
ws.close(4000, STR_INVALID_TRANSFER_MODE);
return;
}
try {
parseMsg(peer, message);
} catch (e) {
const code = e.code || 4000;
console.log(`Error parsing message from ${id}:\n${
message}`);
ws.close(code, e.message);
}
});
ws.on('close', (code, reason) => {
peersCount--;
console.log(`Connection with peer ${peer.id} closed `
+ `with reason ${code}: ${reason}`);
if (peer.lobby && lobbies.has(peer.lobby)
&& lobbies.get(peer.lobby).leave(peer)) {
lobbies.delete(peer.lobby);
console.log(`Deleted lobby ${peer.lobby}`);
console.log(`Open lobbies: ${lobbies.size}`);
peer.lobby = '';
}
if (peer.timeout >= 0) {
clearTimeout(peer.timeout);
peer.timeout = -1;
}
});
ws.on('error', (error) => {
console.error(error);
});
});
const interval = setInterval(() => { // eslint-disable-line no-unused-vars
wss.clients.forEach((ws) => {
ws.ping();
});
}, PING_INTERVAL);

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webrtc/LICENSE.json Normal file
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MIT License
Copyright (c) 2013-2022 Niels Lohmann
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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Mozilla Public License Version 2.0
==================================
1. Definitions
--------------
1.1. "Contributor"
means each individual or legal entity that creates, contributes to
the creation of, or owns Covered Software.
1.2. "Contributor Version"
means the combination of the Contributions of others (if any) used
by a Contributor and that particular Contributor's Contribution.
1.3. "Contribution"
means Covered Software of a particular Contributor.
1.4. "Covered Software"
means Source Code Form to which the initial Contributor has attached
the notice in Exhibit A, the Executable Form of such Source Code
Form, and Modifications of such Source Code Form, in each case
including portions thereof.
1.5. "Incompatible With Secondary Licenses"
means
(a) that the initial Contributor has attached the notice described
in Exhibit B to the Covered Software; or
(b) that the Covered Software was made available under the terms of
version 1.1 or earlier of the License, but not also under the
terms of a Secondary License.
1.6. "Executable Form"
means any form of the work other than Source Code Form.
1.7. "Larger Work"
means a work that combines Covered Software with other material, in
a separate file or files, that is not Covered Software.
1.8. "License"
means this document.
1.9. "Licensable"
means having the right to grant, to the maximum extent possible,
whether at the time of the initial grant or subsequently, any and
all of the rights conveyed by this License.
1.10. "Modifications"
means any of the following:
(a) any file in Source Code Form that results from an addition to,
deletion from, or modification of the contents of Covered
Software; or
(b) any new file in Source Code Form that contains any Covered
Software.
1.11. "Patent Claims" of a Contributor
means any patent claim(s), including without limitation, method,
process, and apparatus claims, in any patent Licensable by such
Contributor that would be infringed, but for the grant of the
License, by the making, using, selling, offering for sale, having
made, import, or transfer of either its Contributions or its
Contributor Version.
1.12. "Secondary License"
means either the GNU General Public License, Version 2.0, the GNU
Lesser General Public License, Version 2.1, the GNU Affero General
Public License, Version 3.0, or any later versions of those
licenses.
1.13. "Source Code Form"
means the form of the work preferred for making modifications.
1.14. "You" (or "Your")
means an individual or a legal entity exercising rights under this
License. For legal entities, "You" includes any entity that
controls, is controlled by, or is under common control with You. For
purposes of this definition, "control" means (a) the power, direct
or indirect, to cause the direction or management of such entity,
whether by contract or otherwise, or (b) ownership of more than
fifty percent (50%) of the outstanding shares or beneficial
ownership of such entity.
2. License Grants and Conditions
--------------------------------
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
(a) under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or
as part of a Larger Work; and
(b) under Patent Claims of such Contributor to make, use, sell, offer
for sale, have made, import, and otherwise transfer either its
Contributions or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution
become effective for each Contribution on the date the Contributor first
distributes such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under
this License. No additional rights or licenses will be implied from the
distribution or licensing of Covered Software under this License.
Notwithstanding Section 2.1(b) above, no patent license is granted by a
Contributor:
(a) for any code that a Contributor has removed from Covered Software;
or
(b) for infringements caused by: (i) Your and any other third party's
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
(c) under Patent Claims infringed by Covered Software in the absence of
its Contributions.
This License does not grant any rights in the trademarks, service marks,
or logos of any Contributor (except as may be necessary to comply with
the notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this
License (see Section 10.2) or under the terms of a Secondary License (if
permitted under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its
Contributions are its original creation(s) or it has sufficient rights
to grant the rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under
applicable copyright doctrines of fair use, fair dealing, or other
equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
in Section 2.1.
3. Responsibilities
-------------------
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under
the terms of this License. You must inform recipients that the Source
Code Form of the Covered Software is governed by the terms of this
License, and how they can obtain a copy of this License. You may not
attempt to alter or restrict the recipients' rights in the Source Code
Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
(a) such Covered Software must also be made available in Source Code
Form, as described in Section 3.1, and You must inform recipients of
the Executable Form how they can obtain a copy of such Source Code
Form by reasonable means in a timely manner, at a charge no more
than the cost of distribution to the recipient; and
(b) You may distribute such Executable Form under the terms of this
License, or sublicense it under different terms, provided that the
license for the Executable Form does not attempt to limit or alter
the recipients' rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for
the Covered Software. If the Larger Work is a combination of Covered
Software with a work governed by one or more Secondary Licenses, and the
Covered Software is not Incompatible With Secondary Licenses, this
License permits You to additionally distribute such Covered Software
under the terms of such Secondary License(s), so that the recipient of
the Larger Work may, at their option, further distribute the Covered
Software under the terms of either this License or such Secondary
License(s).
3.4. Notices
You may not remove or alter the substance of any license notices
(including copyright notices, patent notices, disclaimers of warranty,
or limitations of liability) contained within the Source Code Form of
the Covered Software, except that You may alter any license notices to
the extent required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on
behalf of any Contributor. You must make it absolutely clear that any
such warranty, support, indemnity, or liability obligation is offered by
You alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
---------------------------------------------------
If it is impossible for You to comply with any of the terms of this
License with respect to some or all of the Covered Software due to
statute, judicial order, or regulation then You must: (a) comply with
the terms of this License to the maximum extent possible; and (b)
describe the limitations and the code they affect. Such description must
be placed in a text file included with all distributions of the Covered
Software under this License. Except to the extent prohibited by statute
or regulation, such description must be sufficiently detailed for a
recipient of ordinary skill to be able to understand it.
5. Termination
--------------
5.1. The rights granted under this License will terminate automatically
if You fail to comply with any of its terms. However, if You become
compliant, then the rights granted under this License from a particular
Contributor are reinstated (a) provisionally, unless and until such
Contributor explicitly and finally terminates Your grants, and (b) on an
ongoing basis, if such Contributor fails to notify You of the
non-compliance by some reasonable means prior to 60 days after You have
come back into compliance. Moreover, Your grants from a particular
Contributor are reinstated on an ongoing basis if such Contributor
notifies You of the non-compliance by some reasonable means, this is the
first time You have received notice of non-compliance with this License
from such Contributor, and You become compliant prior to 30 days after
Your receipt of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions,
counter-claims, and cross-claims) alleging that a Contributor Version
directly or indirectly infringes any patent, then the rights granted to
You by any and all Contributors for the Covered Software under Section
2.1 of this License shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all
end user license agreements (excluding distributors and resellers) which
have been validly granted by You or Your distributors under this License
prior to termination shall survive termination.
************************************************************************
* *
* 6. Disclaimer of Warranty *
* ------------------------- *
* *
* Covered Software is provided under this License on an "as is" *
* basis, without warranty of any kind, either expressed, implied, or *
* statutory, including, without limitation, warranties that the *
* Covered Software is free of defects, merchantable, fit for a *
* particular purpose or non-infringing. The entire risk as to the *
* quality and performance of the Covered Software is with You. *
* Should any Covered Software prove defective in any respect, You *
* (not any Contributor) assume the cost of any necessary servicing, *
* repair, or correction. This disclaimer of warranty constitutes an *
* essential part of this License. No use of any Covered Software is *
* authorized under this License except under this disclaimer. *
* *
************************************************************************
************************************************************************
* *
* 7. Limitation of Liability *
* -------------------------- *
* *
* Under no circumstances and under no legal theory, whether tort *
* (including negligence), contract, or otherwise, shall any *
* Contributor, or anyone who distributes Covered Software as *
* permitted above, be liable to You for any direct, indirect, *
* special, incidental, or consequential damages of any character *
* including, without limitation, damages for lost profits, loss of *
* goodwill, work stoppage, computer failure or malfunction, or any *
* and all other commercial damages or losses, even if such party *
* shall have been informed of the possibility of such damages. This *
* limitation of liability shall not apply to liability for death or *
* personal injury resulting from such party's negligence to the *
* extent applicable law prohibits such limitation. Some *
* jurisdictions do not allow the exclusion or limitation of *
* incidental or consequential damages, so this exclusion and *
* limitation may not apply to You. *
* *
************************************************************************
8. Litigation
-------------
Any litigation relating to this License may be brought only in the
courts of a jurisdiction where the defendant maintains its principal
place of business and such litigation shall be governed by laws of that
jurisdiction, without reference to its conflict-of-law provisions.
Nothing in this Section shall prevent a party's ability to bring
cross-claims or counter-claims.
9. Miscellaneous
----------------
This License represents the complete agreement concerning the subject
matter hereof. If any provision of this License is held to be
unenforceable, such provision shall be reformed only to the extent
necessary to make it enforceable. Any law or regulation which provides
that the language of a contract shall be construed against the drafter
shall not be used to construe this License against a Contributor.
10. Versions of the License
---------------------------
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version
of the License under which You originally received the Covered Software,
or under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a
modified version of this License if you rename the license and remove
any references to the name of the license steward (except to note that
such modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary
Licenses
If You choose to distribute Source Code Form that is Incompatible With
Secondary Licenses under the terms of this version of the License, the
notice described in Exhibit B of this License must be attached.
Exhibit A - Source Code Form License Notice
-------------------------------------------
This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular
file, then You may include the notice in a location (such as a LICENSE
file in a relevant directory) where a recipient would be likely to look
for such a notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - "Incompatible With Secondary Licenses" Notice
---------------------------------------------------------
This Source Code Form is "Incompatible With Secondary Licenses", as
defined by the Mozilla Public License, v. 2.0.

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Mozilla Public License Version 2.0
==================================
1. Definitions
--------------
1.1. "Contributor"
means each individual or legal entity that creates, contributes to
the creation of, or owns Covered Software.
1.2. "Contributor Version"
means the combination of the Contributions of others (if any) used
by a Contributor and that particular Contributor's Contribution.
1.3. "Contribution"
means Covered Software of a particular Contributor.
1.4. "Covered Software"
means Source Code Form to which the initial Contributor has attached
the notice in Exhibit A, the Executable Form of such Source Code
Form, and Modifications of such Source Code Form, in each case
including portions thereof.
1.5. "Incompatible With Secondary Licenses"
means
(a) that the initial Contributor has attached the notice described
in Exhibit B to the Covered Software; or
(b) that the Covered Software was made available under the terms of
version 1.1 or earlier of the License, but not also under the
terms of a Secondary License.
1.6. "Executable Form"
means any form of the work other than Source Code Form.
1.7. "Larger Work"
means a work that combines Covered Software with other material, in
a separate file or files, that is not Covered Software.
1.8. "License"
means this document.
1.9. "Licensable"
means having the right to grant, to the maximum extent possible,
whether at the time of the initial grant or subsequently, any and
all of the rights conveyed by this License.
1.10. "Modifications"
means any of the following:
(a) any file in Source Code Form that results from an addition to,
deletion from, or modification of the contents of Covered
Software; or
(b) any new file in Source Code Form that contains any Covered
Software.
1.11. "Patent Claims" of a Contributor
means any patent claim(s), including without limitation, method,
process, and apparatus claims, in any patent Licensable by such
Contributor that would be infringed, but for the grant of the
License, by the making, using, selling, offering for sale, having
made, import, or transfer of either its Contributions or its
Contributor Version.
1.12. "Secondary License"
means either the GNU General Public License, Version 2.0, the GNU
Lesser General Public License, Version 2.1, the GNU Affero General
Public License, Version 3.0, or any later versions of those
licenses.
1.13. "Source Code Form"
means the form of the work preferred for making modifications.
1.14. "You" (or "Your")
means an individual or a legal entity exercising rights under this
License. For legal entities, "You" includes any entity that
controls, is controlled by, or is under common control with You. For
purposes of this definition, "control" means (a) the power, direct
or indirect, to cause the direction or management of such entity,
whether by contract or otherwise, or (b) ownership of more than
fifty percent (50%) of the outstanding shares or beneficial
ownership of such entity.
2. License Grants and Conditions
--------------------------------
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
(a) under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or
as part of a Larger Work; and
(b) under Patent Claims of such Contributor to make, use, sell, offer
for sale, have made, import, and otherwise transfer either its
Contributions or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution
become effective for each Contribution on the date the Contributor first
distributes such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under
this License. No additional rights or licenses will be implied from the
distribution or licensing of Covered Software under this License.
Notwithstanding Section 2.1(b) above, no patent license is granted by a
Contributor:
(a) for any code that a Contributor has removed from Covered Software;
or
(b) for infringements caused by: (i) Your and any other third party's
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
(c) under Patent Claims infringed by Covered Software in the absence of
its Contributions.
This License does not grant any rights in the trademarks, service marks,
or logos of any Contributor (except as may be necessary to comply with
the notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this
License (see Section 10.2) or under the terms of a Secondary License (if
permitted under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its
Contributions are its original creation(s) or it has sufficient rights
to grant the rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under
applicable copyright doctrines of fair use, fair dealing, or other
equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
in Section 2.1.
3. Responsibilities
-------------------
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under
the terms of this License. You must inform recipients that the Source
Code Form of the Covered Software is governed by the terms of this
License, and how they can obtain a copy of this License. You may not
attempt to alter or restrict the recipients' rights in the Source Code
Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
(a) such Covered Software must also be made available in Source Code
Form, as described in Section 3.1, and You must inform recipients of
the Executable Form how they can obtain a copy of such Source Code
Form by reasonable means in a timely manner, at a charge no more
than the cost of distribution to the recipient; and
(b) You may distribute such Executable Form under the terms of this
License, or sublicense it under different terms, provided that the
license for the Executable Form does not attempt to limit or alter
the recipients' rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for
the Covered Software. If the Larger Work is a combination of Covered
Software with a work governed by one or more Secondary Licenses, and the
Covered Software is not Incompatible With Secondary Licenses, this
License permits You to additionally distribute such Covered Software
under the terms of such Secondary License(s), so that the recipient of
the Larger Work may, at their option, further distribute the Covered
Software under the terms of either this License or such Secondary
License(s).
3.4. Notices
You may not remove or alter the substance of any license notices
(including copyright notices, patent notices, disclaimers of warranty,
or limitations of liability) contained within the Source Code Form of
the Covered Software, except that You may alter any license notices to
the extent required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on
behalf of any Contributor. You must make it absolutely clear that any
such warranty, support, indemnity, or liability obligation is offered by
You alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
---------------------------------------------------
If it is impossible for You to comply with any of the terms of this
License with respect to some or all of the Covered Software due to
statute, judicial order, or regulation then You must: (a) comply with
the terms of this License to the maximum extent possible; and (b)
describe the limitations and the code they affect. Such description must
be placed in a text file included with all distributions of the Covered
Software under this License. Except to the extent prohibited by statute
or regulation, such description must be sufficiently detailed for a
recipient of ordinary skill to be able to understand it.
5. Termination
--------------
5.1. The rights granted under this License will terminate automatically
if You fail to comply with any of its terms. However, if You become
compliant, then the rights granted under this License from a particular
Contributor are reinstated (a) provisionally, unless and until such
Contributor explicitly and finally terminates Your grants, and (b) on an
ongoing basis, if such Contributor fails to notify You of the
non-compliance by some reasonable means prior to 60 days after You have
come back into compliance. Moreover, Your grants from a particular
Contributor are reinstated on an ongoing basis if such Contributor
notifies You of the non-compliance by some reasonable means, this is the
first time You have received notice of non-compliance with this License
from such Contributor, and You become compliant prior to 30 days after
Your receipt of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions,
counter-claims, and cross-claims) alleging that a Contributor Version
directly or indirectly infringes any patent, then the rights granted to
You by any and all Contributors for the Covered Software under Section
2.1 of this License shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all
end user license agreements (excluding distributors and resellers) which
have been validly granted by You or Your distributors under this License
prior to termination shall survive termination.
************************************************************************
* *
* 6. Disclaimer of Warranty *
* ------------------------- *
* *
* Covered Software is provided under this License on an "as is" *
* basis, without warranty of any kind, either expressed, implied, or *
* statutory, including, without limitation, warranties that the *
* Covered Software is free of defects, merchantable, fit for a *
* particular purpose or non-infringing. The entire risk as to the *
* quality and performance of the Covered Software is with You. *
* Should any Covered Software prove defective in any respect, You *
* (not any Contributor) assume the cost of any necessary servicing, *
* repair, or correction. This disclaimer of warranty constitutes an *
* essential part of this License. No use of any Covered Software is *
* authorized under this License except under this disclaimer. *
* *
************************************************************************
************************************************************************
* *
* 7. Limitation of Liability *
* -------------------------- *
* *
* Under no circumstances and under no legal theory, whether tort *
* (including negligence), contract, or otherwise, shall any *
* Contributor, or anyone who distributes Covered Software as *
* permitted above, be liable to You for any direct, indirect, *
* special, incidental, or consequential damages of any character *
* including, without limitation, damages for lost profits, loss of *
* goodwill, work stoppage, computer failure or malfunction, or any *
* and all other commercial damages or losses, even if such party *
* shall have been informed of the possibility of such damages. This *
* limitation of liability shall not apply to liability for death or *
* personal injury resulting from such party's negligence to the *
* extent applicable law prohibits such limitation. Some *
* jurisdictions do not allow the exclusion or limitation of *
* incidental or consequential damages, so this exclusion and *
* limitation may not apply to You. *
* *
************************************************************************
8. Litigation
-------------
Any litigation relating to this License may be brought only in the
courts of a jurisdiction where the defendant maintains its principal
place of business and such litigation shall be governed by laws of that
jurisdiction, without reference to its conflict-of-law provisions.
Nothing in this Section shall prevent a party's ability to bring
cross-claims or counter-claims.
9. Miscellaneous
----------------
This License represents the complete agreement concerning the subject
matter hereof. If any provision of this License is held to be
unenforceable, such provision shall be reformed only to the extent
necessary to make it enforceable. Any law or regulation which provides
that the language of a contract shall be construed against the drafter
shall not be used to construe this License against a Contributor.
10. Versions of the License
---------------------------
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version
of the License under which You originally received the Covered Software,
or under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a
modified version of this License if you rename the license and remove
any references to the name of the license steward (except to note that
such modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary
Licenses
If You choose to distribute Source Code Form that is Incompatible With
Secondary Licenses under the terms of this version of the License, the
notice described in Exhibit B of this License must be attached.
Exhibit A - Source Code Form License Notice
-------------------------------------------
This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular
file, then You may include the notice in a location (such as a LICENSE
file in a relevant directory) where a recipient would be likely to look
for such a notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - "Incompatible With Secondary Licenses" Notice
---------------------------------------------------------
This Source Code Form is "Incompatible With Secondary Licenses", as
defined by the Mozilla Public License, v. 2.0.

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/*
*
* Copyright (c) 2001-2017 Cisco Systems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* Neither the name of the Cisco Systems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/

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Apache License
Version 2.0, January 2004
https://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
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END OF TERMS AND CONDITIONS

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webrtc/LICENSE.plog Normal file
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MIT License
Copyright (c) 2022 Sergey Podobry
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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webrtc/LICENSE.usrsctp Normal file
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Copyright (c) 2015, Randall Stewart and Michael Tuexen
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name of usrsctp nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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MIT License
Copyright (c) 2018 Godot Engine
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleExecutable</key>
<string>libwebrtc_native.macos.template_debug.universal.dylib</string>
<key>CFBundleIdentifier</key>
<string>org.godotengine.webrtc-native</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleDisplayName</key>
<string>libwebrtc_native.macos.template_debug.universal</string>
<key>CFBundleName</key>
<string>webrtc_native</string>
<key>CFBundlePackageType</key>
<string>FMWK</string>
<key>CFBundleShortVersionString</key>
<string>1.0.0</string>
<key>CFBundleSupportedPlatforms</key>
<array>
<string>MacOSX</string>
</array>
<key>CFBundleVersion</key>
<string>1.0.0</string>
<key>LSMinimumSystemVersion</key>
<string>11.0</string>
</dict>
</plist>

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleExecutable</key>
<string>libwebrtc_native.macos.template_release.universal.dylib</string>
<key>CFBundleIdentifier</key>
<string>org.godotengine.webrtc-native</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleDisplayName</key>
<string>libwebrtc_native.macos.template_release.universal</string>
<key>CFBundleName</key>
<string>webrtc_native</string>
<key>CFBundlePackageType</key>
<string>FMWK</string>
<key>CFBundleShortVersionString</key>
<string>1.0.0</string>
<key>CFBundleSupportedPlatforms</key>
<array>
<string>MacOSX</string>
</array>
<key>CFBundleVersion</key>
<string>1.0.0</string>
<key>LSMinimumSystemVersion</key>
<string>11.0</string>
</dict>
</plist>

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webrtc/webrtc.gdextension Normal file
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[configuration]
entry_symbol = "webrtc_extension_init"
compatibility_minimum = 4.1
[libraries]
linux.debug.x86_64 = "lib/libwebrtc_native.linux.template_debug.x86_64.so"
linux.debug.x86_32 = "lib/libwebrtc_native.linux.template_debug.x86_32.so"
linux.debug.arm64 = "lib/libwebrtc_native.linux.template_debug.arm64.so"
linux.debug.arm32 = "lib/libwebrtc_native.linux.template_debug.arm32.so"
macos.debug = "lib/libwebrtc_native.macos.template_debug.universal.framework"
windows.debug.x86_64 = "lib/libwebrtc_native.windows.template_debug.x86_64.dll"
windows.debug.x86_32 = "lib/libwebrtc_native.windows.template_debug.x86_32.dll"
android.debug.arm64 = "lib/libwebrtc_native.android.template_debug.arm64.so"
android.debug.x86_64 = "lib/libwebrtc_native.android.template_debug.x86_64.so"
ios.debug.arm64 = "lib/libwebrtc_native.ios.template_debug.arm64.dylib"
ios.debug.x86_64 = "lib/libwebrtc_native.ios.template_debug.x86_64.simulator.dylib"
linux.release.x86_64 = "lib/libwebrtc_native.linux.template_release.x86_64.so"
linux.release.x86_32 = "lib/libwebrtc_native.linux.template_release.x86_32.so"
linux.release.arm64 = "lib/libwebrtc_native.linux.template_release.arm64.so"
linux.release.arm32 = "lib/libwebrtc_native.linux.template_release.arm32.so"
macos.release = "lib/libwebrtc_native.macos.template_release.universal.framework"
windows.release.x86_64 = "lib/libwebrtc_native.windows.template_release.x86_64.dll"
windows.release.x86_32 = "lib/libwebrtc_native.windows.template_release.x86_32.dll"
android.release.arm64 = "lib/libwebrtc_native.android.template_release.arm64.so"
android.release.x86_64 = "lib/libwebrtc_native.android.template_release.x86_64.so"
ios.release.arm64 = "lib/libwebrtc_native.ios.template_release.arm64.dylib"
ios.release.x86_64 = "lib/libwebrtc_native.ios.template_release.x86_64.simulator.dylib"