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annotate libervia/pages/calls/_browser/__init__.py @ 1517:b8ed9726525b

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browser: "calls" implementation, first draft: Basic page to make a call. Call are automatically accepted for the moment. fix 422
author Goffi <goffi@goffi.org>
date Thu, 01 Jun 2023 21:42:02 +0200
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1517
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1 import json
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2 import re
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3
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4 from bridge import AsyncBridge as Bridge
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5 from browser import aio, console as log, document, timer, window
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6 import errors
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7 import loading
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8
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9 log.warning = log.warn
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10 profile = window.profile or ""
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11 bridge = Bridge()
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12 GATHER_TIMEOUT = 10000
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13
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14
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15 class WebRTCCall:
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16
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17 def __init__(self):
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18 self.reset_instance()
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19
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20 def reset_instance(self):
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21 """Inits or resets the instance variables to their default state."""
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22 self._peer_connection = None
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23 self._media_types = None
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24 self.sid = None
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25 self.local_candidates = None
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26 self.remote_stream = None
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27 self.candidates_buffer = {
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28 "audio": {"candidates": []},
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29 "video": {"candidates": []},
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30 }
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31 self.media_candidates = {}
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32 self.candidates_gathered = aio.Future()
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33
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34 @property
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35 def media_types(self):
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36 if self._media_types is None:
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37 raise Exception("self._media_types should not be None!")
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38 return self._media_types
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39
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40 def get_sdp_mline_index(self, media_type):
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41 """Gets the sdpMLineIndex for a given media type.
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42
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43 @param media_type: The type of the media.
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44 """
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45 for index, m_type in self.media_types.items():
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46 if m_type == media_type:
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47 return index
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48 raise ValueError(f"Media type '{media_type}' not found")
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49
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50 def extract_pwd_ufrag(self, sdp):
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51 """Retrieves ICE password and user fragment for SDP offer.
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52
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53 @param sdp: The Session Description Protocol offer string.
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54 """
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55 ufrag_line = re.search(r"ice-ufrag:(\S+)", sdp)
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56 pwd_line = re.search(r"ice-pwd:(\S+)", sdp)
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57
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58 if ufrag_line and pwd_line:
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59 return ufrag_line.group(1), pwd_line.group(1)
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60 else:
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61 log.error(f"SDP with missing ice-ufrag or ice-pwd:\n{sdp}")
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62 raise ValueError("Can't extract ice-ufrag and ice-pwd from SDP")
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63
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64 def extract_fingerprint_data(self, sdp):
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65 """Retrieves fingerprint data from an SDP offer.
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66
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67 @param sdp: The Session Description Protocol offer string.
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68 @return: A dictionary containing the fingerprint data.
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69 """
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70 fingerprint_line = re.search(r"a=fingerprint:(\S+)\s+(\S+)", sdp)
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71 if fingerprint_line:
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72 algorithm, fingerprint = fingerprint_line.groups()
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73 fingerprint_data = {
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74 "hash": algorithm,
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75 "fingerprint": fingerprint
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76 }
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77
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78 setup_line = re.search(r"a=setup:(\S+)", sdp)
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79 if setup_line:
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80 setup = setup_line.group(1)
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81 fingerprint_data["setup"] = setup
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82
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83 return fingerprint_data
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84 else:
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85 raise ValueError("fingerprint should not be missing")
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86
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87 def parse_ice_candidate(self, candidate_string):
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88 """Parses the ice candidate string.
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89
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90 @param candidate_string: The ice candidate string to be parsed.
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91 """
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92 pattern = re.compile(
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93 r"candidate:(?P<foundation>\S+) (?P<component_id>\d+) (?P<transport>\S+) "
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94 r"(?P<priority>\d+) (?P<address>\S+) (?P<port>\d+) typ "
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95 r"(?P<type>\S+)(?: raddr (?P<rel_addr>\S+) rport "
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96 r"(?P<rel_port>\d+))?(?: generation (?P<generation>\d+))?"
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97 )
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98 match = pattern.match(candidate_string)
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99 if match:
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100 candidate_dict = match.groupdict()
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101
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102 # Apply the correct types to the dictionary values
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103 candidate_dict["component_id"] = int(candidate_dict["component_id"])
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104 candidate_dict["priority"] = int(candidate_dict["priority"])
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105 candidate_dict["port"] = int(candidate_dict["port"])
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106
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107 if candidate_dict["rel_port"]:
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108 candidate_dict["rel_port"] = int(candidate_dict["rel_port"])
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109
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110 if candidate_dict["generation"]:
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111 candidate_dict["generation"] = candidate_dict["generation"]
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112
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113 # Remove None values
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114 return {k: v for k, v in candidate_dict.items() if v is not None}
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115 else:
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116 log.warning(f"can't parse candidate: {candidate_string!r}")
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117 return None
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118
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119 def build_ice_candidate(self, parsed_candidate):
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120 """Builds ICE candidate
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121
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122 @param parsed_candidate: Dictionary containing parsed ICE candidate
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123 """
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124 base_format = (
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125 "candidate:{foundation} {component_id} {transport} {priority} "
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126 "{address} {port} typ {type}"
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127 )
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128
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129 if ((parsed_candidate.get('rel_addr')
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130 and parsed_candidate.get('rel_port'))):
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131 base_format += " raddr {rel_addr} rport {rel_port}"
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132
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133 if parsed_candidate.get('generation'):
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134 base_format += " generation {generation}"
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135
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136 return base_format.format(**parsed_candidate)
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137
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138 def on_ice_candidate(self, event):
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139 """Handles ICE candidate event
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140
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141 @param event: Event containing the ICE candidate
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142 """
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143 log.debug(f"on ice candidate {event.candidate=}")
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144 if event.candidate and event.candidate.candidate:
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145 window.last_event = event
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146 parsed_candidate = self.parse_ice_candidate(event.candidate.candidate)
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147 if parsed_candidate is None:
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148 return
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149 try:
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150 media_type = self.media_types[event.candidate.sdpMLineIndex]
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151 except (TypeError, IndexError):
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152 log.error(
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153 f"Can't find media type.\n{event.candidate=}\n{self._media_types=}"
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154 )
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155 return
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156 self.media_candidates.setdefault(media_type, []).append(parsed_candidate)
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157 log.debug(f"ICE candidate [{media_type}]: {event.candidate.candidate}")
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158 else:
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159 log.debug("All ICE candidates gathered")
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160
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161 def _set_media_types(self, offer):
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162 """Sets media types from offer SDP
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163
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164 @param offer: RTC session description containing the offer
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165 """
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166 sdp_lines = offer.sdp.splitlines()
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167 media_types = {}
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168 mline_index = 0
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169
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170 for line in sdp_lines:
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171 if line.startswith("m="):
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172 media_types[mline_index] = line[2:line.find(" ")]
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173 mline_index += 1
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174
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175 self._media_types = media_types
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176
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177 def on_ice_gathering_state_change(self, event):
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178 """Handles ICE gathering state change
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179
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180 @param event: Event containing the ICE gathering state change
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181 """
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182 connection = event.target
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183 log.debug(f"on_ice_gathering_state_change {connection.iceGatheringState=}")
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184 if connection.iceGatheringState == "complete":
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185 log.info("ICE candidates gathering done")
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186 self.candidates_gathered.set_result(None)
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187
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188 async def _create_peer_connection(
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189 self,
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190 ):
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191 """Creates peer connection"""
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192 if self._peer_connection is not None:
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193 raise Exception("create_peer_connection can't be called twice!")
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194
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195 external_disco = json.loads(await bridge.external_disco_get(""))
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196 ice_servers = []
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197
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198 for server in external_disco:
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199 ice_server = {}
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200 if server["type"] == "stun":
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201 ice_server["urls"] = f"stun:{server['host']}:{server['port']}"
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202 elif server["type"] == "turn":
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203 ice_server["urls"] = (
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204 f"turn:{server['host']}:{server['port']}?transport={server['transport']}"
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205 )
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diff changeset
206 ice_server["username"] = server["username"]
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207 ice_server["credential"] = server["password"]
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208 ice_servers.append(ice_server)
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diff changeset
209
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210 rtc_configuration = {"iceServers": ice_servers}
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211
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212 peer_connection = window.RTCPeerConnection.new(rtc_configuration)
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213 peer_connection.addEventListener("track", self.on_track)
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214 peer_connection.addEventListener("negotiationneeded", self.on_negotiation_needed)
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215 peer_connection.addEventListener("icecandidate", self.on_ice_candidate)
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216 peer_connection.addEventListener("icegatheringstatechange", self.on_ice_gathering_state_change)
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217
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218 self._peer_connection = peer_connection
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diff changeset
219 window.pc = self._peer_connection
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diff changeset
220
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diff changeset
221 async def _get_user_media(
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222 self,
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223 audio: bool = True,
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224 video: bool = True
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225 ):
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diff changeset
226 """Gets user media
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227
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diff changeset
228 @param audio: True if an audio flux is required
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229 @param video: True if a video flux is required
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230 """
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231 media_constraints = {'audio': audio, 'video': video}
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diff changeset
232 local_stream = await window.navigator.mediaDevices.getUserMedia(media_constraints)
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diff changeset
233 document["local_video"].srcObject = local_stream
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diff changeset
234
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diff changeset
235 for track in local_stream.getTracks():
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diff changeset
236 self._peer_connection.addTrack(track)
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diff changeset
237
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diff changeset
238 async def _gather_ice_candidates(self, is_initiator: bool, remote_candidates=None):
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239 """Get ICE candidates and wait to have them all before returning them
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240
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diff changeset
241 @param is_initiator: Boolean indicating if the user is the initiator of the connection
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242 @param remote_candidates: Remote ICE candidates, if any
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243 """
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244 if self._peer_connection is None:
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diff changeset
245 raise Exception("The peer connection must be created before gathering ICE candidates!")
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246
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diff changeset
247 self.media_candidates.clear()
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diff changeset
248 gather_timeout = timer.set_timeout(
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diff changeset
249 lambda: self.candidates_gathered.set_exception(
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diff changeset
250 errors.TimeoutError("ICE gathering time out")
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diff changeset
251 ),
b8ed9726525b browser: "calls" implementation, first draft:
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diff changeset
252 GATHER_TIMEOUT
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253 )
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parents:
diff changeset
254
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diff changeset
255 if is_initiator:
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diff changeset
256 offer = await self._peer_connection.createOffer()
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257 self._set_media_types(offer)
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diff changeset
258 await self._peer_connection.setLocalDescription(offer)
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diff changeset
259 else:
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260 answer = await self._peer_connection.createAnswer()
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261 self._set_media_types(answer)
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diff changeset
262 await self._peer_connection.setLocalDescription(answer)
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diff changeset
263
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diff changeset
264 if not is_initiator:
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diff changeset
265 log.debug(self._peer_connection.localDescription.sdp)
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diff changeset
266 await self.candidates_gathered
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267 log.debug(self._peer_connection.localDescription.sdp)
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268 timer.clear_timeout(gather_timeout)
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269 ufrag, pwd = self.extract_pwd_ufrag(self._peer_connection.localDescription.sdp)
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270 return {
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271 "ufrag": ufrag,
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272 "pwd": pwd,
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273 "candidates": self.media_candidates,
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274 }
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275
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276 def on_action_new(
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277 self, action_data_s: str, action_id: str, security_limit: int, profile: str
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278 ) -> None:
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279 """Called when a call is received
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280
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diff changeset
281 @param action_data_s: Action data serialized
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282 @param action_id: Unique identifier for the action
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283 @param security_limit: Security limit for the action
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diff changeset
284 @param profile: Profile associated with the action
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diff changeset
285 """
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diff changeset
286 action_data = json.loads(action_data_s)
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287 if action_data.get("type") != "call":
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288 return
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289 peer_jid = action_data["from_jid"]
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290 log.info(
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291 f"{peer_jid} wants to start a call ({action_data['sub_type']})"
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292 )
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293 if self.sid is not None:
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294 log.warning(
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295 f"already in a call ({self.sid}), can't receive a new call from "
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296 f"{peer_jid}"
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diff changeset
297 )
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298 return
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299 self.sid = action_data["session_id"]
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300 log.debug(f"Call SID: {self.sid}")
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301
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302 # Answer the call
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303 offer_sdp = action_data["sdp"]
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304 aio.run(self.answer_call(offer_sdp, action_id))
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305
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306 def _on_call_accepted(self, session_id: str, sdp: str, profile: str) -> None:
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307 """Called when we have received answer SDP from responder
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308
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309 @param session_id: Session identifier
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310 @param sdp: Session Description Protocol data
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311 @param profile: Profile associated with the action
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312 """
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313 aio.run(self.on_call_accepted(session_id, sdp, profile))
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314
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diff changeset
315 def _on_call_ended(self, session_id: str, data_s: str, profile: str) -> None:
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316 """Call has been terminated
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317
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diff changeset
318 @param session_id: Session identifier
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319 @param data_s: Serialised additional data on why the call has ended
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320 @param profile: Profile associated
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321 """
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322 if self.sid is None:
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323 log.debug("there are no calls in progress")
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diff changeset
324 return
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diff changeset
325 if session_id != self.sid:
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diff changeset
326 log.debug(
b8ed9726525b browser: "calls" implementation, first draft:
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diff changeset
327 f"ignoring call_ended not linked to our call ({self.sid}): {session_id}"
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diff changeset
328 )
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
329 return
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330 aio.run(self.end_call())
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parents:
diff changeset
331
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diff changeset
332 async def on_call_accepted(self, session_id: str, sdp: str, profile: str) -> None:
b8ed9726525b browser: "calls" implementation, first draft:
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333 """Call has been accepted, connection can be established
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
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334
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diff changeset
335 @param session_id: Session identifier
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parents:
diff changeset
336 @param sdp: Session Description Protocol data
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
337 @param profile: Profile associated
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
338 """
b8ed9726525b browser: "calls" implementation, first draft:
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diff changeset
339 if self.sid != session_id:
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
340 log.debug(
b8ed9726525b browser: "calls" implementation, first draft:
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diff changeset
341 f"Call ignored due to different session ID ({self.sid=} {session_id=})"
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parents:
diff changeset
342 )
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
343 return
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parents:
diff changeset
344 await self._peer_connection.setRemoteDescription({
b8ed9726525b browser: "calls" implementation, first draft:
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345 "type": "answer",
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
346 "sdp": sdp
b8ed9726525b browser: "calls" implementation, first draft:
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diff changeset
347 })
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diff changeset
348 await self.on_ice_candidates_new(self.candidates_buffer)
b8ed9726525b browser: "calls" implementation, first draft:
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diff changeset
349 self.candidates_buffer.clear()
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
350
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parents:
diff changeset
351 def _on_ice_candidates_new(self, sid: str, candidates_s: str, profile: str) -> None:
b8ed9726525b browser: "calls" implementation, first draft:
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diff changeset
352 """Called when new ICE candidates are received
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
353
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parents:
diff changeset
354 @param sid: Session identifier
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parents:
diff changeset
355 @param candidates_s: ICE candidates serialized
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
356 @param profile: Profile associated with the action
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parents:
diff changeset
357 """
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
358 if sid != self.sid:
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
359 log.debug(
b8ed9726525b browser: "calls" implementation, first draft:
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diff changeset
360 f"ignoring peer ice candidates for {sid=} ({self.sid=})."
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parents:
diff changeset
361 )
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
362 return
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
363 candidates = json.loads(candidates_s)
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parents:
diff changeset
364 aio.run(self.on_ice_candidates_new(candidates))
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parents:
diff changeset
365
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parents:
diff changeset
366 async def on_ice_candidates_new(self, candidates: dict) -> None:
b8ed9726525b browser: "calls" implementation, first draft:
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diff changeset
367 """Called when new ICE canidates are received from peer
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
368
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
369 @param candidates: Dictionary containing new ICE candidates
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
370 """
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
371 log.debug(f"new peer candidates received: {candidates}")
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
372 if (
b8ed9726525b browser: "calls" implementation, first draft:
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diff changeset
373 self._peer_connection is None
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
374 or self._peer_connection.remoteDescription is None
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
375 ):
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
376 for media_type in ("audio", "video"):
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
377 media_candidates = candidates.get(media_type)
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parents:
diff changeset
378 if media_candidates:
b8ed9726525b browser: "calls" implementation, first draft:
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diff changeset
379 buffer = self.candidates_buffer[media_type]
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
380 buffer["candidates"].extend(media_candidates["candidates"])
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
381 return
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parents:
diff changeset
382 for media_type, ice_data in candidates.items():
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
383 for candidate in ice_data["candidates"]:
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
384 candidate_sdp = self.build_ice_candidate(candidate)
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
385 try:
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
386 sdp_mline_index = self.get_sdp_mline_index(media_type)
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
387 except Exception as e:
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
388 log.warning(e)
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
389 continue
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
390 ice_candidate = window.RTCIceCandidate.new({
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
391 "candidate": candidate_sdp,
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
392 "sdpMLineIndex": sdp_mline_index
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
393 }
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
394 )
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
395 await self._peer_connection.addIceCandidate(ice_candidate)
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parents:
diff changeset
396
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
397 def on_track(self, event):
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
398 """New track has been received from peer
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
399
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
400 @param event: Event associated with the new track
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
401 """
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
402 if event.streams and event.streams[0]:
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
403 remote_stream = event.streams[0]
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
404 document["remote_video"].srcObject = remote_stream
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
405 else:
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
406 if self.remote_stream is None:
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
407 self.remote_stream = window.MediaStream.new()
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
408 document["remote_video"].srcObject = self.remote_stream
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
409 self.remote_stream.addTrack(event.track)
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
410
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
411 document["call_btn"].classList.add("is-hidden")
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
412 document["hangup_btn"].classList.remove("is-hidden")
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
413
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
414 def on_negotiation_needed(self, event) -> None:
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
415 log.debug(f"on_negotiation_needed {event=}")
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
416 # TODO
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
417
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
418 async def answer_call(self, offer_sdp: str, action_id: str):
b8ed9726525b browser: "calls" implementation, first draft:
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parents:
diff changeset
419 """We respond to the call"""
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
420 log.debug("answering call")
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
421 await self._create_peer_connection()
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
422
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
423 await self._peer_connection.setRemoteDescription({
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
424 "type": "offer",
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
425 "sdp": offer_sdp
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
426 })
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
427 await self.on_ice_candidates_new(self.candidates_buffer)
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
428 self.candidates_buffer.clear()
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
429 await self._get_user_media()
b8ed9726525b browser: "calls" implementation, first draft:
Goffi <goffi@goffi.org>
parents:
diff changeset
430
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431 # Gather local ICE candidates
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432 local_ice_data = await self._gather_ice_candidates(False)
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433 self.local_candidates = local_ice_data["candidates"]
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434
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435 await bridge.action_launch(
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436 action_id,
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437 json.dumps({
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438 "sdp": self._peer_connection.localDescription.sdp,
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439 })
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440 )
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441
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442 async def make_call(self, audio: bool = True, video: bool = True) -> None:
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443 """Start a WebRTC call
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444
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445 @param audio: True if an audio flux is required
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446 @param video: True if a video flux is required
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447 """
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448 await self._create_peer_connection()
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449 await self._get_user_media(audio, video)
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450 await self._gather_ice_candidates(True)
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451 callee_jid = document["callee_jid"].value
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452
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453 call_data = {
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454 "sdp": self._peer_connection.localDescription.sdp
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455 }
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456 log.info(f"calling {callee_jid!r}")
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457 self.sid = await bridge.call_start(
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458 callee_jid,
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459 json.dumps(call_data)
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460 )
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461 log.debug(f"Call SID: {self.sid}")
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462
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463 async def end_call(self) -> None:
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464 """Stop streaming and clean instance"""
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465 document["hangup_btn"].classList.add("is-hidden")
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466 document["call_btn"].classList.remove("is-hidden")
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467 if self._peer_connection is None:
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468 log.debug("There is currently no call to end.")
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469 else:
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470 self._peer_connection.removeEventListener("track", self.on_track)
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471 self._peer_connection.removeEventListener("negotiationneeded", self.on_negotiation_needed)
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472 self._peer_connection.removeEventListener("icecandidate", self.on_ice_candidate)
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473 self._peer_connection.removeEventListener("icegatheringstatechange", self.on_ice_gathering_state_change)
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474
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475 local_video = document["local_video"]
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476 remote_video = document["remote_video"]
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477 if local_video.srcObject:
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478 for track in local_video.srcObject.getTracks():
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479 track.stop()
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480 if remote_video.srcObject:
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481 for track in remote_video.srcObject.getTracks():
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482 track.stop()
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483
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484 self._peer_connection.close()
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485 self.reset_instance()
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486
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487 async def hand_up(self) -> None:
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488 """Terminate the call"""
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489 session_id = self.sid
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490 await self.end_call()
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491 await bridge.call_end(
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492 session_id,
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493 ""
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494 )
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495
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496
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497 webrtc_call = WebRTCCall()
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498
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499 document["call_btn"].bind(
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500 "click",
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501 lambda __: aio.run(webrtc_call.make_call())
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502 )
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503 document["hangup_btn"].bind(
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504 "click",
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505 lambda __: aio.run(webrtc_call.hand_up())
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506 )
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507
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508 bridge.register_signal("action_new", webrtc_call.on_action_new)
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509 bridge.register_signal("call_accepted", webrtc_call._on_call_accepted)
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510 bridge.register_signal("call_ended", webrtc_call._on_call_ended)
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511 bridge.register_signal("ice_candidates_new", webrtc_call._on_ice_candidates_new)
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512
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513 loading.remove_loading_screen()