fix: ip discovery changes (74 byte udp packets)

CHANGELOG.md

@@ -24,6 +24,9 @@ These changes are available on the `master` branch, but have not yet been releas
 
 - Fixed the type-hinting of `SlashCommandGroup.walk_commands()` to reflect actual
   behavior. ([#1852](https://github.com/Pycord-Development/pycord/pull/1852))
+- Fixed the voice ip discovery due to the recent
+  [announced change](https://discord.com/channels/613425648685547541/697138785317814292/1080623873629884486).
+  ([#1955](https://github.com/Pycord-Development/pycord/pull/1955))
 
 ## [2.4.0] - 2023-02-10
 

discord/gateway.py

@@ -892,16 +892,16 @@ async def initial_connection(self, data):
         state.voice_port = data["port"]
         state.endpoint_ip = data["ip"]
 
-        packet = bytearray(70)
+        packet = bytearray(74)
         struct.pack_into(">H", packet, 0, 1)  # 1 = Send
         struct.pack_into(">H", packet, 2, 70)  # 70 = Length
         struct.pack_into(">I", packet, 4, state.ssrc)
         state.socket.sendto(packet, (state.endpoint_ip, state.voice_port))
-        recv = await self.loop.sock_recv(state.socket, 70)
+        recv = await self.loop.sock_recv(state.socket, 74)
         _log.debug("received packet in initial_connection: %s", recv)
 
-        # the ip is ascii starting at the 4th byte and ending at the first null
-        ip_start = 4
+        # the ip is ascii starting at the 8th byte and ending at the first null
+        ip_start = 8
         ip_end = recv.index(0, ip_start)
         state.ip = recv[ip_start:ip_end].decode("ascii")