Hi all,

I'm working with a MCU and I encounter a problem only and only when the MCU is 
online (on the cloud - Amazon).

The ice connection fail. It happens most of the time (95%). But surprisingly 
sometime the connection successfully connects.

This problem doesn't happen when I test locally.

I run firefox with the logs showing and here is the last part of the long file 
generated by firefox:

(ice/DEBUG) ICE(PC:1413447937821882 (id=47 url=http://.../index.html)): Message 
is a retransmit
(ice/DEBUG) ICE(PC:1413447937821882 (id=47 url=http://.../index.html)): Socket 
ready to read
(ice/DEBUG) ICE(PC:1413447937821882 (id=47 url=http://.../index.html)): Read 
120 bytes from IP4:54.251.114.83:3478/UDP
(stun/DEBUG) ICE(PC:1413447937821882 (id=47 url=http://.../index.html)): 
Message is STUN 
(indication)[120]=001700642112a442101e5f66f33ac8765c52c96500130054010100402112a44269926c1dfaf79e726b04d822002000080001ffdd17e9d6110006000d364f39493a3463613563316236202020000800144d23d6df6a369d708e4a6d1800f76462b3d6040c8028000442880a34001200080001bb491756a12b
(stun/DEBUG) Parsing STUN message of 120 bytes
(stun/DEBUG) Parsed MsgType: DATA-INDICATION
(stun/DEBUG) Parsed Length: 100
(stun/DEBUG) Parsed Cookie: 2112a442
(stun/DEBUG) Parsed ID[12]=101e5f66f33ac8765c52c965
(stun/DEBUG) size = 100
(stun/DEBUG) 
DATA[84]=010100402112a44269926c1dfaf79e726b04d822002000080001ffdd17e9d6110006000d364f39493a3463613563316236202020000800144d23d6df6a369d708e4a6d1800f76462b3d6040c8028000442880a34
(stun/DEBUG) Before pedantic attr_info checks
(stun/DEBUG) After pedantic attr_info checks
(stun/DEBUG) size = 12
(stun/DEBUG) Masked XOR-MAPPED-ADDRESS = IP4:23.86.161.43:47945/UDP
(stun/DEBUG) Unmasked XOR-MAPPED-ADDRESS = IP4:54.68.5.105:39515/UDP
(stun/DEBUG) Parsed XOR-PEER-ADDRESS: IP4:54.68.5.105:39515/UDP (unmasked) 
IP4:23.86.161.43:47945/UDP (masked)
(stun/DEBUG) Before pedantic attr_info checks
(stun/DEBUG) After pedantic attr_info checks
(stun/DEBUG) Starting to sanity check encoding
(ice/DEBUG) Unwrapped a data indication.
(ice/DEBUG) ICE(PC:1413447937821882 (id=47 url=http://.../index.html)): Read 84 
bytes relayed from IP4:54.68.5.105:39515/UDP
(stun/DEBUG) ICE(PC:1413447937821882 (id=47 url=http://.../index.html)): 
Message is STUN 
(other)[84]=010100402112a44269926c1dfaf79e726b04d822002000080001ffdd17e9d6110006000d364f39493a3463613563316236202020000800144d23d6df6a369d708e4a6d1800f76462b3d6040c8028000442880a34
(ice/DEBUG) ICE(PC:1413447937821882 (id=47 url=http://.../index.html)): Message 
is a retransmit
(generic/DEBUG) Timer callback fired (set in 
nr_ice_peer_ctx_start_trickle_timer:358)
(ice/INFO) ICE(PC:1413447937821882 (id=47 url=http://.../index.html)): peer 
(PC:1413447937821882 (id=47 url=http://.../index.html):default) Trickle grace 
period is over; marking every component with only failed pairs as failed.

What is the problem raised here?

Any point of view is welcome, thanks
Francois
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