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Some times the webrtc transport connection is stablished but when I observe in chrome://webrtc-internals the dtls session in that transport it stays stucked in “connecting“ and the remote certificate peer from the grandstream never arrives , what can it be ?, and how can I debug it ?

Turn server is configured for clients and the grandstream has a dedicated public ip

Clients are using sip.js library

The TURN server was tested against trickle ice and other several tests and is working fine

Leonel Franchelli
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1 Answers1

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For anyone going through the same problem, be sure that if you get this situation you force TCP Turn mode with query param '?transport=tcp' if you're using coturn, in our case for some clients their ISP stock default configuration of the router firewall and IDS system were the responsible of blocking the connections

Leonel Franchelli
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