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Implement NAT discovery (RFC 5780) at the client

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Snowflake clients will now attempt NAT discovery using the provided STUN
servers and report their NAT type to the Snowflake broker for matching.
The three possibilities for NAT types are:
- unknown (the client was unable to determine their NAT type),
- restricted (the client has a restrictive NAT and can only be paired
with unrestricted NATs)
- unrestricted (the client can be paired with any other NAT).
This commit is contained in:
Cecylia Bocovich 2020-06-10 17:16:12 -04:00
parent 1448c3885f
commit bf924445e3
5 changed files with 296 additions and 0 deletions
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go.mod
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@ -7,6 +7,7 @@ require (
github.com/golang/protobuf v1.3.1 // indirect
github.com/gorilla/websocket v1.4.1
github.com/pion/sdp/v2 v2.3.4
github.com/pion/stun v0.3.5
github.com/pion/webrtc/v2 v2.2.2
github.com/smartystreets/goconvey v1.6.4
github.com/xtaci/kcp-go/v5 v5.5.12