WASM Support

[andipabst]

• Use instant::Instant instead of std::time::Instant for
• Remove \0 byte after transit 'receiver ready' message
• Change Message type for transit 'go' message from text to binary
• Add error messages for transit protocol debugging

[codecov[bot]]

Codecov Report

Merging #158 (8ce6278) into dev (496d94b) will decrease coverage by 6.59%. The diff coverage is 33.33%.

@@            Coverage Diff             @@
##              dev     #158      +/-   ##
==========================================
- Coverage   52.39%   45.79%   -6.60%     
==========================================
  Files          15       16       +1     
  Lines        2697     4804    +2107     
==========================================
+ Hits         1413     2200     +787     
- Misses       1284     2604    +1320     

Impacted Files	Coverage Δ
src/transit.rs	80.27% <33.33%> (ø)
src/core.rs	79.08% <0.00%> (-2.08%)	:arrow_down:
src/lib.rs	37.20% <0.00%> (ø)
src/util.rs	33.33% <0.00%> (+0.93%)	:arrow_up:

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[piegamesde]

Thank you already. In the error handling commit, you forgot to make use of the RelayHandshakeFailed variant. Also, please add #[cfg(not(target_family = "wasm"))] to StunError, PUBLIC_STUN_SERVER and use ToSocketAddrs to silence the compiler warnings. (I know you didn't introduce them, but GitHub renders them in a really annoying way if I fix them myself you't have to rebase again)

[andipabst]

Thanks for the hints, I chanded the code accordingly :+1:

[piegamesde]

Thank you. Please note that I've moved the commits on the dev branch to a new wasm branch. Please use that for testing+contributing WASM support from now on. See also #161