Search Issue Tracker

Fixed in Unity 2017.2



Found in


Issue ID




[WebAssembly] IPAddress.NetworkToHostOrder(long) does not work on WebGL with WebAssembly enabled




Priority: 3Not yet prioritized for a release


Severity: 1Crash or major loss of functionality

Reproduction steps:
1. Open project attached (
2. Build project on WebGL with WebAssembly marked.
3. Run it.

Expected result: Game launches succesfully.
Actual result: Game stops and error appears "Uncaught TypeError: asm.setTempRet() is not a function"

Note: WebAssembly is enabled. There is only one code in line start function: Debug.ErrorLog(IPAddress.NetworkToHostOrder(0L));

Reproduced on: 5.6.0p1, 2017.1.0b1

Fixed on 5.6.1p4, 2017.1.0b9 and 2017.2.0a2.

Comments (2)

  1. 1cdde05240ee6f9c23978c4f4c014f4b?d=mm


    May 18, 2017 13:21

    Please add this fix to 5.6.

  2. D1e0a54c21511bd42c1c0b2c2718dcef?d=mm


    May 12, 2017 04:54

    How come is this fixed when 2017.1 is not ready, and there is no backport of the fix for 5.6? Or should we create a new issue for a 5.6 backport of this to be able to vote on that?

    Is the recommended solution to use 2017.1 for webassembly builds now?

    I'll continue solving with 5.6 by making sure we don't let unhanled exceptions thru in the application code, which is of course good anyway, but hard to ensure especially with networking involved.

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.