I was running the test with a debug build, so I think in my case the test was stopping early because I was hitting a very early assert at https://searchfox.org/mozilla-central/rev/74518d4f6979b088e28405ba7e6238f4707639cf/netwerk/protocol/http/Http2Stream.cpp#65 It's likely that with a regular build, it simply hangs / doesn't properly resume the request. I can easily reproduce this when testing manually with a bidi client, but I can't reproduce it with a regular wdspec test for now.
Bug 1830875 Comment 24 Edit History
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I was running the test with a debug build, so I think in my case the test was stopping early because I was hitting a very early assert at https://searchfox.org/mozilla-central/rev/74518d4f6979b088e28405ba7e6238f4707639cf/netwerk/protocol/http/Http2Stream.cpp#65 It's likely that with a regular build, it simply hangs / doesn't properly resume the request. I can easily reproduce this when testing manually with a bidi client, but I can't reproduce it with a regular wdspec test for now. Edit: This specific issue is most likely related to http2 here, which we don't use by default in wdspec tests