H3: Fix racy read from stream-less channel #9761
Merged
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There is a race condition in the client when it is setting the stream, which happens after a new request is created and its headers are sent onto the network. If the network and the server happen to be fast enough, the response could arrive at the client before the channel's stream has been set, making
HttpReceiverOverHTTP3
see anull
stream.The solution is to set the stream field before any data is sent onto the network, like HTTP/2 is doing.
Fixes #9655 once merged to 12.