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Some HTX responses may not always contain a EOM block. For example this is the case if content-length header is missing from the HTTP server response. Stream termination is thus signaled to QUIC mux via shutw callback. However, this is interpreted inconditionnally as an early close by the mux with a RESET_STREAM emission. Most of the times, QUIC clients report this as an error. To fix this, check if htx.extra is set to HTX_UNKOWN_PAYLOAD_LENGTH for a qcs instance. If true, shutw will never be used to emit a RESET_STREAM. Instead, the stream will be closed properly with a FIN STREAM frame. If all data were already transfered, an empty STREAM frame is sent. This fix may help with the github issue #2004 where chrome browser stop to use QUIC after receiving RESET_STREAM frames. This issue was reported by Vladimir Zakharychev. Thanks to him for his help and testing. It was also reproduced locally using httpterm with the query string "/?s=1k&b=0&C=1". This should be backported up to 2.7. |
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