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http2: Add handling stream level error

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Previously, when a stream was closed with other than NGHTTP2_NO_ERROR
by RST_STREAM, underlying TCP connection was dropped.  This is
undesirable since there may be other streams multiplexed and they are
very much fine.  This change introduce new error code
CURLE_HTTP2_STREAM, which indicates stream error that only affects the
relevant stream, and connection should be kept open.  The existing
CURLE_HTTP2 means connection error in general.

Ref: https://github.com/curl/curl/issues/659
Ref: https://github.com/curl/curl/pull/663
This commit is contained in:
Tatsuhiro Tsujikawa 2016-02-17 21:36:59 +09:00 • committed by Jay Satiro
parent b2a0376350
commit 92c2a4c053
7 changed files with 20 additions and 2 deletions
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9
lib/http2.c
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@ -1059,7 +1059,7 @@ static ssize_t http2_handle_stream_close(struct connectdata *conn,
if(stream->error_code != NGHTTP2_NO_ERROR) {
failf(data, "HTTP/2 stream %u was not closed cleanly: error_code = %d",
stream->stream_id, stream->error_code);
*err = CURLE_HTTP2;
*err = CURLE_HTTP2_STREAM;
return -1;
}
@ -1231,6 +1231,13 @@ static ssize_t http2_recv(struct connectdata *conn, int sockindex,
*err = CURLE_AGAIN;
return -1;
}
else if(!nghttp2_session_want_read(httpc->h2) &&
!nghttp2_session_want_write(httpc->h2)) {
DEBUGF(infof(data,
"http2_recv: nothing to do in this session\n"));
*err = CURLE_HTTP2;
return -1;
}
else {
char *inbuf;
/* remember where to store incoming data for this stream and how big the