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multi: improved HTTP_1_1_REQUIRED handling

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Make sure to downgrade to 1.1 even when we get this HTTP/2 stream error
on first flight.

Reported-by: niner on github
Fixes #3696
Closes #3707
This commit is contained in:
Daniel Stenberg 2019-03-27 23:28:13 +01:00
parent 8759e335ab
commit dbce1bd86f
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GPG Key ID: 5CC908FDB71E12C2
1 changed files with 19 additions and 18 deletions
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37
lib/multi.c
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@ -1881,23 +1881,25 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
}
}
else if((CURLE_HTTP2_STREAM == result) &&
Curl_h2_http_1_1_error(data->conn)) {
Curl_h2_http_1_1_error(data->conn)) {
CURLcode ret = Curl_retry_request(data->conn, &newurl);
infof(data, "Forcing HTTP/1.1 for NTLM");
data->set.httpversion = CURL_HTTP_VERSION_1_1;
if(!ret)
retry = (newurl)?TRUE:FALSE;
else
result = ret;
if(retry) {
/* if we are to retry, set the result to OK and consider the
request as done */
if(!ret) {
infof(data, "Downgrades to HTTP/1.1!\n");
data->set.httpversion = CURL_HTTP_VERSION_1_1;
/* clear the error message bit too as we ignore the one we got */
data->state.errorbuf = FALSE;
if(!newurl)
/* typically for HTTP_1_1_REQUIRED error on first flight */
newurl = strdup(data->change.url);
/* if we are to retry, set the result to OK and consider the request
as done */
retry = TRUE;
result = CURLE_OK;
done = TRUE;
}
else
result = ret;
}
if(result) {
@ -1942,13 +1944,12 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
}
else
follow = FOLLOW_RETRY;
result = multi_done(data, CURLE_OK, FALSE);
(void)multi_done(data, CURLE_OK, FALSE);
/* multi_done() might return CURLE_GOT_NOTHING */
result = Curl_follow(data, newurl, follow);
if(!result) {
result = Curl_follow(data, newurl, follow);
if(!result) {
multistate(data, CURLM_STATE_CONNECT);
rc = CURLM_CALL_MULTI_PERFORM;
}
multistate(data, CURLM_STATE_CONNECT);
rc = CURLM_CALL_MULTI_PERFORM;
}
free(newurl);
}