urldata: don't touch data->set.httpversion at run-time

Rename it to 'httpwant' and make a cloned field in the state struct as
well for run-time updates.

Also: refuse non-supported HTTP versions. Verified with test 129.

Closes #6585
This commit is contained in:
Daniel Stenberg 2021-02-11 16:30:32 +01:00
parent bd6b54ba1f
commit 88dd1a8a11
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17 changed files with 109 additions and 34 deletions

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@ -2173,7 +2173,7 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
if(!ret) {
infof(data, "Downgrades to HTTP/1.1!\n");
data->set.httpversion = CURL_HTTP_VERSION_1_1;
data->state.httpwant = CURL_HTTP_VERSION_1_1;
/* clear the error message bit too as we ignore the one we got */
data->state.errorbuf = FALSE;
if(!newurl)