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http: deal with partial CONNECT sends

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Also added 'CURL_SMALLSENDS' to make Curl_write() send short packets,
which helped verifying this even more.

Add test 363 to verify.

Reported-by: ustcqidi on github
Fixes #6950
Closes #7024
This commit is contained in:
Daniel Stenberg 2021-05-06 13:04:03 +02:00
parent 63813a0325
commit 51c0ebcff2
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GPG key ID: 5CC908FDB71E12C2
8 changed files with 213 additions and 54 deletions
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12
lib/sendf.c
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@ -309,6 +309,18 @@ CURLcode Curl_write(struct Curl_easy *data,
conn = data->conn;
num = (sockfd == conn->sock[SECONDARYSOCKET]);
#ifdef CURLDEBUG
{
/* Allow debug builds to override this logic to force short sends
*/
char *p = getenv("CURL_SMALLSENDS");
if(p) {
size_t altsize = (size_t)strtoul(p, NULL, 10);
if(altsize)
len = CURLMIN(len, altsize);
}
}
#endif
bytes_written = conn->send[num](data, num, mem, len, &result);
*written = bytes_written;