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http: allow Curl_add_buffer_send() to do a short first send by force

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In a debug build, settting the environment variable "CURL_SMALLREQSEND"
will make the first HTTP request send not send more bytes than the set
amount, thus ending up verifying that the logic for handling a split
HTTP request send works correctly.
This commit is contained in:
Daniel Stenberg 2020-04-07 15:09:04 +02:00
parent 0bcf975c38
commit 3e376059bb
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GPG Key ID: 5CC908FDB71E12C2
1 changed files with 14 additions and 1 deletions
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15
lib/http.c
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@ -1229,8 +1229,21 @@ CURLcode Curl_add_buffer_send(Curl_send_buffer **inp,
memcpy(data->state.ulbuf, ptr, sendsize);
ptr = data->state.ulbuf;
}
else
else {
#ifdef CURLDEBUG
/* Allow debug builds override this logic to force short initial sends */
char *p = getenv("CURL_SMALLREQSEND");
if(p) {
size_t altsize = (size_t)strtoul(p, NULL, 10);
if(altsize)
sendsize = CURLMIN(size, altsize);
else
sendsize = size;
}
else
#endif
sendsize = size;
}
result = Curl_write(conn, sockfd, ptr, sendsize, &amount);