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CURLOPT_PREREQFUNCTION: add new callback

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Triggered before a request is made but after a connection is set up

Changes:

- callback: Update docs and callback for pre-request callback
- Add documentation for CURLOPT_PREREQDATA and CURLOPT_PREREQFUNCTION,
- Add redirect test and callback failure test
- Note that the function may be called multiple times on a redirection
- Disable new 2086 test due to Windows weirdness

Closes #7477
This commit is contained in:
Max Dymond 2021-07-22 15:32:30 +01:00 • committed by Daniel Stenberg
parent 06981ba7f6
commit a517378de5
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21 changed files with 602 additions and 4 deletions
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22
lib/multi.c
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@ -2028,6 +2028,28 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
break;
case MSTATE_DO:
if(data->set.fprereq) {
int prereq_rc;
/* call the prerequest callback function */
Curl_set_in_callback(data, true);
prereq_rc = data->set.fprereq(data->set.prereq_userp,
data->info.conn_primary_ip,
data->info.conn_local_ip,
data->info.conn_primary_port,
data->info.conn_local_port);
Curl_set_in_callback(data, false);
if(prereq_rc != CURL_PREREQFUNC_OK) {
failf(data, "operation aborted by pre-request callback");
/* failure in pre-request callback - don't do any other processing */
result = CURLE_ABORTED_BY_CALLBACK;
Curl_posttransfer(data);
multi_done(data, result, FALSE);
stream_error = TRUE;
break;
}
}
if(data->set.connect_only) {
/* keep connection open for application to use the socket */
connkeep(data->conn, "CONNECT_ONLY");