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curl_easy_perform: fix timeout handling

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curl_multi_wait() was erroneously used from within
curl_easy_perform(). It could lead to it believing there was no socket
to wait for and then instead sleep for a while instead of monitoring the
socket and then miss acting on that activity as swiftly as it should
(causing an up to 1000 ms delay).

Reported-by: Antoni Villalonga
Fixes #3305
Closes #3306
Closes #3308
This commit is contained in:
Daniel Stenberg 2018-11-24 23:20:19 +01:00
parent ae7a09db20
commit 34fe0e1622
No known key found for this signature in database
GPG key ID: 5CC908FDB71E12C2
3 changed files with 30 additions and 5 deletions
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20
lib/multi.c
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@ -985,11 +985,12 @@ CURLMcode curl_multi_fdset(struct Curl_multi *multi,
#define NUM_POLLS_ON_STACK 10
CURLMcode curl_multi_wait(struct Curl_multi *multi,
CURLMcode Curl_multi_wait(struct Curl_multi *multi,
struct curl_waitfd extra_fds[],
unsigned int extra_nfds,
int timeout_ms,
int *ret)
int *ret,
bool *gotsocket) /* if any socket was checked */
{
struct Curl_easy *data;
curl_socket_t sockbunch[MAX_SOCKSPEREASYHANDLE];
@ -1003,6 +1004,9 @@ CURLMcode curl_multi_wait(struct Curl_multi *multi,
int retcode = 0;
struct pollfd a_few_on_stack[NUM_POLLS_ON_STACK];
if(gotsocket)
*gotsocket = FALSE;
if(!GOOD_MULTI_HANDLE(multi))
return CURLM_BAD_HANDLE;
@ -1135,9 +1139,21 @@ CURLMcode curl_multi_wait(struct Curl_multi *multi,
free(ufds);
if(ret)
*ret = retcode;
if(gotsocket && (extra_fds || curlfds))
/* if any socket was checked */
*gotsocket = TRUE;
return CURLM_OK;
}
CURLMcode curl_multi_wait(struct Curl_multi *multi,
struct curl_waitfd extra_fds[],
unsigned int extra_nfds,
int timeout_ms,
int *ret)
{
return Curl_multi_wait(multi, extra_fds, extra_nfds, timeout_ms, ret, NULL);
}
/*
* Curl_multi_connchanged() is called to tell that there is a connection in
* this multi handle that has changed state (pipelining become possible, the