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multi interface using examples

This commit is contained in:
Daniel Stenberg 2002-03-04 10:15:44 +00:00
parent 61540b98c2
commit 9fc62a8dd0
3 changed files with 259 additions and 0 deletions
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92
docs/examples/multi-app.c Normal file
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/*
* This is an example application source code using the multi interface.
*/
#include <stdio.h>
#include <string.h>
/* somewhat unix-specific */
#include <sys/time.h>
#include <unistd.h>
/* To start with, we include the header from the lib directory. This should
later of course be moved to the proper include dir. */
#include "../lib/multi.h"
/*
* Download a HTTP file and upload an FTP file simultaneously.
*/
int main(int argc, char **argv)
{
CURL *http_handle;
CURL *ftp_handle;
CURLM *multi_handle;
int still_running; /* keep number of running handles */
http_handle = curl_easy_init();
ftp_handle = curl_easy_init();
/* set the options (I left out a few, you'll get the point anyway) */
curl_easy_setopt(http_handle, CURLOPT_URL, "http://website.com");
curl_easy_setopt(ftp_handle, CURLOPT_URL, "ftp://ftpsite.com");
curl_easy_setopt(ftp_handle, CURLOPT_UPLOAD, TRUE);
/* init a multi stack */
multi_handle = curl_multi_init();
/* add the individual transfers */
curl_multi_add_handle(multi_handle, http_handle);
curl_multi_add_handle(multi_handle, ftp_handle);
/* we start some action by calling perform right away */
while(CURLM_CALL_MULTI_PERFORM ==
curl_multi_perform(multi_handle, &still_running));
while(still_running) {
struct timeval timeout;
int rc; /* select() return code */
fd_set fdread;
fd_set fdwrite;
fd_set fdexcep;
int maxfd;
FD_ZERO(&fdread);
FD_ZERO(&fdwrite);
FD_ZERO(&fdexcep);
/* set a suitable timeout to play around with */
timeout.tv_sec = 1;
timeout.tv_usec = 0;
/* get file descriptors from the transfers */
curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
switch(rc) {
case -1:
/* select error */
break;
case 0:
/* timeout, do something else */
break;
default:
/* one or more of curl's file descriptors say there's data to read
or write */
curl_multi_perform(multi_handle, &still_running);
break;
}
}
curl_multi_cleanup(multi_handle);
curl_easy_cleanup(http_handle);
curl_easy_cleanup(ftp_handle);
return 0;
}

87
docs/examples/multi-double.c Normal file
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/*
* This is a simple example using the multi interface.
*/
#include <stdio.h>
#include <string.h>
/* somewhat unix-specific */
#include <sys/time.h>
#include <unistd.h>
/* To start with, we include the header from the lib directory. This should
later of course be moved to the proper include dir. */
#include "../lib/multi.h"
/*
* Simply download two HTTP files!
*/
int main(int argc, char **argv)
{
CURL *http_handle;
CURL *http_handle2;
CURLM *multi_handle;
int still_running; /* keep number of running handles */
http_handle = curl_easy_init();
http_handle2 = curl_easy_init();
/* set options */
curl_easy_setopt(http_handle, CURLOPT_URL, "http://www.haxx.se/");
/* set options */
curl_easy_setopt(http_handle2, CURLOPT_URL, "http://localhost/");
/* init a multi stack */
multi_handle = curl_multi_init();
/* add the individual transfers */
curl_multi_add_handle(multi_handle, http_handle);
curl_multi_add_handle(multi_handle, http_handle2);
/* we start some action by calling perform right away */
while(CURLM_CALL_MULTI_PERFORM ==
curl_multi_perform(multi_handle, &still_running));
while(still_running) {
struct timeval timeout;
int rc; /* select() return code */
fd_set fdread;
fd_set fdwrite;
fd_set fdexcep;
int maxfd;
FD_ZERO(&fdread);
FD_ZERO(&fdwrite);
FD_ZERO(&fdexcep);
/* set a suitable timeout to play around with */
timeout.tv_sec = 1;
timeout.tv_usec = 0;
/* get file descriptors from the transfers */
curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
switch(rc) {
case -1:
/* select error */
break;
case 0:
default:
/* timeout or readable/writable sockets */
curl_multi_perform(multi_handle, &still_running);
break;
}
}
curl_multi_cleanup(multi_handle);
curl_easy_cleanup(http_handle);
curl_easy_cleanup(http_handle2);
return 0;
}

80
docs/examples/multi-single.c Normal file
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/*
* This is a very simple example using the multi interface.
*/
#include <stdio.h>
#include <string.h>
/* somewhat unix-specific */
#include <sys/time.h>
#include <unistd.h>
/* To start with, we include the header from the lib directory. This should
later of course be moved to the proper include dir. */
#include "../lib/multi.h"
/*
* Simply download a HTTP file.
*/
int main(int argc, char **argv)
{
CURL *http_handle;
CURLM *multi_handle;
int still_running; /* keep number of running handles */
http_handle = curl_easy_init();
/* set the options (I left out a few, you'll get the point anyway) */
curl_easy_setopt(http_handle, CURLOPT_URL, "http://www.haxx.se/");
/* init a multi stack */
multi_handle = curl_multi_init();
/* add the individual transfers */
curl_multi_add_handle(multi_handle, http_handle);
/* we start some action by calling perform right away */
while(CURLM_CALL_MULTI_PERFORM ==
curl_multi_perform(multi_handle, &still_running));
while(still_running) {
struct timeval timeout;
int rc; /* select() return code */
fd_set fdread;
fd_set fdwrite;
fd_set fdexcep;
int maxfd;
FD_ZERO(&fdread);
FD_ZERO(&fdwrite);
FD_ZERO(&fdexcep);
/* set a suitable timeout to play around with */
timeout.tv_sec = 1;
timeout.tv_usec = 0;
/* get file descriptors from the transfers */
curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
switch(rc) {
case -1:
/* select error */
break;
case 0:
default:
/* timeout or readable/writable sockets */
curl_multi_perform(multi_handle, &still_running);
break;
}
}
curl_multi_cleanup(multi_handle);
curl_easy_cleanup(http_handle);
return 0;
}