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curl_easy_send(3)                              libcurl Manual                              curl_easy_send(3)



NAME
       curl_easy_send - sends raw data over an "easy" connection

SYNOPSIS
       #include <curl/easy.h>

       CURLcode curl_easy_send( CURL *curl, const void *buffer,  size_t buflen, size_t *n);

DESCRIPTION
       This  function  sends  arbitrary  data  over the established connection. You may use it together with
       curl_easy_recv(3) to implement custom protocols using libcurl. This functionality can be particularly
       useful if you use proxies and/or SSL encryption: libcurl will take care of proxy negotiation and con-nection connection
       nection set-up.

       buffer is a pointer to the data of length buflen that you want sent.  The variable n points  to  will
       receive the number of sent bytes.

       To  establish  the  connection,  set CURLOPT_CONNECT_ONLY option before calling curl_easy_perform(3).
       Note that curl_easy_send(3) will not work on connections that were created without this option.

       You must ensure that the socket is writable before calling curl_easy_send(3), otherwise the call will
       return  CURLE_AGAIN  -  the  socket is used in non-blocking mode internally. Use curl_easy_getinfo(3)
       with CURLINFO_LASTSOCKET to obtain the socket; use your operating system facilities like select(2) to
       check if it can be written to.

AVAILABILITY
       Added in 7.18.2.

RETURN VALUE
       On success, returns CURLE_OK and stores the number of bytes actually sent into *n. Note that this may
       very well be less than the amount you wanted to send.

       On failure, returns the appropriate error code.

EXAMPLE
       See sendrecv.c in docs/examples directory for usage example.

SEE ALSO
       curl_easy_setopt(3), curl_easy_perform(3), curl_easy_getinfo(3), curl_easy_recv(3)



libcurl 7.18.2                                  29 April 2008                              curl_easy_send(3)