| Current Path : /usr/local/share/doc/curl/libcurl/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/local/share/doc/curl/libcurl/curl_easy_send.html |
<html><head>
<title>curl_easy_send man page</title>
<meta name="generator" content="roffit 0.7">
<STYLE type="text/css">
P.level0 {
padding-left: 2em;
}
P.level1 {
padding-left: 4em;
}
P.level2 {
padding-left: 6em;
}
span.emphasis {
font-style: italic;
}
span.bold {
font-weight: bold;
}
span.manpage {
font-weight: bold;
}
h2.nroffsh {
background-color: #e0e0e0;
}
span.nroffip {
font-weight: bold;
font-size: 120%;
font-family: monospace;
}
p.roffit {
text-align: center;
font-size: 80%;
}
</STYLE>
</head><body>
<p class="level0"><a name="NAME"></a><h2 class="nroffsh">NAME</h2>
<p class="level0">curl_easy_send - sends raw data over an "easy" connection <a name="SYNOPSIS"></a><h2 class="nroffsh">SYNOPSIS</h2>
<p class="level0"><span Class="bold">#include <curl/easy.h></span>
<p class="level0"><span Class="bold">CURLcode curl_easy_send( CURL * curl , const void * buffer ,</span> <span Class="bold"> size_t buflen , size_t * n );</span>
<p class="level0"><a name="DESCRIPTION"></a><h2 class="nroffsh">DESCRIPTION</h2>
<p class="level0">This function sends arbitrary data over the established connection. You may use it together with <a class="emphasis" href="./curl_easy_recv.html">curl_easy_recv(3)</a> 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 connection set-up.
<p class="level0"><span Class="bold">buffer</span> is a pointer to the data of length <span Class="bold">buflen</span> that you want sent. The variable <span Class="bold">n</span> points to will receive the number of sent bytes.
<p class="level0">To establish the connection, set <span Class="bold">CURLOPT_CONNECT_ONLY</span> option before calling <a class="emphasis" href="./curl_easy_perform.html">curl_easy_perform(3)</a>. Note that <a class="emphasis" href="./curl_easy_send.html">curl_easy_send(3)</a> will not work on connections that were created without this option.
<p class="level0">You must ensure that the socket is writable before calling <a class="emphasis" href="./curl_easy_send.html">curl_easy_send(3)</a>, otherwise the call will return <span Class="bold">CURLE_AGAIN</span> - the socket is used in non-blocking mode internally. Use <a class="emphasis" href="./curl_easy_getinfo.html">curl_easy_getinfo(3)</a> with <span Class="bold">CURLINFO_LASTSOCKET</span> to obtain the socket; use your operating system facilities like <span Class="emphasis">select(2)</span> to check if it can be written to. <a name="AVAILABILITY"></a><h2 class="nroffsh">AVAILABILITY</h2>
<p class="level0">Added in 7.18.2. <a name="RETURN"></a><h2 class="nroffsh">RETURN VALUE</h2>
<p class="level0">On success, returns <span Class="bold">CURLE_OK</span> and stores the number of bytes actually sent into <span Class="bold">*n</span>. Note that this may very well be less than the amount you wanted to send.
<p class="level0">On failure, returns the appropriate error code. <a name="EXAMPLE"></a><h2 class="nroffsh">EXAMPLE</h2>
<p class="level0">See <span Class="bold">sendrecv.c</span> in <span Class="bold">docs/examples</span> directory for usage example. <a name="SEE"></a><h2 class="nroffsh">SEE ALSO</h2>
<p class="level0"><a class="manpage" href="./curl_easy_setopt.html">curl_easy_setopt (3)</a> <a class="manpage" href="./curl_easy_perform.html"> curl_easy_perform (3)</a> <a class="manpage" href="./curl_easy_getinfo.html"> curl_easy_getinfo (3)</a> <span Class="manpage"> </span> <a class="manpage" href="./curl_easy_recv.html">curl_easy_recv (3) </a> <p class="roffit">
This HTML page was made with <a href="http://daniel.haxx.se/projects/roffit/">roffit</a>.
</body></html>