mirror of
https://github.com/moparisthebest/curl
synced 2024-12-22 08:08:50 -05:00
69 lines
3.0 KiB
Groff
69 lines
3.0 KiB
Groff
.\" **************************************************************************
|
|
.\" * _ _ ____ _
|
|
.\" * Project ___| | | | _ \| |
|
|
.\" * / __| | | | |_) | |
|
|
.\" * | (__| |_| | _ <| |___
|
|
.\" * \___|\___/|_| \_\_____|
|
|
.\" *
|
|
.\" * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
.\" *
|
|
.\" * This software is licensed as described in the file COPYING, which
|
|
.\" * you should have received as part of this distribution. The terms
|
|
.\" * are also available at https://curl.haxx.se/docs/copyright.html.
|
|
.\" *
|
|
.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
.\" * copies of the Software, and permit persons to whom the Software is
|
|
.\" * furnished to do so, under the terms of the COPYING file.
|
|
.\" *
|
|
.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
.\" * KIND, either express or implied.
|
|
.\" *
|
|
.\" **************************************************************************
|
|
.\"
|
|
.TH curl_easy_send 3 "29 April 2008" "libcurl 7.18.2" "libcurl Manual"
|
|
.SH NAME
|
|
curl_easy_send - sends raw data over an "easy" connection
|
|
.SH SYNOPSIS
|
|
.B #include <curl/easy.h>
|
|
.sp
|
|
.BI "CURLcode curl_easy_send( CURL *" curl ", const void *" buffer ","
|
|
.BI " size_t " buflen ", size_t *" n ");"
|
|
.ad
|
|
.SH DESCRIPTION
|
|
This function sends arbitrary data over the established connection. You may
|
|
use it together with \fIcurl_easy_recv(3)\fP 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.
|
|
|
|
\fBbuffer\fP is a pointer to the data of length \fBbuflen\fP that you want sent.
|
|
The variable \fBn\fP points to will receive the number of sent bytes.
|
|
|
|
To establish the connection, set \fICURLOPT_CONNECT_ONLY(3)\fP option before
|
|
calling \fIcurl_easy_perform(3)\fP or \fIcurl_multi_perform()\fP. Note that
|
|
\fIcurl_easy_send(3)\fP will not work on connections that were created without
|
|
this option.
|
|
|
|
You must ensure that the socket is writable before calling
|
|
\fIcurl_easy_send(3)\fP, otherwise the call will return \fBCURLE_AGAIN\fP -
|
|
the socket is used in non-blocking mode internally. Use
|
|
\fIcurl_easy_getinfo(3)\fP with \fICURLINFO_ACTIVESOCKET(3)\fP to obtain the
|
|
socket; use your operating system facilities like \fIselect(2)\fP to check if
|
|
it can be written to.
|
|
.SH AVAILABILITY
|
|
Added in 7.18.2.
|
|
.SH RETURN VALUE
|
|
On success, returns \fBCURLE_OK\fP and stores the number of bytes actually
|
|
sent into \fB*n\fP. Note that this may very well be less than the amount you
|
|
wanted to send.
|
|
|
|
On failure, returns the appropriate error code.
|
|
|
|
If there's no socket available to use from the previous transfer, this function
|
|
returns CURLE_UNSUPPORTED_PROTOCOL.
|
|
.SH EXAMPLE
|
|
See \fBsendrecv.c\fP in \fBdocs/examples\fP directory for usage example.
|
|
.SH "SEE ALSO"
|
|
.BR curl_easy_setopt "(3), " curl_easy_perform "(3), " curl_easy_getinfo "(3), "
|
|
.BR curl_easy_recv "(3) "
|