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+.\" **************************************************************************
+.\" *                                  _   _ ____  _
+.\" *  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(3)\fP. Note that
+\fIcurl_easy_send(3)\fP will not work on connections that were created without
+this option.
+
+The call will return \fBCURLE_AGAIN\fP if it's not possible to send data right
+now - the socket is used in non-blocking mode internally. When
+\fBCURLE_AGAIN\fP is returned, use your operating system facilities like
+\fIselect(2)\fP to wait until the socket is writable. The socket may be
+obtained using \fIcurl_easy_getinfo(3)\fP with \fICURLINFO_ACTIVESOCKET(3)\fP.
+
+Furthermore if you wait on the socket and it tells you it's writable,
+\fIcurl_easy_send(3)\fP may return \fBCURLE_AGAIN\fP if the only data that was
+sent was for internal SSL processing, and no other data could be sent.
+
+.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.
+
+This function may return \fBCURLE_AGAIN\fP. In this case, use your operating
+system facilities to wait until the socket is writable, and retry.
+
+If there's no socket available to use from the previous transfer, this function
+returns \fBCURLE_UNSUPPORTED_PROTOCOL\fP.
+.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) "