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+.\" **************************************************************************
+.\" *                                  _   _ ____  _
+.\" *  Project                     ___| | | |  _ \| |
+.\" *                             / __| | | | |_) | |
+.\" *                            | (__| |_| |  _ <| |___
+.\" *                             \___|\___/|_| \_\_____|
+.\" *
+.\" * Copyright (C) 1998 - 2014, 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 CURLOPT_COPYPOSTFIELDS 3 "19 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
+.SH NAME
+CURLOPT_COPYPOSTFIELDS \- have libcurl copy data to POST
+.SH SYNOPSIS
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_COPYPOSTFIELDS, char *data);
+.SH DESCRIPTION
+Pass a char * as parameter, which should be the full \fIdata\fP to post in a
+HTTP POST operation. It behaves as the \fICURLOPT_POSTFIELDS(3)\fP option, but
+the original data is instead copied by the library, allowing the application
+to overwrite the original data after setting this option.
+
+Because data are copied, care must be taken when using this option in
+conjunction with \fICURLOPT_POSTFIELDSIZE(3)\fP or
+\fICURLOPT_POSTFIELDSIZE_LARGE(3)\fP: If the size has not been set prior to
+\fICURLOPT_COPYPOSTFIELDS(3)\fP, the data is assumed to be a zero terminated
+string; else the stored size informs the library about the byte count to
+copy. In any case, the size must not be changed after
+\fICURLOPT_COPYPOSTFIELDS(3)\fP, unless another \fICURLOPT_POSTFIELDS(3)\fP or
+\fICURLOPT_COPYPOSTFIELDS(3)\fP option is issued.
+.SH DEFAULT
+NULL
+.SH PROTOCOLS
+HTTP(S)
+.SH EXAMPLE
+.nf
+CURL *curl = curl_easy_init();
+if(curl) {
+  char local_buffer[1024]="data to send";
+  curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
+
+  /* size of the data to copy from the buffer and send in the request */
+  curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, 12L);
+
+  /* send data from the local stack */
+  curl_easy_setopt(curl, CURLOPT_COPYPOSTFIELDS, local_buffer);
+
+  curl_easy_perform(curl);
+}
+.fi
+.SH AVAILABILITY
+Added in 7.17.1
+.SH RETURN VALUE
+Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or
+CURLE_OUT_OF_MEMORY if there was insufficient heap space.
+.SH "SEE ALSO"
+.BR CURLOPT_POSTFIELDS "(3), " CURLOPT_POSTFIELDSIZE "(3), "