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+.\" **************************************************************************
+.\" * _ _ ____ _
+.\" * Project ___| | | | _ \| |
+.\" * / __| | | | |_) | |
+.\" * | (__| |_| | _ <| |___
+.\" * \___|\___/|_| \_\_____|
+.\" *
+.\" * Copyright (C) 1998 - 2017, 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_mime_data 3 "22 August 2017" "libcurl 7.56.0" "libcurl Manual"
+.SH NAME
+curl_mime_data - set a mime part's body data from memory
+.SH SYNOPSIS
+.B #include <curl/curl.h>
+.sp
+.BI "CURLcode curl_mime_data(curl_mimepart * " part ", const char * " data
+.BI ", ssize_t " datasize ");"
+.ad
+.SH DESCRIPTION
+curl_mime_data() sets a mime part's body content from memory data.
+
+\fIdata\fP points to the data bytes: those are copied to the part and their
+storage may safely be reused after call.
+\fIdatasize\fP is the number of data bytes: it can be set to -1 to indicate
+\fIdata\fP is a nul-terminated character string.
+\fIpart\fP is the part's to assign contents to.
+
+Setting a part's contents twice is valid: only the value set by the last call
+is retained. It is possible to unassign part's contents by setting
+\fIdata\fP to NULL.
+
+Setting very large data is memory consuming: one might consider using
+\fIcurl_mime_data_cb\fP() in such a case.
+
+.SH AVAILABILITY
+As long as at least one of HTTP, SMTP or IMAP is enabled. Added in 7.56.0.
+.SH RETURN VALUE
+CURLE_OK or a CURL error code upon failure.
+
+.SH "SEE ALSO"
+.BR curl_mime_addpart "(3),"
+.BR curl_mime_data_cb "(3)"