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78 lines
2.6 KiB
Groff
78 lines
2.6 KiB
Groff
.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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.\" * are also available at https://curl.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" * SPDX-License-Identifier: curl
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.\" *
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.\" **************************************************************************
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.\"
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.TH CURLOPT_RESUME_FROM 3 "17 Jun 2014" libcurl libcurl
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.SH NAME
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CURLOPT_RESUME_FROM \- offset to resume transfer from
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RESUME_FROM, long from);
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.fi
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.SH DESCRIPTION
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Pass a long as parameter. It contains the offset in number of bytes that you
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want the transfer to start from. Set this option to 0 to make the transfer
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start from the beginning (effectively disabling resume). For FTP, set this
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option to -1 to make the transfer start from the end of the target file
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(useful to continue an interrupted upload).
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When doing uploads with FTP, the resume position is where in the local/source
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file libcurl should try to resume the upload from and it then appends the
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source file to the remote target file.
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If you need to resume a transfer beyond the 2GB limit, use
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\fICURLOPT_RESUME_FROM_LARGE(3)\fP instead.
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.SH DEFAULT
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0, not used
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.SH PROTOCOLS
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HTTP, FTP, SFTP, FILE
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.SH EXAMPLE
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.nf
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CURL *curl = curl_easy_init();
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if(curl) {
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curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com");
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/* resume upload at byte index 200 */
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curl_easy_setopt(curl, CURLOPT_RESUME_FROM, 200L);
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/* ask for upload */
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curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
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/* set total data amount to expect */
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curl_easy_setopt(curl, CURLOPT_INFILESIZE, size_of_file);
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/* Perform the request */
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curl_easy_perform(curl);
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}
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.fi
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.SH AVAILABILITY
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Always
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.SH RETURN VALUE
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Returns CURLE_OK
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.SH "SEE ALSO"
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.BR CURLOPT_RESUME_FROM_LARGE (3),
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.BR CURLOPT_RANGE (3),
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.BR CURLOPT_INFILESIZE (3)
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