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annotate mupdf-source/thirdparty/curl/docs/libcurl/curl_easy_perform.3 @ 17:dd9cdb856310

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Remove PKG-INFO from the because it is regenerated automatically for the sdist
author Franz Glasner <fzglas.hg@dom66.de>
date Thu, 18 Sep 2025 17:40:40 +0200
parents b50eed0cc0ef
children
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1 .\" **************************************************************************
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2 .\" * _ _ ____ _
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3 .\" * Project ___| | | | _ \| |
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4 .\" * / __| | | | |_) | |
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5 .\" * | (__| |_| | _ <| |___
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6 .\" * \___|\___/|_| \_\_____|
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7 .\" *
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8 .\" * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 .\" *
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10 .\" * This software is licensed as described in the file COPYING, which
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11 .\" * you should have received as part of this distribution. The terms
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12 .\" * are also available at https://curl.haxx.se/docs/copyright.html.
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13 .\" *
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14 .\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 .\" * copies of the Software, and permit persons to whom the Software is
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16 .\" * furnished to do so, under the terms of the COPYING file.
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17 .\" *
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18 .\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 .\" * KIND, either express or implied.
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20 .\" *
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21 .\" **************************************************************************
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22 .TH curl_easy_perform 3 "5 Mar 2001" "libcurl 7.7" "libcurl Manual"
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23 .SH NAME
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24 curl_easy_perform - perform a blocking file transfer
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25 .SH SYNOPSIS
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26 .B #include <curl/curl.h>
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27 .sp
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28 .BI "CURLcode curl_easy_perform(CURL *" easy_handle ");"
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29 .ad
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30 .SH DESCRIPTION
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31 Invoke this function after \fIcurl_easy_init(3)\fP and all the
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32 \fIcurl_easy_setopt(3)\fP calls are made, and will perform the transfer as
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33 described in the options. It must be called with the same \fBeasy_handle\fP as
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34 input as the \fIcurl_easy_init(3)\fP call returned.
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35
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36 \fIcurl_easy_perform(3)\fP performs the entire request in a blocking manner
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37 and returns when done, or if it failed. For non-blocking behavior, see
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38 \fIcurl_multi_perform(3)\fP.
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39
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40 You can do any amount of calls to \fIcurl_easy_perform(3)\fP while using the
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41 same \fBeasy_handle\fP. If you intend to transfer more than one file, you are
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42 even encouraged to do so. libcurl will then attempt to re-use the same
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43 connection for the following transfers, thus making the operations faster,
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44 less CPU intense and using less network resources. Just note that you will
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45 have to use \fIcurl_easy_setopt(3)\fP between the invokes to set options for
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46 the following curl_easy_perform.
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47
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48 You must never call this function simultaneously from two places using the
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49 same \fBeasy_handle\fP. Let the function return first before invoking it
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50 another time. If you want parallel transfers, you must use several curl
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51 easy_handles.
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52
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53 While the \fBeasy_handle\fP is added to a multi handle, it cannot be used by
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54 \fIcurl_easy_perform(3)\fP.
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55 .SH RETURN VALUE
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56 CURLE_OK (0) means everything was ok, non-zero means an error occurred as
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57 .I <curl/curl.h>
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58 defines - see \fIlibcurl-errors(3)\fP. If the \fICURLOPT_ERRORBUFFER(3)\fP was
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59 set with \fIcurl_easy_setopt(3)\fP there will be a readable error message in
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60 the error buffer when non-zero is returned.
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61 .SH EXAMPLE
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62 .nf
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63 CURL *curl = curl_easy_init();
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64 if(curl) {
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65 CURLcode res;
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66 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
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67 res = curl_easy_perform(curl);
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68 curl_easy_cleanup(curl);
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69 }
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70 .fi
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71 .SH "SEE ALSO"
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72 .BR curl_easy_init "(3), " curl_easy_setopt "(3), "
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73 .BR curl_multi_add_handle "(3), " curl_multi_perform "(3), "
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74 .BR libcurl-errors "(3), "