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43 lines
2.0 KiB
Groff
43 lines
2.0 KiB
Groff
.\" generated by cd2nroff 0.1 from libcurl-easy.md
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.TH libcurl-easy 3 "2024-07-29" libcurl
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.SH NAME
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libcurl\-easy \- easy interface overview
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.SH DESCRIPTION
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When using libcurl\(aqs "easy" interface you init your session and get a handle
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(often referred to as an "easy handle"), which you use as input to the easy
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interface functions you use. Use \fIcurl_easy_init(3)\fP to get the handle.
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You continue by setting all the options you want in the upcoming transfer, the
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most important among them is the URL itself (you cannot transfer anything
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without a specified URL). You might want to set some callbacks as well that
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are called from the library when data is available etc. For example
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\fICURLOPT_WRITEFUNCTION(3)\fP. \fIcurl_easy_setopt(3)\fP is used for all this.
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\fICURLOPT_URL(3)\fP is the only option you really must set, as otherwise there can
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be no transfer. Another commonly used option is \fICURLOPT_VERBOSE(3)\fP that helps
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you see what libcurl is doing under the hood, which is useful when debugging
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for example. The \fIcurl_easy_setopt(3)\fP man page has a full index of the over 300
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available options.
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If you at any point would like to blank all previously set options for a
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single easy handle, you can call \fIcurl_easy_reset(3)\fP and you can also make a
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clone of an easy handle (with all its set options) using
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\fIcurl_easy_duphandle(3)\fP.
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When all is setup, you tell libcurl to perform the transfer using
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\fIcurl_easy_perform(3)\fP. It performs the entire transfer operation and does not
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return until it is done (successfully or not).
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After the transfer has been made, you can set new options and make another
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transfer, or if you are done, cleanup the session by calling
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\fIcurl_easy_cleanup(3)\fP. If you want persistent connections, you do not cleanup
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immediately, but instead run ahead and perform other transfers using the same
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easy handle.
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.SH SEE ALSO
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.BR curl_easy_cleanup (3),
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.BR curl_easy_init (3),
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.BR curl_easy_setopt (3),
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.BR libcurl (3),
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.BR libcurl-errors (3),
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.BR libcurl-multi (3)
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