1CURLOPT_PORT(3) libcurl CURLOPT_PORT(3)
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6 CURLOPT_PORT - remote port number to connect to
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9 #include <curl/curl.h>
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11 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PORT, long number);
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14 We discourage using this option since its scope is not obvious and hard
15 to predict. Set the preferred port number in the URL instead.
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17 This option sets number to be the remote port number to connect to, in‐
18 stead of the one specified in the URL or the default port for the used
19 protocol.
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21 Usually, you just let the URL decide which port to use but this allows
22 the application to override that.
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24 While this option accepts a 'long', a port number is an unsigned 16 bit
25 number and therefore using a port number lower than zero or over 65535
26 will cause a CURLE_BAD_FUNCTION_ARGUMENT error.
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29 By default this is 0 which makes it not used. This also makes port num‐
30 ber zero impossible to set with this API.
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33 Used for all protocols that speak to a port number.
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36 CURL *curl = curl_easy_init();
37 if(curl) {
38 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
39 curl_easy_setopt(curl, CURLOPT_PORT, 8080L);
40 ret = curl_easy_perform(curl);
41 curl_easy_cleanup(curl);
42 }
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45 Always
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48 Returns CURLE_OK
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51 CURLOPT_STDERR(3), CURLOPT_DEBUGFUNCTION(3),
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55ibcurl 8.2.1 April 26, 2023 CURLOPT_PORT(3)