CURLOPT_PROXY_CAINFO_BLOB - Online Linux Manual PageSection : 3
Updated : January 09, 2022
Source : libcurl 7.82.0
Note : curl_easy_setopt options

NAMECURLOPT_PROXY_CAINFO_BLOB − proxy Certificate Authority (CA) bundle in PEM format

SYNOPSIS#include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_CAINFO_BLOB, struct curl_blob *stblob);

DESCRIPTIONThis option is for connecting to an HTTPS proxy, not an HTTPS server. Pass a pointer to a curl_blob structure, which contains information (pointer and size) about a memory block with binary data of PEM encoded content holding one or more certificates to verify the HTTPS proxy with. If CURLOPT_PROXY_SSL_VERIFYPEER(3) is zero and you avoid verifying the server's certificate, CURLOPT_PROXY_CAINFO_BLOB(3) is not needed. This option overrides CURLOPT_PROXY_CAINFO(3).

DEFAULTNULL

PROTOCOLSUsed with HTTPS proxy

EXAMPLEchar *strpem; /* strpem must point to a PEM string */ CURL *curl = curl_easy_init(); if(curl) { struct curl_blob blob; curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/"); /* using an HTTPS proxy */ curl_easy_setopt(curl, CURLOPT_PROXY, "https://localhost:443"); blob.data = strpem; blob.len = strlen(strpem); blob.flags = CURL_BLOB_COPY; curl_easy_setopt(curl, CURLOPT_PROXY_CAINFO_BLOB, &blob); ret = curl_easy_perform(curl); curl_easy_cleanup(curl); }

AVAILABILITYAdded in 7.77.0. This option is supported by the rustls (since 7.82.0), OpenSSL, Secure Transport and Schannel backends.

RETURN VALUEReturns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or CURLE_OUT_OF_MEMORY if there was insufficient heap space.

SEE ALSOCURLOPT_PROXY_CAINFO(3), CURLOPT_PROXY_CAPATH (3)," CURLOPT_PROXY_SSL_VERIFYPEER(3), CURLOPT_PROXY_SSL_VERIFYHOST (3)," CURLOPT_CAINFO(3), CURLOPT_CAINFO_BLOB (3)," CURLOPT_CAPATH(3)," CURLOPT_SSL_VERIFYPEER(3), CURLOPT_SSL_VERIFYHOST (3),"
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