romenskiy2012/curl

mirror of https://github.com/curl/curl.git synced 2026-05-20 21:06:20 +03:00

Daniel Stenberg 08a3e8e19a

TLS: remove support for Secure Transport and BearSSL

These libraries do not support TLS 1.3 and have been marked for removal
for over a year. We want to help users select a TLS dependency that is
future-proof and reliable, and not supporting TLS 1.3 in 2025 does not
infer confidence. Users who build libcurl are likely to be served better
and get something more future-proof with a TLS library that supports
1.3.

Closes #16677

2025-06-11 07:54:19 +02:00

2.2 KiB

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SPDX-License-Identifier

Title

Section

Source

See-also

Protocol

TLS-backend

Added-in

curl

CURLOPT_PROXY_CAINFO_BLOB

libcurl

CURLOPT_CAINFO (3)

CURLOPT_CAINFO_BLOB (3)

CURLOPT_CAPATH (3)

CURLOPT_PROXY_CAINFO (3)

CURLOPT_PROXY_CAPATH (3)

CURLOPT_PROXY_SSL_VERIFYHOST (3)

CURLOPT_PROXY_SSL_VERIFYPEER (3)

CURLOPT_SSL_VERIFYHOST (3)

CURLOPT_SSL_VERIFYPEER (3)

TLS

OpenSSL

rustls

Schannel

7.77.0

NAME

CURLOPT_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);

DESCRIPTION

This 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 the blob is initialized with the flags member of struct curl_blob set to CURL_BLOB_COPY, the application does not have to keep the buffer around after setting this.

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).

DEFAULT

NULL

%PROTOCOLS%

EXAMPLE

#include <string.h> /* for strlen */

extern char *strpem; /* strpem must point to a PEM string */
int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    CURLcode res;
    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);
    res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
}

%AVAILABILITY%

RETURN VALUE

curl_easy_setopt(3) returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).

2.2 KiB Raw Blame History