NAME

       OSSL_CMP_MSG_http_perform - client-side HTTP(S) transfer of a CMP request-response pair

SYNOPSIS

        #include <openssl/cmp.h>

        OSSL_CMP_MSG *OSSL_CMP_MSG_http_perform(OSSL_CMP_CTX *ctx,
                                                const OSSL_CMP_MSG *req);

DESCRIPTION

       OSSL_CMP_MSG_http_perform() sends the given PKIMessage req to the CMP server specified in
       ctx via OSSL_CMP_CTX_set1_server(3) and optionally OSSL_CMP_CTX_set_serverPort(3), using
       any "CMP alias" optionally specified via OSSL_CMP_CTX_set1_serverPath(3).  The default
       port is 80 for HTTP and 443 for HTTPS; the default path is "/".  On success the function
       returns the server's response PKIMessage.

       The function makes use of any HTTP callback function set via OSSL_CMP_CTX_set_http_cb(3).
       It respects any timeout value set via OSSL_CMP_CTX_set_option(3) with an
       OSSL_CMP_OPT_MSG_TIMEOUT argument.  It also respects any HTTP(S) proxy options set via
       OSSL_CMP_CTX_set1_proxy(3) and OSSL_CMP_CTX_set1_no_proxy(3) and the respective
       environment variables.  Proxying plain HTTP is supported directly, while using a proxy for
       HTTPS connections requires a suitable callback function such as
       OSSL_HTTP_proxy_connect(3).

NOTES

       CMP is defined in RFC 4210.  HTTP transfer for CMP is defined in RFC 6712.

RETURN VALUES

       OSSL_CMP_MSG_http_perform() returns a CMP message on success, else NULL.

SEE ALSO

       OSSL_CMP_CTX_new(3), OSSL_HTTP_proxy_connect(3).

HISTORY

       The OpenSSL CMP support was added in OpenSSL 3.0.

COPYRIGHT

       Copyright 2007-2021 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the Apache License 2.0 (the "License").  You may not use this file except
       in compliance with the License.  You can obtain a copy in the file LICENSE in the source
       distribution or at <https://www.openssl.org/source/license.html>.