[#OSSL_CMP_MSG_http_perform]
= OSSL_CMP_MSG_http_perform
:mrdocs:

Send a CMP request over HTTP(S) to the server configured in `ctx` and return the response.

== Synopsis

Declared in `<openssl/cmp.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:OSSL_CMP_MSG.adoc[OSSL_CMP_MSG]*
OSSL_CMP_MSG_http_perform(
    xref:OSSL_CMP_CTX.adoc[OSSL_CMP_CTX]* ctx,
    xref:OSSL_CMP_MSG.adoc[OSSL_CMP_MSG] const* req);
----

== Return Value

Server response message on success, or NULL on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| CMP context with server address, path, and transfer options.
| *req*
| CMP request message to send.
|===


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