[#SSL_CTX_compress_certs]
= SSL_CTX_compress_certs
:mrdocs:

Pre‐compress all certificates configured on a server SSL_CTX with algorithm `alg.`

== Synopsis

Declared in `<openssl/ssl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
SSL_CTX_compress_certs(
    xref:SSL_CTX.adoc[SSL_CTX]* ctx,
    int alg);
----

== Return Value

1 on success, or 0 on failure (including when `ctx` is a client context).

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| Server SSL context whose certificates are compressed.
| *alg*
| Compression algorithm identifier, or 0 to use each algorithm in the preference list.
|===


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