[#SSL_CTX_get1_compressed_cert]
= SSL_CTX_get1_compressed_cert
:mrdocs:

Get a copy of a compressed certificate configured on an SSL_CTX.

== Synopsis

Declared in `<openssl/ssl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
size_t
SSL_CTX_get1_compressed_cert(
    xref:SSL_CTX.adoc[SSL_CTX]* ctx,
    int alg,
    unsigned char** data,
    size_t* orig_len);
----

== Return Value

Length of *`data` in bytes, or 0 if unavailable / on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *ctx*
| SSL context that may hold compressed certificates.
| *alg*
| Compression algorithm identifier (TLSEXT_comp_cert_*).
| *data*
| Receives a newly allocated compressed certificate buffer (caller frees with OPENSSL_free).
| *orig_len*
| Receives the uncompressed certificate length in bytes.
|===


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