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SSL_CTX_use_serverinfo

Section: OpenSSL (3)
Updated: 2017-05-25
Index Return to Main Contents
 

NAME

SSL_CTX_use_serverinfo, SSL_CTX_use_serverinfo_file - use serverinfo extension  

SYNOPSIS

 #include <openssl/ssl.h>

 int SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo,
                            size_t serverinfo_length);

 int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file);

 

DESCRIPTION

These functions load ``serverinfo'' TLS ServerHello Extensions into the SSL_CTX. A ``serverinfo'' extension is returned in response to an empty ClientHello Extension.

SSL_CTX_use_serverinfo() loads one or more serverinfo extensions from a byte array into ctx. The extensions must be concatenated into a sequence of bytes. Each extension must consist of a 2-byte Extension Type, a 2-byte length, and then length bytes of extension_data.

SSL_CTX_use_serverinfo_file() loads one or more serverinfo extensions from file into ctx. The extensions must be in PEM format. Each extension must consist of a 2-byte Extension Type, a 2-byte length, and then length bytes of extension_data. Each PEM extension name must begin with the phrase ``BEGIN SERVERINFO FOR ''.

If more than one certificate (RSA/DSA) is installed using SSL_CTX_use_certificate(), the serverinfo extension will be loaded into the last certificate installed. If e.g. the last item was a RSA certificate, the loaded serverinfo extension data will be loaded for that certificate. To use the serverinfo extension for multiple certificates, SSL_CTX_use_serverinfo() needs to be called multiple times, once after each time a certificate is loaded.  

NOTES

 

RETURN VALUES

On success, the functions return 1. On failure, the functions return 0. Check out the error stack to find out the reason.  

SEE ALSO

 

HISTORY


 

Index

NAME
SYNOPSIS
DESCRIPTION
NOTES
RETURN VALUES
SEE ALSO
HISTORY





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