SSL_set_connect_state

SSL_SET_CONNECT_STATE(3)  BSD Library Functions Manual  SSL_SET_CONNECT_STATE(3)

NAME
     SSL_set_connect_state, SSL_set_accept_state, SSL_is_server — prepare SSL
     object to work in client or server mode

SYNOPSIS
     #include <openssl/ssl.h>

     void
     SSL_set_connect_state(SSL *ssl);

     void
     SSL_set_accept_state(SSL *ssl);

     int
     SSL_is_server(const SSL *ssl);

DESCRIPTION
     SSL_set_connect_state() sets ssl to work in client mode.

     SSL_set_accept_state() sets ssl to work in server mode.

     SSL_is_server() checks whether ssl is set to server mode.

     When the SSL_CTX object was created with SSL_CTX_new(3), it was either
     assigned a dedicated client method, a dedicated server method, or a generic
     method, that can be used for both client and server connections.  (The
     method might have been changed with SSL_CTX_set_ssl_version(3) or
     SSL_set_ssl_method(3).)

     When beginning a new handshake, the SSL engine must know whether it must
     call the connect (client) or accept (server) routines.  Even though it may
     be clear from the method chosen whether client or server mode was
     requested, the handshake routines must be explicitly set.

     When using the SSL_connect(3) or SSL_accept(3) routines, the correct
     handshake routines are automatically set.  When performing a transparent
     negotiation using SSL_write(3) or SSL_read(3), the handshake routines must
     be explicitly set in advance using either SSL_set_connect_state() or
     SSL_set_accept_state().

     If SSL_is_server() is called before SSL_set_connect_state() or
     SSL_set_accept_state() was called either automatically or explicitly, the
     result depends on what method was used when the SSL_CTX was created.  If a
     generic method or a dedicated server method was passed to SSL_CTX_new(3),
     SSL_is_server() returns 1; otherwise, it returns 0.

RETURN VALUES
     SSL_is_server() returns 1 if ssl is set to server mode or 0 if it is set to
     client mode.

SEE ALSO
     ssl(3), SSL_accept(3), SSL_connect(3), SSL_CTX_new(3),
     SSL_CTX_set_ssl_version(3), SSL_do_handshake(3), SSL_new(3), SSL_read(3),
     SSL_write(3)

HISTORY
     SSL_set_connect_state() and SSL_set_accept_state() first appeared in SSLeay
     0.6.0 and have been available since OpenBSD 2.4.

     SSL_is_server() first appeared in OpenSSL 1.0.2 and has been available
     since OpenBSD 6.3.

BSD                              March 27, 2018                              BSD