@deftypefun {int} {gnutls_init} (gnutls_session_t * @var{session}, unsigned int @var{flags})
@var{session}: is a pointer to a @code{gnutls_session_t}  type.

@var{flags}: indicate if this session is to be used for server or client.

This function initializes the provided session. Every
session must be initialized before use, and must be deinitialized
after used by calling @code{gnutls_deinit()} .

 @code{flags} can be any combination of flags from @code{gnutls_init_flags_t} .

Note that since version 3.1.2 this function enables some common
TLS extensions such as session tickets and OCSP certificate status
request in client side by default. To prevent that use the @code{GNUTLS_NO_EXTENSIONS} 
flag.

@strong{Returns:} @code{GNUTLS_E_SUCCESS}  on success, or an error code.
@end deftypefun