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SSL_connect(3SSL)                   OpenSSL                  SSL_connect(3SSL)

       SSL_connect - initiate the TLS/SSL handshake with an TLS/SSL server

        #include <openssl/ssl.h>

        int SSL_connect(SSL *ssl);

       SSL_connect() initiates the TLS/SSL handshake with a server. The
       communication channel must already have been set and assigned to the
       ssl by setting an underlying BIO.

       The behaviour of SSL_connect() depends on the underlying BIO.

       If the underlying BIO is blocking, SSL_connect() will only return once
       the handshake has been finished or an error occurred.

       If the underlying BIO is non-blocking, SSL_connect() will also return
       when the underlying BIO could not satisfy the needs of SSL_connect() to
       continue the handshake, indicating the problem by the return value -1.
       In this case a call to SSL_get_error() with the return value of
       SSL_connect() will yield SSL_ERROR_WANT_READ or SSL_ERROR_WANT_WRITE.
       The calling process then must repeat the call after taking appropriate
       action to satisfy the needs of SSL_connect().  The action depends on
       the underlying BIO. When using a non-blocking socket, nothing is to be
       done, but select() can be used to check for the required condition.
       When using a buffering BIO, like a BIO pair, data must be written into
       or retrieved out of the BIO before being able to continue.

       The following return values can occur:

       1.  The TLS/SSL handshake was successfully completed, a TLS/SSL
           connection has been established.

       2.  The TLS/SSL handshake was not successful but was shut down
           controlled and by the specifications of the TLS/SSL protocol. Call
           SSL_get_error() with the return value ret to find out the reason.

       3.  <0

           The TLS/SSL handshake was not successful, because a fatal error
           occurred either at the protocol level or a connection failure
           occurred. The shutdown was not clean. It can also occur of action
           is need to continue the operation for non-blocking BIOs. Call
           SSL_get_error() with the return value ret to find out the reason.

       SSL_get_error(3), SSL_accept(3), SSL_shutdown(3), ssl(3), bio(3),
       SSL_set_connect_state(3), SSL_do_handshake(3), SSL_CTX_new(3)

       Hey! The above document had some coding errors, which are explained

       Around line 49:
           You have '=item 0' instead of the expected '=item 2'

       Around line 55:
           Expected '=item 3'

0.9.8g                            2003-06-03                 SSL_connect(3SSL)

Time taken: 0.00061 seconds

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