Manual Pages for UNIX Operating System command usage for man SSL_want

OpenSSL                                        SSL_want(3openssl)



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     SSL_want, SSL_want_nothing, SSL_want_read, SSL_want_write,
     SSL_want_x509_lookup - obtain state information TLS/SSL I/O
     operation

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      #include 

      int SSL_want(const SSL *ssl);
      int SSL_want_nothing(const SSL *ssl);
      int SSL_want_read(const SSL *ssl);
      int SSL_want_write(const SSL *ssl);
      int SSL_want_x509_lookup(const SSL *ssl);


DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
     SSL_want() returns state information for the SSL object ssssssssllll.

     The other SSL_want_*() calls are shortcuts for the possible
     states returned by SSL_want().

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     SSL_want() examines the internal state information of the
     SSL object. Its return values are similar to that of
     SSL_get_error(3).  Unlike SSL_get_error(3), which also
     evaluates the error queue, the results are obtained by
     examining an internal state flag only. The information must
     therefore only be used for normal operation under non-
     blocking I/O. Error conditions are not handled and must be
     treated using SSL_get_error(3).

     The result returned by SSL_want() should always be
     consistent with the result of SSL_get_error(3).

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     The following return values can currently occur for
     SSL_want():

     SSL_NOTHING
         There is no data to be written or to be read.

     SSL_WRITING
         There are data in the SSL buffer that must be written to
         the underlying BBBBIIIIOOOO layer in order to complete the actual
         SSL_*() operation.  A call to SSL_get_error(3) should
         return SSL_ERROR_WANT_WRITE.

     SSL_READING
         More data must be read from the underlying BBBBIIIIOOOO layer in
         order to complete the actual SSL_*() operation.  A call
         to SSL_get_error(3) should return SSL_ERROR_WANT_READ.




30/Mar/2005            Last change: 0.9.8o                      1






OpenSSL                                        SSL_want(3openssl)



     SSL_X509_LOOKUP
         The operation did not complete because an application
         callback set by SSL_CTX_set_client_cert_cb() has asked
         to be called again.  A call to SSL_get_error(3) should
         return SSL_ERROR_WANT_X509_LOOKUP.

     SSL_want_nothing(), SSL_want_read(), SSL_want_write(),
     SSL_want_x509_lookup() return 1, when the corresponding
     condition is true or 0 otherwise.

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     ssl(3), err(3), SSL_get_error(3)











































30/Mar/2005            Last change: 0.9.8o                      2