Manual Pages for UNIX Operating System command usage for man SSL_CTX_set_mode

OpenSSL                                SSL_CTX_set_mode(3openssl)



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     SSL_CTX_set_mode, SSL_set_mode, SSL_CTX_get_mode,
     SSL_get_mode - manipulate SSL engine mode

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      #include 

      long SSL_CTX_set_mode(SSL_CTX *ctx, long mode);
      long SSL_set_mode(SSL *ssl, long mode);

      long SSL_CTX_get_mode(SSL_CTX *ctx);
      long SSL_get_mode(SSL *ssl);


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     SSL_CTX_set_mode() adds the mode set via bitmask in mmmmooooddddeeee to
     ccccttttxxxx.  Options already set before are not cleared.

     SSL_set_mode() adds the mode set via bitmask in mmmmooooddddeeee to ssssssssllll.
     Options already set before are not cleared.

     SSL_CTX_get_mode() returns the mode set for ccccttttxxxx.

     SSL_get_mode() returns the mode set for ssssssssllll.

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     The following mode changes are available:

     SSL_MODE_ENABLE_PARTIAL_WRITE
         Allow SSL_write(..., n) to return r with 0 < r < n (i.e.
         report success when just a single record has been
         written). When not set (the default), SSL_write() will
         only report success once the complete chunk was written.
         Once SSL_write() returns with r, r bytes have been
         successfully written and the next call to SSL_write()
         must only send the n-r bytes left, imitating the
         behaviour of write().

     SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER
         Make it possible to retry SSL_write() with changed
         buffer location (the buffer contents must stay the
         same). This is not the default to avoid the
         misconception that non-blocking SSL_write() behaves like
         non-blocking write().

     SSL_MODE_AUTO_RETRY
         Never bother the application with retries if the
         transport is blocking.  If a renegotiation take place
         during normal operation, a SSL_read(3) or SSL_write(3)
         would return with -1 and indicate the need to retry with
         SSL_ERROR_WANT_READ.  In a non-blocking environment
         applications must be prepared to handle incomplete



11/Jul/2001            Last change: 0.9.8o                      1






OpenSSL                                SSL_CTX_set_mode(3openssl)



         read/write operations.  In a blocking environment,
         applications are not always prepared to deal with
         read/write operations returning without success report.
         The flag SSL_MODE_AUTO_RETRY will cause read/write
         operations to only return after the handshake and
         successful completion.

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     SSL_CTX_set_mode() and SSL_set_mode() return the new mode
     bitmask after adding mmmmooooddddeeee.

     SSL_CTX_get_mode() and SSL_get_mode() return the current
     bitmask.

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     ssl(3), SSL_read(3), SSL_write(3)

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     SSL_MODE_AUTO_RETRY as been added in OpenSSL 0.9.6.




































11/Jul/2001            Last change: 0.9.8o                      2