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SSL_CTX_set_mode(3) OpenSSL SSL_CTX_set_mode(3)
SSL_CTX_set_mode, SSL_set_mode, SSL_CTX_get_mode, SSL_get_mode - manip-
ulate SSL engine mode
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);
SSL_CTX_set_mode() adds the mode set via bitmask in mode to ctx.
Options already set before are not cleared.
SSL_set_mode() adds the mode set via bitmask in mode to ssl. Options
already set before are not cleared.
SSL_CTX_get_mode() returns the mode set for ctx.
SSL_get_mode() returns the mode set for ssl.
The following mode changes are available:
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 com-
plete 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
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().
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 environ-
ment applications must be prepared to handle incomplete read/write
operations. In a blocking environment, applications are not always
prepared to deal with read/write operations returning without suc-
cess report. The flag SSL_MODE_AUTO_RETRY will cause read/write
operations to only return after the handshake and successful com-
SSL_CTX_set_mode() and SSL_set_mode() return the new mode bitmask after
SSL_CTX_get_mode() and SSL_get_mode() return the current bitmask.
ssl(3), SSL_read(3), SSL_write(3)
SSL_MODE_AUTO_RETRY as been added in OpenSSL 0.9.6.
0.9.8e-rhel5 2001-07-11 SSL_CTX_set_mode(3)
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