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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 - manipulate SSL engine
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 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().
Make it possible to retry SSL_write() with changed buffer location (the buffer con-
tents 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 renego-
tiation 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 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
SSL_CTX_set_mode() and SSL_set_mode() return the new mode bitmask after adding mode.
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.
0.9.7d 2002-12-01 SSL_CTX_set_mode(3)
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