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RedHat 9 (Linux i386) - man page for ssl_set_mode (redhat section 3)

SSL_CTX_set_mode(3)						      OpenSSL						       SSL_CTX_set_mode(3)

NAME
SSL_CTX_set_mode, SSL_set_mode, SSL_CTX_get_mode, SSL_get_mode - manipulate SSL engine mode
SYNOPSIS
#include <openssl/ssl.h> 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);
DESCRIPTION
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.
NOTES
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 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 success report. The flag SSL_MODE_AUTO_RETRY will cause read/write opera- tions to only return after the handshake and successful completion.
RETURN VALUES
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.
SEE ALSO
ssl(3), SSL_read(3), SSL_write(3)
HISTORY
SSL_MODE_AUTO_RETRY as been added in OpenSSL 0.9.6. 0.9.7a 2001-07-11 SSL_CTX_set_mode(3)

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