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TLS_CLIENT(3)	      DragonFly Library Functions Manual	 TLS_CLIENT(3)


tls_client, tls_server, tls_configure, tls_reset, tls_free -- configure a TLS connection


#include <tls.h> struct tls * tls_client(void); struct tls * tls_server(void); int tls_configure(struct tls *ctx, struct tls_config *config); void tls_free(struct tls *ctx); void tls_reset(struct tls *ctx);


A TLS connection is represented as a struct tls object called a ``context''. A new context is created by either the tls_client() or tls_server() functions. tls_client() is used in TLS client programs, tls_server() in TLS server programs. The context can then be configured with the function tls_configure(). The same tls_config object can be used to configure multiple contexts. After configuration, tls_connect(3) can be called on objects created with tls_client(), and tls_accept_socket(3) on objects created with tls_server(). After use, a TLS context should be closed with tls_close(3), and then freed by calling tls_free(). If tls_free() is called with an argument of NULL, no action occurs. A TLS context can be reset by calling tls_reset(), allowing for it to be reused. This is essentially equivalent to calling tls_free(), followed by a call to the same function that was used to originally allocate the TLS context.


tls_client() and tls_server() return NULL on error or an out of memory condition. tls_configure() returns 0 on success or -1 on error.


tls_accept_socket(3), tls_config_new(3), tls_connect(3), tls_init(3)


These functions appeared in OpenBSD 5.6 and got their final names in OpenBSD 5.7.


Joel Sing <jsing@openbsd.org> DragonFly 5.5 August 12, 2017 DragonFly 5.5

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