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Added ssl_handshake_step() to allow single stepping the handshake

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process

Single stepping the handshake process allows for better support of
non-blocking network stacks and for getting information from specific
handshake messages if wanted.
This commit is contained in:
Paul Bakker 2013-01-25 14:49:24 +01:00
parent 9c94cddeae
commit 1961b709d8
5 changed files with 222 additions and 203 deletions
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18
include/polarssl/ssl.h
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@ -970,6 +970,20 @@ const x509_cert *ssl_get_peer_cert( const ssl_context *ssl );
*/
int ssl_handshake( ssl_context *ssl );
/**
* \brief Perform a single step of the SSL handshake
*
* Note: the state of the context (ssl->state) will be at
* the following state after execution of this function.
* Do not call this function if state is SSL_HANDSHAKE_OVER.
*
* \param ssl SSL context
*
* \return 0 if successful, POLARSSL_ERR_NET_WANT_READ,
* POLARSSL_ERR_NET_WANT_WRITE, or a specific SSL error code.
*/
int ssl_handshake_step( ssl_context *ssl );
/**
* \brief Perform an SSL renegotiation on the running connection
*
@ -1061,8 +1075,8 @@ void ssl_handshake_free( ssl_handshake_params *handshake );
/*
* Internal functions (do not call directly)
*/
int ssl_handshake_client( ssl_context *ssl );
int ssl_handshake_server( ssl_context *ssl );
int ssl_handshake_client_step( ssl_context *ssl );
int ssl_handshake_server_step( ssl_context *ssl );
void ssl_handshake_wrapup( ssl_context *ssl );
int ssl_send_fatal_handshake_failure( ssl_context *ssl );