libssh2_session_startup man page

libssh2_session_startup — begin transport layer


#include <libssh2.h>

int libssh2_session_startup(LIBSSH2_SESSION *session, int socket);


Starting in libssh2 version 1.2.8 this function is considered deprecated. Use libssh2_session_handshake(3) instead.

session - Session instance as returned by libssh2_session_init_ex(3)

socket - Connected socket descriptor. Typically a TCP connection though the protocol allows for any reliable transport and the library will attempt to use any berkeley socket.

Begin transport layer protocol negotiation with the connected host.

Return Value

Returns 0 on success, negative on failure.


LIBSSH2_ERROR_SOCKET_NONE - The socket is invalid.

LIBSSH2_ERROR_BANNER_SEND - Unable to send banner to remote host.

LIBSSH2_ERROR_KEX_FAILURE - >Encryption key exchange with the remote host failed.

LIBSSH2_ERROR_SOCKET_SEND - Unable to send data on socket.

LIBSSH2_ERROR_SOCKET_DISCONNECT - The socket was disconnected.

LIBSSH2_ERROR_PROTO - An invalid SSH protocol response was received on the socket.

LIBSSH2_ERROR_EAGAIN - Marked for non-blocking I/O but the call would block.

See Also

libssh2_session_free(3) libssh2_session_init_ex(3)


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