/** \internal
* \brief starts a nonblocking flush of the output buffer
*
*/
int ssh_socket_nonblocking_flush(ssh_socket s) {
ssh_session session = s->session;
uint32_t len;
int w;
enter_function();
if (!ssh_socket_is_open(s)) {
session->alive = 0;
/* FIXME use ssh_socket_get_errno */
ssh_set_error(session, SSH_FATAL,
"Writing packet: error on socket (or connection closed): %s",
strerror(s->last_errno));
leave_function();
return SSH_ERROR;
}
len = buffer_get_rest_len(s->out_buffer);
if (!s->write_wontblock && s->poll_out && len > 0) {
/* force the poll system to catch pollout events */
ssh_poll_add_events(s->poll_out, POLLOUT);
leave_function();
return SSH_AGAIN;
}
if (s->write_wontblock && len > 0) {
w = ssh_socket_unbuffered_write(s, buffer_get_rest(s->out_buffer), len);
if (w < 0) {
session->alive = 0;
ssh_socket_close(s);
/* FIXME use ssh_socket_get_errno() */
/* FIXME use callback for errors */
ssh_set_error(session, SSH_FATAL,
"Writing packet: error on socket (or connection closed): %s",
strerror(s->last_errno));
leave_function();
return SSH_ERROR;
}
buffer_pass_bytes(s->out_buffer, w);
}
/* Is there some data pending? */
len = buffer_get_rest_len(s->out_buffer);
if (s->poll_out && len > 0) {
/* force the poll system to catch pollout events */
ssh_poll_add_events(s->poll_out, POLLOUT);
leave_function();
return SSH_AGAIN;
}
/* all data written */
leave_function();
return SSH_OK;
}
/** \internal
* \brief starts a nonblocking flush of the output buffer
*
*/
int ssh_socket_nonblocking_flush(ssh_socket s) {
ssh_session session = s->session;
uint32_t len;
int w;
if (!ssh_socket_is_open(s)) {
session->alive = 0;
if(s->callbacks && s->callbacks->exception){
s->callbacks->exception(
SSH_SOCKET_EXCEPTION_ERROR,
s->last_errno,s->callbacks->userdata);
}else{
ssh_set_error(session, SSH_FATAL,
"Writing packet: error on socket (or connection closed): %s",
strerror(s->last_errno));
}
return SSH_ERROR;
}
len = ssh_buffer_get_len(s->out_buffer);
if (!s->write_wontblock && s->poll_out && len > 0) {
/* force the poll system to catch pollout events */
ssh_poll_add_events(s->poll_out, POLLOUT);
return SSH_AGAIN;
}
if (s->write_wontblock && len > 0) {
w = ssh_socket_unbuffered_write(s, ssh_buffer_get(s->out_buffer), len);
if (w < 0) {
session->alive = 0;
ssh_socket_close(s);
if(s->callbacks && s->callbacks->exception){
s->callbacks->exception(
SSH_SOCKET_EXCEPTION_ERROR,
s->last_errno,s->callbacks->userdata);
}else{
ssh_set_error(session, SSH_FATAL,
"Writing packet: error on socket (or connection closed): %s",
strerror(s->last_errno));
}
return SSH_ERROR;
}
ssh_buffer_pass_bytes(s->out_buffer, w);
if (s->session->socket_counter != NULL) {
s->session->socket_counter->out_bytes += w;
}
}
/* Is there some data pending? */
len = ssh_buffer_get_len(s->out_buffer);
if (s->poll_out && len > 0) {
/* force the poll system to catch pollout events */
ssh_poll_add_events(s->poll_out, POLLOUT);
return SSH_AGAIN;
}
/* all data written */
return SSH_OK;
}
