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socket: Make sure we only transmit data if we have some.

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Signed-off-by: Andreas Schneider <asn@cynapses.org>
This commit is contained in:
milo
2010-08-08 23:00:23 +02:00
committed by Andreas Schneider
parent 2b108483ce
commit 06df7c1b31
1 changed files with 5 additions and 2 deletions
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7
libssh/socket.c
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@@ -511,8 +511,11 @@ void ssh_socket_fd_set(ssh_socket s, fd_set *set, socket_t *max_fd) {
int ssh_socket_write(ssh_socket s, const void *buffer, int len) {
ssh_session session = s->session;
enter_function();
if (buffer_add_data(s->out_buffer, buffer, len) < 0) {
return SSH_ERROR;
if(len > 0) {
if (buffer_add_data(s->out_buffer, buffer, len) < 0) {
return SSH_ERROR;
}
ssh_socket_set_towrite(s);
}
leave_function();
return SSH_OK;