Merge pull request #3654 from 36952362/master

Resolve the issue of incomplete transmission of large SIP message over TLS protocol

(cherry picked from commit 0c54ee7)

Author: bogdan-iancu

modules/proto_tls/proto_tls.c

@@ -618,7 +618,7 @@ static int proto_tls_send(const struct socket_info* send_sock,
 	send_sock->last_real_ports->local = c->rcv.dst_port;
 	send_sock->last_real_ports->remote = c->rcv.src_port;
 
-	tcp_conn_release(c, 0);
+	tcp_conn_release(c, (rlen<len)?1:0);
 	return rlen;
 con_release:
 	sh_log(c->hist, TCP_SEND2MAIN, "send 1, (%d)", c->refcnt);