From 74051c77dc3ec1548f8efedfd892a0b2ad3537ad Mon Sep 17 00:00:00 2001
From: Fabio Alessandrelli <fabio.alessandrelli@gmail.com>
Date: Fri, 6 Mar 2020 12:57:28 +0100
Subject: [PATCH] Add TCP poll function (not exposed).

Used to know if we can read or write without blocking.
---
 core/io/stream_peer_tcp.cpp | 5 +++++
 core/io/stream_peer_tcp.h   | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/core/io/stream_peer_tcp.cpp b/core/io/stream_peer_tcp.cpp
index 044431743a..f0c5816d73 100644
--- a/core/io/stream_peer_tcp.cpp
+++ b/core/io/stream_peer_tcp.cpp
@@ -288,6 +288,11 @@ void StreamPeerTCP::disconnect_from_host() {
 	peer_port = 0;
 }
 
+Error StreamPeerTCP::poll(NetSocket::PollType p_type, int timeout) {
+	ERR_FAIL_COND_V(_sock.is_null() || !_sock->is_open(), ERR_UNAVAILABLE);
+	return _sock->poll(p_type, timeout);
+}
+
 Error StreamPeerTCP::put_data(const uint8_t *p_data, int p_bytes) {
 
 	int total;
diff --git a/core/io/stream_peer_tcp.h b/core/io/stream_peer_tcp.h
index f16d4a2bd4..327aa3cc3b 100644
--- a/core/io/stream_peer_tcp.h
+++ b/core/io/stream_peer_tcp.h
@@ -78,6 +78,9 @@ public:
 
 	void set_no_delay(bool p_enabled);
 
+	// Poll functions (wait or check for writable, readable)
+	Error poll(NetSocket::PollType p_type, int timeout = 0);
+
 	// Read/Write from StreamPeer
 	Error put_data(const uint8_t *p_data, int p_bytes);
 	Error put_partial_data(const uint8_t *p_data, int p_bytes, int &r_sent);