From 5364a1b45e79c605d5e5f02b2b57b5a7fe75636c Mon Sep 17 00:00:00 2001
From: Nikias Bassen
Date: Mon, 18 May 2020 20:10:50 +0200
Subject: socket: Make sure fd is ready to write before calling send()

---
 common/socket.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/common/socket.c b/common/socket.c
index cf6e9eb..a47de2a 100644
--- a/common/socket.c
+++ b/common/socket.c
@@ -690,6 +690,10 @@ int socket_receive_timeout(int fd, void *data, size_t length, int flags,
 int socket_send(int fd, void *data, size_t length)
 {
 	int flags = 0;
+	int res = socket_check_fd(fd, FDM_WRITE, 1000);
+	if (res <= 0) {
+		return res;
+	}
 #ifdef MSG_NOSIGNAL
 	flags |= MSG_NOSIGNAL;
 #endif
-- 
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