From bcf75777c83adc371ba56a88025d7c9c84178015 Mon Sep 17 00:00:00 2001
From: nexcvon <nexcvon@users.noreply.github.com>
Date: Fri, 3 Mar 2017 19:00:58 +0800
Subject: [PATCH] Problem: Assertion failed in zmq::signaler_t::send

Solution: Change to the way it does below on non-Windows platforms, retry when send returns -1.
---
 src/signaler.cpp | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/signaler.cpp b/src/signaler.cpp
index 5a0b8ddcee..e6ba826bce 100644
--- a/src/signaler.cpp
+++ b/src/signaler.cpp
@@ -187,9 +187,13 @@ void zmq::signaler_t::send ()
     errno_assert (sz == sizeof (inc));
 #elif defined ZMQ_HAVE_WINDOWS
     unsigned char dummy = 0;
-    int nbytes = ::send (w, (char *) &dummy, sizeof (dummy), 0);
-    wsa_assert (nbytes != SOCKET_ERROR);
-    zmq_assert (nbytes == sizeof (dummy));
+    while (true) {
+        int nbytes = ::send (w, (char*) &dummy, sizeof (dummy), 0);
+        if (unlikely (nbytes == SOCKET_ERROR))
+            continue;
+        zmq_assert (nbytes == sizeof (dummy));
+        break;
+    }
 #else
     unsigned char dummy = 0;
     while (true) {