From c5b1de368a2425e5e94e3d2ae36abff06ac6c63c Mon Sep 17 00:00:00 2001
From: Pieter Hintjens <ph@imatix.com>
Date: Fri, 11 Sep 2015 13:46:02 -0400
Subject: [PATCH] Problem: code lets CLIENT connect to CLIENT

This has no sense IMO; people who need this can still use DEALER-DEALER.

Solution: let CLIENT talk only to SERVER.
---
 src/mechanism.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/mechanism.cpp b/src/mechanism.cpp
index a3eb9d4f..8dd7f104 100644
--- a/src/mechanism.cpp
+++ b/src/mechanism.cpp
@@ -74,7 +74,8 @@ const char *zmq::mechanism_t::socket_type_string (int socket_type) const
 {
     static const char *names [] = {"PAIR", "PUB", "SUB", "REQ", "REP",
                                    "DEALER", "ROUTER", "PULL", "PUSH",
-                                   "XPUB", "XSUB", "STREAM", "SERVER", "CLIENT"};
+                                   "XPUB", "XSUB", "STREAM", 
+                                   "SERVER", "CLIENT"};
     zmq_assert (socket_type >= 0 && socket_type <= 13);
     return names [socket_type];
 }
@@ -190,7 +191,7 @@ bool zmq::mechanism_t::check_socket_type (const std::string& type_) const
         case ZMQ_SERVER:
             return type_ == "CLIENT";
         case ZMQ_CLIENT:
-            return type_ == "CLIENT" || type_ == "SERVER";
+            return type_ == "SERVER";
         default:
             break;
     }