From e98bc8d7a6937c49670e601d09b0299fd8ae5165 Mon Sep 17 00:00:00 2001
From: Min RK <benjaminrk@gmail.com>
Date: Tue, 28 May 2024 11:11:33 +0200
Subject: [PATCH] lookup localhost ip in precompile bind

not all versions of libzmq support binding to a hostname
---
 src/ZMQ.jl | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/ZMQ.jl b/src/ZMQ.jl
index 71d3097..3bf8118 100644
--- a/src/ZMQ.jl
+++ b/src/ZMQ.jl
@@ -58,12 +58,14 @@ import PrecompileTools: @compile_workload
 
     s2=Socket(REQ)
 
-    ZMQ.bind(s1, "tcp://localhost:*")
+    # zmq < 4.3.5 can only bind to ip address or network interface, not hostname
+    localhost_ip = Sockets.getaddrinfo("localhost", Sockets.IPv4)
+    ZMQ.bind(s1, "tcp://$(localhost_ip):*")
     # Strip the trailing null-terminator
     last_endpoint = s1.last_endpoint[1:end - 1]
     # Parse the port from the endpoint
     port = parse(Int, split(last_endpoint, ":")[end])
-    ZMQ.connect(s2, "tcp://localhost:$(port)")
+    ZMQ.connect(s2, "tcp://$(localhost_ip):$(port)")
 
     msg = Message("test request")