From 43a123c1ae6613b3efeed291fa552ecd909d3acf Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 16 Apr 2024 21:23:18 +0200 Subject: Adding upstream version 1.20.14. Signed-off-by: Daniel Baumann --- src/net/udpsock_plan9_test.go | 69 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 src/net/udpsock_plan9_test.go (limited to 'src/net/udpsock_plan9_test.go') diff --git a/src/net/udpsock_plan9_test.go b/src/net/udpsock_plan9_test.go new file mode 100644 index 0000000..3febfcc --- /dev/null +++ b/src/net/udpsock_plan9_test.go @@ -0,0 +1,69 @@ +// Copyright 2016 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package net + +import ( + "internal/testenv" + "runtime" + "testing" +) + +func TestListenMulticastUDP(t *testing.T) { + testenv.MustHaveExternalNetwork(t) + + ifcs, err := Interfaces() + if err != nil { + t.Skip(err.Error()) + } + if len(ifcs) == 0 { + t.Skip("no network interfaces found") + } + + var mifc *Interface + for _, ifc := range ifcs { + if ifc.Flags&FlagUp|FlagMulticast != FlagUp|FlagMulticast { + continue + } + mifc = &ifc + break + } + + if mifc == nil { + t.Skipf("no multicast interfaces found") + } + + c1, err := ListenMulticastUDP("udp4", mifc, &UDPAddr{IP: ParseIP("224.0.0.254")}) + if err != nil { + t.Fatalf("multicast not working on %s: %v", runtime.GOOS, err) + } + c1addr := c1.LocalAddr().(*UDPAddr) + if err != nil { + t.Fatal(err) + } + defer c1.Close() + + c2, err := ListenUDP("udp4", &UDPAddr{IP: IPv4zero, Port: 0}) + c2addr := c2.LocalAddr().(*UDPAddr) + if err != nil { + t.Fatal(err) + } + defer c2.Close() + + n, err := c2.WriteToUDP([]byte("data"), c1addr) + if err != nil { + t.Fatal(err) + } + if n != 4 { + t.Fatalf("got %d; want 4", n) + } + + n, err = c1.WriteToUDP([]byte("data"), c2addr) + if err != nil { + t.Fatal(err) + } + if n != 4 { + t.Fatalf("got %d; want 4", n) + } +} -- cgit v1.2.3