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Current Path: /opt/golang/1.22.0/src/net

📁 ..
📄 addrselect.go(9.69 KB)
📄 addrselect_test.go(8.5 KB)
📄 cgo_aix.go(582 B)
📄 cgo_android.go(272 B)
📄 cgo_bsd.go(343 B)
📄 cgo_darwin.go(298 B)
📄 cgo_linux.go(642 B)
📄 cgo_netbsd.go(276 B)
📄 cgo_openbsd.go(276 B)
📄 cgo_resnew.go(580 B)
📄 cgo_resold.go(579 B)
📄 cgo_socknew.go(753 B)
📄 cgo_sockold.go(842 B)
📄 cgo_solaris.go(343 B)
📄 cgo_stub.go(1.33 KB)
📄 cgo_unix.go(11.35 KB)
📄 cgo_unix_cgo.go(2.24 KB)
📄 cgo_unix_cgo_darwin.go(461 B)
📄 cgo_unix_cgo_res.go(911 B)
📄 cgo_unix_cgo_resn.go(998 B)
📄 cgo_unix_syscall.go(2.99 KB)
📄 cgo_unix_test.go(1.44 KB)
📄 conf.go(15.63 KB)
📄 conf_test.go(12.28 KB)
📄 conn_test.go(1.82 KB)
📄 dial.go(25.68 KB)
📄 dial_test.go(30.14 KB)
📄 dial_unix_test.go(2.77 KB)
📄 dnsclient.go(5.65 KB)
📄 dnsclient_test.go(1.51 KB)
📄 dnsclient_unix.go(24.26 KB)
📄 dnsclient_unix_test.go(69.13 KB)
📄 dnsconfig.go(1.73 KB)
📄 dnsconfig_unix.go(4.16 KB)
📄 dnsconfig_unix_test.go(7.07 KB)
📄 dnsconfig_windows.go(1.6 KB)
📄 dnsname_test.go(1.96 KB)
📄 error_plan9.go(224 B)
📄 error_plan9_test.go(437 B)
📄 error_posix.go(543 B)
📄 error_posix_test.go(981 B)
📄 error_test.go(20.32 KB)
📄 error_unix.go(382 B)
📄 error_unix_test.go(723 B)
📄 error_windows.go(355 B)
📄 error_windows_test.go(757 B)
📄 example_test.go(8.45 KB)
📄 external_test.go(4.05 KB)
📄 fd_fake.go(3.79 KB)
📄 fd_js.go(627 B)
📄 fd_plan9.go(3.56 KB)
📄 fd_posix.go(4.29 KB)
📄 fd_unix.go(5.43 KB)
📄 fd_wasip1.go(496 B)
📄 fd_windows.go(6.14 KB)
📄 file.go(1.69 KB)
📄 file_plan9.go(2.72 KB)
📄 file_stub.go(481 B)
📄 file_test.go(6.43 KB)
📄 file_unix.go(2.5 KB)
📄 file_unix_test.go(2.07 KB)
📄 file_wasip1.go(2.2 KB)
📄 file_wasip1_test.go(3.76 KB)
📄 file_windows.go(521 B)
📄 hook.go(894 B)
📄 hook_plan9.go(211 B)
📄 hook_unix.go(658 B)
📄 hook_windows.go(720 B)
📄 hosts.go(3.48 KB)
📄 hosts_test.go(5.6 KB)
📁 http
📄 interface.go(7.26 KB)
📄 interface_aix.go(4.46 KB)
📄 interface_bsd.go(2.82 KB)
📄 interface_bsd_test.go(1.44 KB)
📄 interface_bsdvar.go(718 B)
📄 interface_darwin.go(1.29 KB)
📄 interface_freebsd.go(1.29 KB)
📄 interface_linux.go(6.96 KB)
📄 interface_linux_test.go(3.65 KB)
📄 interface_plan9.go(4.71 KB)
📄 interface_solaris.go(2.13 KB)
📄 interface_stub.go(814 B)
📄 interface_test.go(9.76 KB)
📄 interface_unix_test.go(4.85 KB)
📄 interface_windows.go(5.43 KB)
📁 internal
📄 ip.go(13.88 KB)
📄 ip_test.go(25.6 KB)
📄 iprawsock.go(7.11 KB)
📄 iprawsock_plan9.go(874 B)
📄 iprawsock_posix.go(3.89 KB)
📄 iprawsock_test.go(5.98 KB)
📄 ipsock.go(9.05 KB)
📄 ipsock_plan9.go(7.48 KB)
📄 ipsock_plan9_test.go(645 B)
📄 ipsock_posix.go(7.86 KB)
📄 ipsock_test.go(6.81 KB)
📄 listen_test.go(20.5 KB)
📄 lookup.go(29.04 KB)
📄 lookup_plan9.go(9.94 KB)
📄 lookup_test.go(40.62 KB)
📄 lookup_unix.go(3.35 KB)
📄 lookup_windows.go(13.8 KB)
📄 lookup_windows_test.go(8.93 KB)
📄 mac.go(1.88 KB)
📄 mac_test.go(3.26 KB)
📁 mail
📄 main_cloexec_test.go(693 B)
📄 main_conf_test.go(1.39 KB)
📄 main_noconf_test.go(467 B)
📄 main_plan9_test.go(392 B)
📄 main_posix_test.go(1.37 KB)
📄 main_test.go(7.53 KB)
📄 main_unix_test.go(1.19 KB)
📄 main_wasm_test.go(284 B)
📄 main_windows_test.go(1 KB)
📄 mockserver_test.go(10.77 KB)
📄 mptcpsock_linux.go(3.96 KB)
📄 mptcpsock_linux_test.go(4.06 KB)
📄 mptcpsock_stub.go(542 B)
📄 net.go(24.56 KB)
📄 net_fake.go(26.36 KB)
📄 net_fake_test.go(2.79 KB)
📄 net_test.go(14 KB)
📄 net_windows_test.go(16.28 KB)
📄 netcgo_off.go(222 B)
📄 netcgo_on.go(220 B)
📄 netgo_netcgo.go(453 B)
📄 netgo_off.go(220 B)
📄 netgo_on.go(218 B)
📁 netip
📄 nss.go(5.48 KB)
📄 nss_test.go(3.4 KB)
📄 packetconn_test.go(3.02 KB)
📄 parse.go(6.04 KB)
📄 parse_test.go(1.55 KB)
📄 pipe.go(5.43 KB)
📄 pipe_test.go(1.2 KB)
📄 platform_test.go(4.33 KB)
📄 port.go(1.46 KB)
📄 port_test.go(1.34 KB)
📄 port_unix.go(1.24 KB)
📄 protoconn_test.go(7.44 KB)
📄 rawconn.go(2.7 KB)
📄 rawconn_stub_test.go(631 B)
📄 rawconn_test.go(4.33 KB)
📄 rawconn_unix_test.go(2.96 KB)
📄 rawconn_windows_test.go(3.12 KB)
📄 resolverdialfunc_test.go(8.25 KB)
📄 rlimit_js.go(346 B)
📄 rlimit_unix.go(1.1 KB)
📁 rpc
📄 sendfile_linux.go(1.12 KB)
📄 sendfile_linux_test.go(1.93 KB)
📄 sendfile_stub.go(344 B)
📄 sendfile_test.go(8.25 KB)
📄 sendfile_unix_alt.go(2.04 KB)
📄 sendfile_windows.go(1.02 KB)
📄 server_test.go(11.67 KB)
📁 smtp
📄 sock_bsd.go(918 B)
📄 sock_cloexec.go(1.38 KB)
📄 sock_linux.go(993 B)
📄 sock_linux_test.go(575 B)
📄 sock_plan9.go(262 B)
📄 sock_posix.go(6.29 KB)
📄 sock_stub.go(390 B)
📄 sock_windows.go(802 B)
📄 sockaddr_posix.go(1.45 KB)
📄 sockopt_aix.go(1.43 KB)
📄 sockopt_bsd.go(2.21 KB)
📄 sockopt_fake.go(955 B)
📄 sockopt_linux.go(1.25 KB)
📄 sockopt_plan9.go(406 B)
📄 sockopt_posix.go(2.13 KB)
📄 sockopt_solaris.go(1.25 KB)
📄 sockopt_windows.go(1.51 KB)
📄 sockoptip_bsdvar.go(867 B)
📄 sockoptip_linux.go(735 B)
📄 sockoptip_posix.go(1.38 KB)
📄 sockoptip_stub.go(769 B)
📄 sockoptip_windows.go(786 B)
📄 splice_linux.go(1.69 KB)
📄 splice_stub.go(376 B)
📄 splice_test.go(13.48 KB)
📄 sys_cloexec.go(962 B)
📄 tcpsock.go(11.75 KB)
📄 tcpsock_plan9.go(2.18 KB)
📄 tcpsock_posix.go(6.16 KB)
📄 tcpsock_test.go(17.68 KB)
📄 tcpsock_unix_test.go(2.34 KB)
📄 tcpsockopt_darwin.go(770 B)
📄 tcpsockopt_dragonfly.go(698 B)
📄 tcpsockopt_openbsd.go(365 B)
📄 tcpsockopt_plan9.go(525 B)
📄 tcpsockopt_posix.go(442 B)
📄 tcpsockopt_solaris.go(1.15 KB)
📄 tcpsockopt_stub.go(399 B)
📄 tcpsockopt_unix.go(722 B)
📄 tcpsockopt_windows.go(741 B)
📁 testdata
📁 textproto
📄 timeout_test.go(29.11 KB)
📄 udpsock.go(11.83 KB)
📄 udpsock_plan9.go(4.64 KB)
📄 udpsock_plan9_test.go(1.31 KB)
📄 udpsock_posix.go(7.53 KB)
📄 udpsock_test.go(17.24 KB)
📄 unixsock.go(10.12 KB)
📄 unixsock_linux_test.go(2.29 KB)
📄 unixsock_plan9.go(1.24 KB)
📄 unixsock_posix.go(6.64 KB)
📄 unixsock_readmsg_cloexec.go(654 B)
📄 unixsock_readmsg_cmsg_cloexec.go(332 B)
📄 unixsock_readmsg_other.go(275 B)
📄 unixsock_readmsg_test.go(2.51 KB)
📄 unixsock_test.go(10.64 KB)
📄 unixsock_windows_test.go(2.03 KB)
📁 url
📄 write_unix_test.go(1.61 KB)
📄 writev_test.go(5.03 KB)
📄 writev_unix.go(666 B)

Editing: mptcpsock_linux_test.go

// Copyright 2023 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 (
	"bytes"
	"context"
	"errors"
	"syscall"
	"testing"
)

func newLocalListenerMPTCP(t *testing.T, envVar bool) Listener {
	lc := &ListenConfig{}

if envVar {
		if !lc.MultipathTCP() {
			t.Fatal("MultipathTCP Listen is not on despite GODEBUG=multipathtcp=1")
		}
	} else {
		if lc.MultipathTCP() {
			t.Error("MultipathTCP should be off by default")
		}

lc.SetMultipathTCP(true)
		if !lc.MultipathTCP() {
			t.Fatal("MultipathTCP is not on after having been forced to on")
		}
	}

ln, err := lc.Listen(context.Background(), "tcp", "127.0.0.1:0")
	if err != nil {
		t.Fatal(err)
	}
	return ln
}

func postAcceptMPTCP(ls *localServer, ch chan<- error) {
	defer close(ch)

if len(ls.cl) == 0 {
		ch <- errors.New("no accepted stream")
		return
	}

c := ls.cl[0]

tcp, ok := c.(*TCPConn)
	if !ok {
		ch <- errors.New("struct is not a TCPConn")
		return
	}

mptcp, err := tcp.MultipathTCP()
	if err != nil {
		ch <- err
		return
	}

if !mptcp {
		ch <- errors.New("incoming connection is not with MPTCP")
		return
	}

// Also check the method for the older kernels if not tested before
	if hasSOLMPTCP && !isUsingMPTCPProto(tcp.fd) {
		ch <- errors.New("incoming connection is not an MPTCP proto")
		return
	}
}

func dialerMPTCP(t *testing.T, addr string, envVar bool) {
	d := &Dialer{}

if envVar {
		if !d.MultipathTCP() {
			t.Fatal("MultipathTCP Dialer is not on despite GODEBUG=multipathtcp=1")
		}
	} else {
		if d.MultipathTCP() {
			t.Error("MultipathTCP should be off by default")
		}

d.SetMultipathTCP(true)
		if !d.MultipathTCP() {
			t.Fatal("MultipathTCP is not on after having been forced to on")
		}
	}

c, err := d.Dial("tcp", addr)
	if err != nil {
		t.Fatal(err)
	}
	defer c.Close()

tcp, ok := c.(*TCPConn)
	if !ok {
		t.Fatal("struct is not a TCPConn")
	}

// Transfer a bit of data to make sure everything is still OK
	snt := []byte("MPTCP TEST")
	if _, err := c.Write(snt); err != nil {
		t.Fatal(err)
	}
	b := make([]byte, len(snt))
	if _, err := c.Read(b); err != nil {
		t.Fatal(err)
	}
	if !bytes.Equal(snt, b) {
		t.Errorf("sent bytes (%s) are different from received ones (%s)", snt, b)
	}

mptcp, err := tcp.MultipathTCP()
	if err != nil {
		t.Fatal(err)
	}

t.Logf("outgoing connection from %s with mptcp: %t", addr, mptcp)

if !mptcp {
		t.Error("outgoing connection is not with MPTCP")
	}

// Also check the method for the older kernels if not tested before
	if hasSOLMPTCP && !isUsingMPTCPProto(tcp.fd) {
		t.Error("outgoing connection is not an MPTCP proto")
	}
}

func canCreateMPTCPSocket() bool {
	// We want to know if we can create an MPTCP socket, not just if it is
	// available (mptcpAvailable()): it could be blocked by the admin
	fd, err := syscall.Socket(syscall.AF_INET, syscall.SOCK_STREAM, _IPPROTO_MPTCP)
	if err != nil {
		return false
	}

syscall.Close(fd)
	return true
}

func testMultiPathTCP(t *testing.T, envVar bool) {
	if envVar {
		t.Log("Test with GODEBUG=multipathtcp=1")
		t.Setenv("GODEBUG", "multipathtcp=1")
	} else {
		t.Log("Test with GODEBUG=multipathtcp=0")
		t.Setenv("GODEBUG", "multipathtcp=0")
	}

ln := newLocalListenerMPTCP(t, envVar)

// similar to tcpsock_test:TestIPv6LinkLocalUnicastTCP
	ls := (&streamListener{Listener: ln}).newLocalServer()
	defer ls.teardown()

if g, w := ls.Listener.Addr().Network(), "tcp"; g != w {
		t.Fatalf("Network type mismatch: got %q, want %q", g, w)
	}

genericCh := make(chan error)
	mptcpCh := make(chan error)
	handler := func(ls *localServer, ln Listener) {
		ls.transponder(ln, genericCh)
		postAcceptMPTCP(ls, mptcpCh)
	}
	if err := ls.buildup(handler); err != nil {
		t.Fatal(err)
	}

dialerMPTCP(t, ln.Addr().String(), envVar)

if err := <-genericCh; err != nil {
		t.Error(err)
	}
	if err := <-mptcpCh; err != nil {
		t.Error(err)
	}
}

func TestMultiPathTCP(t *testing.T) {
	if !canCreateMPTCPSocket() {
		t.Skip("Cannot create MPTCP sockets")
	}

for _, envVar := range []bool{false, true} {
		testMultiPathTCP(t, envVar)
	}
}

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Editing: mptcpsock_linux_test.go

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