Gecko [ waterstats.dev.bestseocompanymiami.com ]

Name	Size	Permission
http	[ DIR ]	drwxr-xr-x
internal	[ DIR ]	drwxr-xr-x
mail	[ DIR ]	drwxr-xr-x
netip	[ DIR ]	drwxr-xr-x
rpc	[ DIR ]	drwxr-xr-x
smtp	[ DIR ]	drwxr-xr-x
testdata	[ DIR ]	drwxr-xr-x
textproto	[ DIR ]	drwxr-xr-x
url	[ DIR ]	drwxr-xr-x
addrselect.go	9.69 KB	-rw-r--r--
addrselect_test.go	8.5 KB	-rw-r--r--
cgo_aix.go	582 B	-rw-r--r--
cgo_android.go	272 B	-rw-r--r--
cgo_bsd.go	343 B	-rw-r--r--
cgo_darwin.go	298 B	-rw-r--r--
cgo_linux.go	642 B	-rw-r--r--
cgo_netbsd.go	276 B	-rw-r--r--
cgo_openbsd.go	276 B	-rw-r--r--
cgo_resnew.go	580 B	-rw-r--r--
cgo_resold.go	579 B	-rw-r--r--
cgo_socknew.go	753 B	-rw-r--r--
cgo_sockold.go	842 B	-rw-r--r--
cgo_solaris.go	343 B	-rw-r--r--
cgo_stub.go	1.33 KB	-rw-r--r--
cgo_unix.go	11.42 KB	-rw-r--r--
cgo_unix_cgo.go	2.24 KB	-rw-r--r--
cgo_unix_cgo_res.go	892 B	-rw-r--r--
cgo_unix_cgo_resn.go	979 B	-rw-r--r--
cgo_unix_syscall.go	3 KB	-rw-r--r--
cgo_unix_test.go	1.44 KB	-rw-r--r--
conf.go	15.48 KB	-rw-r--r--
conf_test.go	12.29 KB	-rw-r--r--
conn_test.go	1.82 KB	-rw-r--r--
dial.go	26.85 KB	-rw-r--r--
dial_test.go	30.28 KB	-rw-r--r--
dial_unix_test.go	2.77 KB	-rw-r--r--
dnsclient.go	5.67 KB	-rw-r--r--
dnsclient_test.go	1.51 KB	-rw-r--r--
dnsclient_unix.go	24.66 KB	-rw-r--r--
dnsclient_unix_test.go	72.77 KB	-rw-r--r--
dnsconfig.go	2.19 KB	-rw-r--r--
dnsconfig_unix.go	4.12 KB	-rw-r--r--
dnsconfig_unix_test.go	7.07 KB	-rw-r--r--
dnsconfig_windows.go	1.61 KB	-rw-r--r--
dnsname_test.go	1.96 KB	-rw-r--r--
error_plan9.go	224 B	-rw-r--r--
error_plan9_test.go	437 B	-rw-r--r--
error_posix.go	543 B	-rw-r--r--
error_posix_test.go	981 B	-rw-r--r--
error_test.go	20.32 KB	-rw-r--r--
error_unix.go	382 B	-rw-r--r--
error_unix_test.go	723 B	-rw-r--r--
error_windows.go	355 B	-rw-r--r--
error_windows_test.go	757 B	-rw-r--r--
example_test.go	8.45 KB	-rw-r--r--
external_test.go	4.05 KB	-rw-r--r--
fd_fake.go	3.79 KB	-rw-r--r--
fd_js.go	627 B	-rw-r--r--
fd_plan9.go	3.56 KB	-rw-r--r--
fd_posix.go	4.29 KB	-rw-r--r--
fd_unix.go	5.43 KB	-rw-r--r--
fd_wasip1.go	496 B	-rw-r--r--
fd_windows.go	6.21 KB	-rw-r--r--
file.go	1.69 KB	-rw-r--r--
file_plan9.go	2.77 KB	-rw-r--r--
file_stub.go	481 B	-rw-r--r--
file_test.go	6.43 KB	-rw-r--r--
file_unix.go	2.55 KB	-rw-r--r--
file_unix_test.go	2.07 KB	-rw-r--r--
file_wasip1.go	2.2 KB	-rw-r--r--
file_wasip1_test.go	3.76 KB	-rw-r--r--
file_windows.go	521 B	-rw-r--r--
hook.go	934 B	-rw-r--r--
hook_plan9.go	211 B	-rw-r--r--
hook_unix.go	658 B	-rw-r--r--
hook_windows.go	720 B	-rw-r--r--
hosts.go	3.48 KB	-rw-r--r--
hosts_test.go	5.6 KB	-rw-r--r--
interface.go	7.57 KB	-rw-r--r--
interface_aix.go	4.46 KB	-rw-r--r--
interface_bsd.go	2.82 KB	-rw-r--r--
interface_bsd_test.go	1.44 KB	-rw-r--r--
interface_bsdvar.go	718 B	-rw-r--r--
interface_darwin.go	1.29 KB	-rw-r--r--
interface_freebsd.go	1.29 KB	-rw-r--r--
interface_linux.go	6.96 KB	-rw-r--r--
interface_linux_test.go	3.65 KB	-rw-r--r--
interface_plan9.go	4.74 KB	-rw-r--r--
interface_solaris.go	2.13 KB	-rw-r--r--
interface_stub.go	814 B	-rw-r--r--
interface_test.go	9.76 KB	-rw-r--r--
interface_unix_test.go	4.85 KB	-rw-r--r--
interface_windows.go	5.49 KB	-rw-r--r--
ip.go	13.97 KB	-rw-r--r--
ip_test.go	25.69 KB	-rw-r--r--
iprawsock.go	7.11 KB	-rw-r--r--
iprawsock_plan9.go	874 B	-rw-r--r--
iprawsock_posix.go	3.89 KB	-rw-r--r--
iprawsock_test.go	5.98 KB	-rw-r--r--
ipsock.go	9.43 KB	-rw-r--r--
ipsock_plan9.go	7.48 KB	-rw-r--r--
ipsock_plan9_test.go	645 B	-rw-r--r--
ipsock_posix.go	8.62 KB	-rw-r--r--
ipsock_test.go	6.81 KB	-rw-r--r--
listen_test.go	20.5 KB	-rw-r--r--
lookup.go	28.6 KB	-rw-r--r--
lookup_plan9.go	9.89 KB	-rw-r--r--
lookup_test.go	41.45 KB	-rw-r--r--
lookup_unix.go	3.35 KB	-rw-r--r--
lookup_windows.go	14.19 KB	-rw-r--r--
lookup_windows_test.go	8.7 KB	-rw-r--r--
mac.go	1.88 KB	-rw-r--r--
mac_test.go	3.26 KB	-rw-r--r--
main_cloexec_test.go	693 B	-rw-r--r--
main_conf_test.go	2.45 KB	-rw-r--r--
main_plan9_test.go	392 B	-rw-r--r--
main_posix_test.go	1.37 KB	-rw-r--r--
main_test.go	7.53 KB	-rw-r--r--
main_unix_test.go	1.19 KB	-rw-r--r--
main_wasm_test.go	284 B	-rw-r--r--
main_windows_test.go	1 KB	-rw-r--r--
mockserver_test.go	13.28 KB	-rw-r--r--
mptcpsock_linux.go	3.96 KB	-rw-r--r--
mptcpsock_linux_test.go	4.06 KB	-rw-r--r--
mptcpsock_stub.go	542 B	-rw-r--r--
net.go	27.12 KB	-rw-r--r--
net_fake.go	26.45 KB	-rw-r--r--
net_fake_test.go	2.79 KB	-rw-r--r--
net_test.go	13.3 KB	-rw-r--r--
net_windows_test.go	16.28 KB	-rw-r--r--
netcgo_off.go	222 B	-rw-r--r--
netcgo_on.go	220 B	-rw-r--r--
netgo_netcgo.go	453 B	-rw-r--r--
netgo_off.go	220 B	-rw-r--r--
netgo_on.go	218 B	-rw-r--r--
nss.go	5.48 KB	-rw-r--r--
nss_test.go	3.4 KB	-rw-r--r--
packetconn_test.go	3.02 KB	-rw-r--r--
parse.go	5.66 KB	-rw-r--r--
parse_test.go	1.65 KB	-rw-r--r--
pipe.go	5.43 KB	-rw-r--r--
pipe_test.go	1.2 KB	-rw-r--r--
platform_test.go	4.33 KB	-rw-r--r--
port.go	1.46 KB	-rw-r--r--
port_test.go	1.34 KB	-rw-r--r--
port_unix.go	1.24 KB	-rw-r--r--
protoconn_test.go	7.44 KB	-rw-r--r--
rawconn.go	2.7 KB	-rw-r--r--
rawconn_stub_test.go	631 B	-rw-r--r--
rawconn_test.go	4.33 KB	-rw-r--r--
rawconn_unix_test.go	2.96 KB	-rw-r--r--
rawconn_windows_test.go	3.12 KB	-rw-r--r--
resolverdialfunc_test.go	8.25 KB	-rw-r--r--
rlimit_js.go	346 B	-rw-r--r--
rlimit_unix.go	1.1 KB	-rw-r--r--
sendfile_linux.go	1.15 KB	-rw-r--r--
sendfile_stub.go	403 B	-rw-r--r--
sendfile_test.go	12.06 KB	-rw-r--r--
sendfile_unix_alt.go	2.27 KB	-rw-r--r--
sendfile_windows.go	1.05 KB	-rw-r--r--
server_test.go	11.67 KB	-rw-r--r--
sock_bsd.go	918 B	-rw-r--r--
sock_cloexec.go	730 B	-rw-r--r--
sock_cloexec_solaris.go	1.43 KB	-rw-r--r--
sock_linux.go	993 B	-rw-r--r--
sock_linux_test.go	575 B	-rw-r--r--
sock_plan9.go	262 B	-rw-r--r--
sock_posix.go	6.29 KB	-rw-r--r--
sock_stub.go	390 B	-rw-r--r--
sock_windows.go	802 B	-rw-r--r--
sockaddr_posix.go	1.45 KB	-rw-r--r--
sockopt_aix.go	1.43 KB	-rw-r--r--
sockopt_bsd.go	2.21 KB	-rw-r--r--
sockopt_fake.go	955 B	-rw-r--r--
sockopt_linux.go	1.25 KB	-rw-r--r--
sockopt_plan9.go	406 B	-rw-r--r--
sockopt_posix.go	2.13 KB	-rw-r--r--
sockopt_solaris.go	1.25 KB	-rw-r--r--
sockopt_windows.go	1.51 KB	-rw-r--r--
sockoptip_bsdvar.go	867 B	-rw-r--r--
sockoptip_linux.go	735 B	-rw-r--r--
sockoptip_posix.go	1.38 KB	-rw-r--r--
sockoptip_stub.go	769 B	-rw-r--r--
sockoptip_windows.go	786 B	-rw-r--r--
splice_linux.go	1.71 KB	-rw-r--r--
splice_linux_test.go	14.49 KB	-rw-r--r--
splice_stub.go	376 B	-rw-r--r--
sys_cloexec.go	962 B	-rw-r--r--
tcpconn_keepalive_conf_darwin_...	430 B	-rw-r--r--
tcpconn_keepalive_conf_posix_t...	1.55 KB	-rw-r--r--
tcpconn_keepalive_conf_solaris...	1.77 KB	-rw-r--r--
tcpconn_keepalive_conf_unix_te...	490 B	-rw-r--r--
tcpconn_keepalive_conf_windows...	987 B	-rw-r--r--
tcpconn_keepalive_illumos_test...	3.98 KB	-rw-r--r--
tcpconn_keepalive_posix_test.g...	2.52 KB	-rw-r--r--
tcpconn_keepalive_solaris_test...	5.67 KB	-rw-r--r--
tcpconn_keepalive_test.go	4.15 KB	-rw-r--r--
tcpsock.go	13.67 KB	-rw-r--r--
tcpsock_plan9.go	2.3 KB	-rw-r--r--
tcpsock_posix.go	6.27 KB	-rw-r--r--
tcpsock_solaris.go	1.32 KB	-rw-r--r--
tcpsock_test.go	17.68 KB	-rw-r--r--
tcpsock_unix.go	1.05 KB	-rw-r--r--
tcpsock_unix_test.go	2.34 KB	-rw-r--r--
tcpsock_windows.go	1.31 KB	-rw-r--r--
tcpsockopt_darwin.go	1.4 KB	-rw-r--r--
tcpsockopt_openbsd.go	759 B	-rw-r--r--
tcpsockopt_plan9.go	762 B	-rw-r--r--
tcpsockopt_posix.go	442 B	-rw-r--r--
tcpsockopt_solaris.go	3.35 KB	-rw-r--r--
tcpsockopt_stub.go	570 B	-rw-r--r--
tcpsockopt_unix.go	1.32 KB	-rw-r--r--
tcpsockopt_windows.go	3.76 KB	-rw-r--r--
timeout_test.go	30.01 KB	-rw-r--r--
udpsock.go	11.83 KB	-rw-r--r--
udpsock_plan9.go	4.64 KB	-rw-r--r--
udpsock_plan9_test.go	1.31 KB	-rw-r--r--
udpsock_posix.go	7.53 KB	-rw-r--r--
udpsock_test.go	17.24 KB	-rw-r--r--
unixsock.go	10.12 KB	-rw-r--r--
unixsock_linux_test.go	2.29 KB	-rw-r--r--
unixsock_plan9.go	1.24 KB	-rw-r--r--
unixsock_posix.go	6.64 KB	-rw-r--r--
unixsock_readmsg_cloexec.go	654 B	-rw-r--r--
unixsock_readmsg_cmsg_cloexec....	332 B	-rw-r--r--
unixsock_readmsg_other.go	275 B	-rw-r--r--
unixsock_readmsg_test.go	2.51 KB	-rw-r--r--
unixsock_test.go	10.64 KB	-rw-r--r--
unixsock_windows_test.go	1.83 KB	-rw-r--r--
write_unix_test.go	1.61 KB	-rw-r--r--
writev_test.go	5.03 KB	-rw-r--r--
writev_unix.go	666 B	-rw-r--r--

Code Editor : net_test.go

// Copyright 2009 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 (
	"errors"
	"fmt"
	"io"
	"net/internal/socktest"
	"os"
	"runtime"
	"testing"
	"time"
)

func TestCloseRead(t *testing.T) {
	switch runtime.GOOS {
	case "plan9":
		t.Skipf("not supported on %s", runtime.GOOS)
	}
	t.Parallel()

for _, network := range []string{"tcp", "unix", "unixpacket"} {
		network := network
		t.Run(network, func(t *testing.T) {
			if !testableNetwork(network) {
				t.Skipf("network %s is not testable on the current platform", network)
			}
			t.Parallel()

ln := newLocalListener(t, network)
			switch network {
			case "unix", "unixpacket":
				defer os.Remove(ln.Addr().String())
			}
			defer ln.Close()

c, err := Dial(ln.Addr().Network(), ln.Addr().String())
			if err != nil {
				t.Fatal(err)
			}
			switch network {
			case "unix", "unixpacket":
				defer os.Remove(c.LocalAddr().String())
			}
			defer c.Close()

switch c := c.(type) {
			case *TCPConn:
				err = c.CloseRead()
			case *UnixConn:
				err = c.CloseRead()
			}
			if err != nil {
				if perr := parseCloseError(err, true); perr != nil {
					t.Error(perr)
				}
				t.Fatal(err)
			}
			var b [1]byte
			n, err := c.Read(b[:])
			if n != 0 || err == nil {
				t.Fatalf("got (%d, %v); want (0, error)", n, err)
			}
		})
	}
}

func TestCloseWrite(t *testing.T) {
	switch runtime.GOOS {
	case "plan9":
		t.Skipf("not supported on %s", runtime.GOOS)
	}

t.Parallel()
	deadline, _ := t.Deadline()
	if !deadline.IsZero() {
		// Leave 10% headroom on the deadline to report errors and clean up.
		deadline = deadline.Add(-time.Until(deadline) / 10)
	}

handler := func(ls *localServer, ln Listener) {
				c, err := ln.Accept()
				if err != nil {
					t.Error(err)
					return
				}

// Workaround for https://go.dev/issue/49352.
				// On arm64 macOS (current as of macOS 12.4),
				// reading from a socket at the same time as the client
				// is closing it occasionally hangs for 60 seconds before
				// returning ECONNRESET. Sleep for a bit to give the
				// socket time to close before trying to read from it.
				if runtime.GOOS == "darwin" && runtime.GOARCH == "arm64" {
					time.Sleep(10 * time.Millisecond)
				}

if !deadline.IsZero() {
					c.SetDeadline(deadline)
				}
				defer c.Close()

var b [1]byte
				n, err := c.Read(b[:])
				if n != 0 || err != io.EOF {
					t.Errorf("got (%d, %v); want (0, io.EOF)", n, err)
					return
				}
				switch c := c.(type) {
				case *TCPConn:
					err = c.CloseWrite()
				case *UnixConn:
					err = c.CloseWrite()
				}
				if err != nil {
					if perr := parseCloseError(err, true); perr != nil {
						t.Error(perr)
					}
					t.Error(err)
					return
				}
				n, err = c.Write(b[:])
				if err == nil {
					t.Errorf("got (%d, %v); want (any, error)", n, err)
					return
				}
			}

ls := newLocalServer(t, network)
			defer ls.teardown()
			if err := ls.buildup(handler); err != nil {
				t.Fatal(err)
			}

c, err := Dial(ls.Listener.Addr().Network(), ls.Listener.Addr().String())
			if err != nil {
				t.Fatal(err)
			}
			if !deadline.IsZero() {
				c.SetDeadline(deadline)
			}
			switch network {
			case "unix", "unixpacket":
				defer os.Remove(c.LocalAddr().String())
			}
			defer c.Close()

switch c := c.(type) {
			case *TCPConn:
				err = c.CloseWrite()
			case *UnixConn:
				err = c.CloseWrite()
			}
			if err != nil {
				if perr := parseCloseError(err, true); perr != nil {
					t.Error(perr)
				}
				t.Fatal(err)
			}
			var b [1]byte
			n, err := c.Read(b[:])
			if n != 0 || err != io.EOF {
				t.Fatalf("got (%d, %v); want (0, io.EOF)", n, err)
			}
			n, err = c.Write(b[:])
			if err == nil {
				t.Fatalf("got (%d, %v); want (any, error)", n, err)
			}
		})
	}
}

func TestConnClose(t *testing.T) {
	t.Parallel()
	for _, network := range []string{"tcp", "unix", "unixpacket"} {
		network := network
		t.Run(network, func(t *testing.T) {
			if !testableNetwork(network) {
				t.Skipf("network %s is not testable on the current platform", network)
			}
			t.Parallel()

ln := newLocalListener(t, network)
			switch network {
			case "unix", "unixpacket":
				defer os.Remove(ln.Addr().String())
			}
			defer ln.Close()

if err := c.Close(); err != nil {
				if perr := parseCloseError(err, false); perr != nil {
					t.Error(perr)
				}
				t.Fatal(err)
			}
			var b [1]byte
			n, err := c.Read(b[:])
			if n != 0 || err == nil {
				t.Fatalf("got (%d, %v); want (0, error)", n, err)
			}
		})
	}
}

func TestListenerClose(t *testing.T) {
	t.Parallel()
	for _, network := range []string{"tcp", "unix", "unixpacket"} {
		network := network
		t.Run(network, func(t *testing.T) {
			if !testableNetwork(network) {
				t.Skipf("network %s is not testable on the current platform", network)
			}
			t.Parallel()

ln := newLocalListener(t, network)
			switch network {
			case "unix", "unixpacket":
				defer os.Remove(ln.Addr().String())
			}

if err := ln.Close(); err != nil {
				if perr := parseCloseError(err, false); perr != nil {
					t.Error(perr)
				}
				t.Fatal(err)
			}
			c, err := ln.Accept()
			if err == nil {
				c.Close()
				t.Fatal("should fail")
			}

// Note: we cannot ensure that a subsequent Dial does not succeed, because
			// we do not in general have any guarantee that ln.Addr is not immediately
			// reused. (TCP sockets enter a TIME_WAIT state when closed, but that only
			// applies to existing connections for the port — it does not prevent the
			// port itself from being used for entirely new connections in the
			// meantime.)
		})
	}
}

func TestPacketConnClose(t *testing.T) {
	t.Parallel()
	for _, network := range []string{"udp", "unixgram"} {
		network := network
		t.Run(network, func(t *testing.T) {
			if !testableNetwork(network) {
				t.Skipf("network %s is not testable on the current platform", network)
			}
			t.Parallel()

c := newLocalPacketListener(t, network)
			switch network {
			case "unixgram":
				defer os.Remove(c.LocalAddr().String())
			}
			defer c.Close()

if err := c.Close(); err != nil {
				if perr := parseCloseError(err, false); perr != nil {
					t.Error(perr)
				}
				t.Fatal(err)
			}
			var b [1]byte
			n, _, err := c.ReadFrom(b[:])
			if n != 0 || err == nil {
				t.Fatalf("got (%d, %v); want (0, error)", n, err)
			}
		})
	}
}

// See golang.org/issue/6163, golang.org/issue/6987.
func TestAcceptIgnoreAbortedConnRequest(t *testing.T) {
	switch runtime.GOOS {
	case "plan9":
		t.Skipf("%s does not have full support of socktest", runtime.GOOS)
	}

syserr := make(chan error)
	go func() {
		defer close(syserr)
		for _, err := range abortedConnRequestErrors {
			syserr <- err
		}
	}()
	sw.Set(socktest.FilterAccept, func(so *socktest.Status) (socktest.AfterFilter, error) {
		if err, ok := <-syserr; ok {
			return nil, err
		}
		return nil, nil
	})
	defer sw.Set(socktest.FilterAccept, nil)

operr := make(chan error, 1)
	handler := func(ls *localServer, ln Listener) {
		defer close(operr)
		c, err := ln.Accept()
		if err != nil {
			if perr := parseAcceptError(err); perr != nil {
				operr <- perr
			}
			operr <- err
			return
		}
		c.Close()
	}
	ls := newLocalServer(t, "tcp")
	defer ls.teardown()
	if err := ls.buildup(handler); err != nil {
		t.Fatal(err)
	}

c, err := Dial(ls.Listener.Addr().Network(), ls.Listener.Addr().String())
	if err != nil {
		t.Fatal(err)
	}
	c.Close()

for err := range operr {
		t.Error(err)
	}
}

func TestZeroByteRead(t *testing.T) {
	t.Parallel()
	for _, network := range []string{"tcp", "unix", "unixpacket"} {
		network := network
		t.Run(network, func(t *testing.T) {
			if !testableNetwork(network) {
				t.Skipf("network %s is not testable on the current platform", network)
			}
			t.Parallel()

ln := newLocalListener(t, network)
			connc := make(chan Conn, 1)
			defer func() {
				ln.Close()
				for c := range connc {
					if c != nil {
						c.Close()
					}
				}
			}()
			go func() {
				defer close(connc)
				c, err := ln.Accept()
				if err != nil {
					t.Error(err)
				}
				connc <- c // might be nil
			}()
			c, err := Dial(network, ln.Addr().String())
			if err != nil {
				t.Fatal(err)
			}
			defer c.Close()
			sc := <-connc
			if sc == nil {
				return
			}
			defer sc.Close()

if runtime.GOOS == "windows" {
				// A zero byte read on Windows caused a wait for readability first.
				// Rather than change that behavior, satisfy it in this test.
				// See Issue 15735.
				go io.WriteString(sc, "a")
			}

n, err := c.Read(nil)
			if n != 0 || err != nil {
				t.Errorf("%s: zero byte client read = %v, %v; want 0, nil", network, n, err)
			}

if runtime.GOOS == "windows" {
				// Same as comment above.
				go io.WriteString(c, "a")
			}
			n, err = sc.Read(nil)
			if n != 0 || err != nil {
				t.Errorf("%s: zero byte server read = %v, %v; want 0, nil", network, n, err)
			}
		})
	}
}

// withTCPConnPair sets up a TCP connection between two peers, then
// runs peer1 and peer2 concurrently. withTCPConnPair returns when
// both have completed.
func withTCPConnPair(t *testing.T, peer1, peer2 func(c *TCPConn) error) {
	t.Helper()
	ln := newLocalListener(t, "tcp")
	defer ln.Close()
	errc := make(chan error, 2)
	go func() {
		c1, err := ln.Accept()
		if err != nil {
			errc <- err
			return
		}
		err = peer1(c1.(*TCPConn))
		c1.Close()
		errc <- err
	}()
	go func() {
		c2, err := Dial("tcp", ln.Addr().String())
		if err != nil {
			errc <- err
			return
		}
		err = peer2(c2.(*TCPConn))
		c2.Close()
		errc <- err
	}()
	for i := 0; i < 2; i++ {
		if err := <-errc; err != nil {
			t.Error(err)
		}
	}
}

// Tests that a blocked Read is interrupted by a concurrent SetReadDeadline
// modifying that Conn's read deadline to the past.
// See golang.org/cl/30164 which documented this. The net/http package
// depends on this.
func TestReadTimeoutUnblocksRead(t *testing.T) {
	serverDone := make(chan struct{})
	server := func(cs *TCPConn) error {
		defer close(serverDone)
		errc := make(chan error, 1)
		go func() {
			defer close(errc)
			go func() {
				// TODO: find a better way to wait
				// until we're blocked in the cs.Read
				// call below. Sleep is lame.
				time.Sleep(100 * time.Millisecond)

// Interrupt the upcoming Read, unblocking it:
				cs.SetReadDeadline(time.Unix(123, 0)) // time in the past
			}()
			var buf [1]byte
			n, err := cs.Read(buf[:1])
			if n != 0 || err == nil {
				errc <- fmt.Errorf("Read = %v, %v; want 0, non-nil", n, err)
			}
		}()
		select {
		case err := <-errc:
			return err
		case <-time.After(5 * time.Second):
			buf := make([]byte, 2<<20)
			buf = buf[:runtime.Stack(buf, true)]
			println("Stacks at timeout:\n", string(buf))
			return errors.New("timeout waiting for Read to finish")
		}

}
	// Do nothing in the client. Never write. Just wait for the
	// server's half to be done.
	client := func(*TCPConn) error {
		<-serverDone
		return nil
	}
	withTCPConnPair(t, client, server)
}

// Issue 17695: verify that a blocked Read is woken up by a Close.
func TestCloseUnblocksRead(t *testing.T) {
	t.Parallel()
	server := func(cs *TCPConn) error {
		// Give the client time to get stuck in a Read:
		time.Sleep(20 * time.Millisecond)
		cs.Close()
		return nil
	}
	client := func(ss *TCPConn) error {
		n, err := ss.Read([]byte{0})
		if n != 0 || err != io.EOF {
			return fmt.Errorf("Read = %v, %v; want 0, EOF", n, err)
		}
		return nil
	}
	withTCPConnPair(t, client, server)
}

// Issue 24808: verify that ECONNRESET is not temporary for read.
func TestNotTemporaryRead(t *testing.T) {
	t.Parallel()

ln := newLocalListener(t, "tcp")
	serverDone := make(chan struct{})
	dialed := make(chan struct{})
	go func() {
		defer close(serverDone)

cs, err := ln.Accept()
		if err != nil {
			return
		}
		<-dialed
		cs.(*TCPConn).SetLinger(0)
		cs.Close()
	}()
	defer func() {
		ln.Close()
		<-serverDone
	}()

ss, err := Dial("tcp", ln.Addr().String())
	close(dialed)
	if err != nil {
		t.Fatal(err)
	}
	defer ss.Close()

_, err = ss.Read([]byte{0})
	if err == nil {
		t.Fatal("Read succeeded unexpectedly")
	} else if err == io.EOF {
		// This happens on Plan 9, but for some reason (prior to CL 385314) it was
		// accepted everywhere else too.
		if runtime.GOOS == "plan9" {
			return
		}
		t.Fatal("Read unexpectedly returned io.EOF after socket was abruptly closed")
	}
	if ne, ok := err.(Error); !ok {
		t.Errorf("Read error does not implement net.Error: %v", err)
	} else if ne.Temporary() {
		t.Errorf("Read error is unexpectedly temporary: %v", err)
	}
}

// The various errors should implement the Error interface.
func TestErrors(t *testing.T) {
	var (
		_ Error = &OpError{}
		_ Error = &ParseError{}
		_ Error = &AddrError{}
		_ Error = UnknownNetworkError("")
		_ Error = InvalidAddrError("")
		_ Error = &timeoutError{}
		_ Error = &DNSConfigError{}
		_ Error = &DNSError{}
	)

// ErrClosed was introduced as type error, so we can't check
	// it using a declaration.
	if _, ok := ErrClosed.(Error); !ok {
		t.Fatal("ErrClosed does not implement Error")
	}
}

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