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addrselect.go
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addrselect_test.go
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cgo_aix.go
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cgo_android.go
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cgo_bsd.go
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cgo_linux.go
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cgo_netbsd.go
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cgo_openbsd.go
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cgo_resnew.go
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cgo_resold.go
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cgo_socknew.go
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cgo_sockold.go
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cgo_solaris.go
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cgo_stub.go
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cgo_unix.go
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cgo_unix_test.go
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cgo_windows.go
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conf.go
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conf_netcgo.go
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conf_test.go
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conn_test.go
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dial.go
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dial_test.go
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dial_unix_test.go
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dnsclient.go
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dnsclient_test.go
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dnsclient_unix.go
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dnsclient_unix_test.go
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dnsconfig_unix.go
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dnsconfig_unix_test.go
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dnsname_test.go
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error_plan9.go
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error_plan9_test.go
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error_posix.go
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error_posix_test.go
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error_test.go
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error_unix.go
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error_unix_test.go
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error_windows.go
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error_windows_test.go
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example_test.go
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external_test.go
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fd_plan9.go
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fd_unix.go
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fd_windows.go
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file.go
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file_stub.go
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file_test.go
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file_unix.go
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file_windows.go
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hook.go
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hook_plan9.go
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hook_unix.go
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hook_windows.go
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hosts.go
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hosts_test.go
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interface.go
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interface_aix.go
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interface_bsd.go
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interface_bsdvar.go
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interface_freebsd.go
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interface_linux.go
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interface_linux_test.go
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interface_plan9.go
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interface_solaris.go
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interface_stub.go
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interface_test.go
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interface_unix_test.go
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interface_windows.go
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ip.go
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ip_test.go
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iprawsock.go
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iprawsock_plan9.go
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iprawsock_posix.go
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iprawsock_test.go
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ipsock.go
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ipsock_plan9.go
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ipsock_posix.go
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ipsock_test.go
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listen_test.go
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lookup.go
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lookup_fake.go
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lookup_plan9.go
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lookup_test.go
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lookup_unix.go
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lookup_windows.go
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lookup_windows_test.go
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mac.go
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mac_test.go
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main_cloexec_test.go
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main_conf_test.go
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main_noconf_test.go
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main_plan9_test.go
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main_test.go
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main_windows_test.go
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mockserver_test.go
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net.go
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net_fake.go
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net_test.go
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net_windows_test.go
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netgo_unix_test.go
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nss.go
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nss_test.go
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packetconn_test.go
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parse.go
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parse_test.go
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pipe.go
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pipe_test.go
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platform_test.go
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port.go
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port_test.go
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port_unix.go
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protoconn_test.go
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rawconn.go
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rawconn_stub_test.go
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rawconn_test.go
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rawconn_unix_test.go
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rawconn_windows_test.go
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sendfile_linux.go
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sendfile_stub.go
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sendfile_test.go
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sendfile_unix_alt.go
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sendfile_windows.go
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server_test.go
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sock_bsd.go
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sock_cloexec.go
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sock_linux.go
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sock_plan9.go
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sock_posix.go
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sock_stub.go
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sock_windows.go
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sockaddr_posix.go
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sockopt_aix.go
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sockopt_bsd.go
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sockopt_linux.go
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sockopt_plan9.go
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sockopt_stub.go
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sockopt_windows.go
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sockoptip_bsdvar.go
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sockoptip_linux.go
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sockoptip_posix.go
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sockoptip_stub.go
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sockoptip_windows.go
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splice_linux.go
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splice_stub.go
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splice_test.go
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sys_cloexec.go
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tcpsock.go
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tcpsockopt_darwin.go
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timeout_test.go
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unixsock.go
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unixsock_linux_test.go
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unixsock_plan9.go
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write_unix_test.go
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writev_test.go
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writev_unix.go
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Code Editor : writev_test.go
// 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. // +build !js package net import ( "bytes" "fmt" "internal/poll" "io" "io/ioutil" "reflect" "runtime" "sync" "testing" ) func TestBuffers_read(t *testing.T) { const story = "once upon a time in Gopherland ... " buffers := Buffers{ []byte("once "), []byte("upon "), []byte("a "), []byte("time "), []byte("in "), []byte("Gopherland ... "), } got, err := ioutil.ReadAll(&buffers) if err != nil { t.Fatal(err) } if string(got) != story { t.Errorf("read %q; want %q", got, story) } if len(buffers) != 0 { t.Errorf("len(buffers) = %d; want 0", len(buffers)) } } func TestBuffers_consume(t *testing.T) { tests := []struct { in Buffers consume int64 want Buffers }{ { in: Buffers{[]byte("foo"), []byte("bar")}, consume: 0, want: Buffers{[]byte("foo"), []byte("bar")}, }, { in: Buffers{[]byte("foo"), []byte("bar")}, consume: 2, want: Buffers{[]byte("o"), []byte("bar")}, }, { in: Buffers{[]byte("foo"), []byte("bar")}, consume: 3, want: Buffers{[]byte("bar")}, }, { in: Buffers{[]byte("foo"), []byte("bar")}, consume: 4, want: Buffers{[]byte("ar")}, }, { in: Buffers{nil, nil, nil, []byte("bar")}, consume: 1, want: Buffers{[]byte("ar")}, }, { in: Buffers{nil, nil, nil, []byte("foo")}, consume: 0, want: Buffers{[]byte("foo")}, }, { in: Buffers{nil, nil, nil}, consume: 0, want: Buffers{}, }, } for i, tt := range tests { in := tt.in in.consume(tt.consume) if !reflect.DeepEqual(in, tt.want) { t.Errorf("%d. after consume(%d) = %+v, want %+v", i, tt.consume, in, tt.want) } } } func TestBuffers_WriteTo(t *testing.T) { for _, name := range []string{"WriteTo", "Copy"} { for _, size := range []int{0, 10, 1023, 1024, 1025} { t.Run(fmt.Sprintf("%s/%d", name, size), func(t *testing.T) { testBuffer_writeTo(t, size, name == "Copy") }) } } } func testBuffer_writeTo(t *testing.T, chunks int, useCopy bool) { oldHook := poll.TestHookDidWritev defer func() { poll.TestHookDidWritev = oldHook }() var writeLog struct { sync.Mutex log []int } poll.TestHookDidWritev = func(size int) { writeLog.Lock() writeLog.log = append(writeLog.log, size) writeLog.Unlock() } var want bytes.Buffer for i := 0; i < chunks; i++ { want.WriteByte(byte(i)) } withTCPConnPair(t, func(c *TCPConn) error { buffers := make(Buffers, chunks) for i := range buffers { buffers[i] = want.Bytes()[i : i+1] } var n int64 var err error if useCopy { n, err = io.Copy(c, &buffers) } else { n, err = buffers.WriteTo(c) } if err != nil { return err } if len(buffers) != 0 { return fmt.Errorf("len(buffers) = %d; want 0", len(buffers)) } if n != int64(want.Len()) { return fmt.Errorf("Buffers.WriteTo returned %d; want %d", n, want.Len()) } return nil }, func(c *TCPConn) error { all, err := ioutil.ReadAll(c) if !bytes.Equal(all, want.Bytes()) || err != nil { return fmt.Errorf("client read %q, %v; want %q, nil", all, err, want.Bytes()) } writeLog.Lock() // no need to unlock var gotSum int for _, v := range writeLog.log { gotSum += v } var wantSum int switch runtime.GOOS { case "android", "darwin", "dragonfly", "freebsd", "linux", "netbsd", "openbsd": var wantMinCalls int wantSum = want.Len() v := chunks for v > 0 { wantMinCalls++ v -= 1024 } if len(writeLog.log) < wantMinCalls { t.Errorf("write calls = %v < wanted min %v", len(writeLog.log), wantMinCalls) } case "windows": var wantCalls int wantSum = want.Len() if wantSum > 0 { wantCalls = 1 // windows will always do 1 syscall, unless sending empty buffer } if len(writeLog.log) != wantCalls { t.Errorf("write calls = %v; want %v", len(writeLog.log), wantCalls) } } if gotSum != wantSum { t.Errorf("writev call sum = %v; want %v", gotSum, wantSum) } return nil }) } func TestWritevError(t *testing.T) { if runtime.GOOS == "windows" { t.Skipf("skipping the test: windows does not have problem sending large chunks of data") } ln, err := newLocalListener("tcp") if err != nil { t.Fatal(err) } defer ln.Close() ch := make(chan Conn, 1) go func() { defer close(ch) c, err := ln.Accept() if err != nil { t.Error(err) return } ch <- c }() c1, err := Dial("tcp", ln.Addr().String()) if err != nil { t.Fatal(err) } defer c1.Close() c2 := <-ch if c2 == nil { t.Fatal("no server side connection") } c2.Close() // 1 GB of data should be enough to notice the connection is gone. // Just a few bytes is not enough. // Arrange to reuse the same 1 MB buffer so that we don't allocate much. buf := make([]byte, 1<<20) buffers := make(Buffers, 1<<10) for i := range buffers { buffers[i] = buf } if _, err := buffers.WriteTo(c1); err == nil { t.Fatal("Buffers.WriteTo(closed conn) succeeded, want error") } }
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