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-rw-r--r--src/net/error_test.go806
1 files changed, 806 insertions, 0 deletions
diff --git a/src/net/error_test.go b/src/net/error_test.go
new file mode 100644
index 0000000..556eb8c
--- /dev/null
+++ b/src/net/error_test.go
@@ -0,0 +1,806 @@
+// Copyright 2015 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 (
+ "context"
+ "errors"
+ "fmt"
+ "internal/poll"
+ "io"
+ "io/fs"
+ "net/internal/socktest"
+ "os"
+ "runtime"
+ "strings"
+ "testing"
+ "time"
+)
+
+func (e *OpError) isValid() error {
+ if e.Op == "" {
+ return fmt.Errorf("OpError.Op is empty: %v", e)
+ }
+ if e.Net == "" {
+ return fmt.Errorf("OpError.Net is empty: %v", e)
+ }
+ for _, addr := range []Addr{e.Source, e.Addr} {
+ switch addr := addr.(type) {
+ case nil:
+ case *TCPAddr:
+ if addr == nil {
+ return fmt.Errorf("OpError.Source or Addr is non-nil interface: %#v, %v", addr, e)
+ }
+ case *UDPAddr:
+ if addr == nil {
+ return fmt.Errorf("OpError.Source or Addr is non-nil interface: %#v, %v", addr, e)
+ }
+ case *IPAddr:
+ if addr == nil {
+ return fmt.Errorf("OpError.Source or Addr is non-nil interface: %#v, %v", addr, e)
+ }
+ case *IPNet:
+ if addr == nil {
+ return fmt.Errorf("OpError.Source or Addr is non-nil interface: %#v, %v", addr, e)
+ }
+ case *UnixAddr:
+ if addr == nil {
+ return fmt.Errorf("OpError.Source or Addr is non-nil interface: %#v, %v", addr, e)
+ }
+ case *pipeAddr:
+ if addr == nil {
+ return fmt.Errorf("OpError.Source or Addr is non-nil interface: %#v, %v", addr, e)
+ }
+ case fileAddr:
+ if addr == "" {
+ return fmt.Errorf("OpError.Source or Addr is empty: %#v, %v", addr, e)
+ }
+ default:
+ return fmt.Errorf("OpError.Source or Addr is unknown type: %T, %v", addr, e)
+ }
+ }
+ if e.Err == nil {
+ return fmt.Errorf("OpError.Err is empty: %v", e)
+ }
+ return nil
+}
+
+// parseDialError parses nestedErr and reports whether it is a valid
+// error value from Dial, Listen functions.
+// It returns nil when nestedErr is valid.
+func parseDialError(nestedErr error) error {
+ if nestedErr == nil {
+ return nil
+ }
+
+ switch err := nestedErr.(type) {
+ case *OpError:
+ if err := err.isValid(); err != nil {
+ return err
+ }
+ nestedErr = err.Err
+ goto second
+ }
+ return fmt.Errorf("unexpected type on 1st nested level: %T", nestedErr)
+
+second:
+ if isPlatformError(nestedErr) {
+ return nil
+ }
+ switch err := nestedErr.(type) {
+ case *AddrError, addrinfoErrno, *timeoutError, *DNSError, InvalidAddrError, *ParseError, *poll.DeadlineExceededError, UnknownNetworkError:
+ return nil
+ case *os.SyscallError:
+ nestedErr = err.Err
+ goto third
+ case *fs.PathError: // for Plan 9
+ nestedErr = err.Err
+ goto third
+ }
+ switch nestedErr {
+ case errCanceled, ErrClosed, errMissingAddress, errNoSuitableAddress,
+ context.DeadlineExceeded, context.Canceled:
+ return nil
+ }
+ return fmt.Errorf("unexpected type on 2nd nested level: %T", nestedErr)
+
+third:
+ if isPlatformError(nestedErr) {
+ return nil
+ }
+ return fmt.Errorf("unexpected type on 3rd nested level: %T", nestedErr)
+}
+
+var dialErrorTests = []struct {
+ network, address string
+}{
+ {"foo", ""},
+ {"bar", "baz"},
+ {"datakit", "mh/astro/r70"},
+ {"tcp", ""},
+ {"tcp", "127.0.0.1:☺"},
+ {"tcp", "no-such-name:80"},
+ {"tcp", "mh/astro/r70:http"},
+
+ {"tcp", JoinHostPort("127.0.0.1", "-1")},
+ {"tcp", JoinHostPort("127.0.0.1", "123456789")},
+ {"udp", JoinHostPort("127.0.0.1", "-1")},
+ {"udp", JoinHostPort("127.0.0.1", "123456789")},
+ {"ip:icmp", "127.0.0.1"},
+
+ {"unix", "/path/to/somewhere"},
+ {"unixgram", "/path/to/somewhere"},
+ {"unixpacket", "/path/to/somewhere"},
+}
+
+func TestDialError(t *testing.T) {
+ switch runtime.GOOS {
+ case "plan9":
+ t.Skipf("%s does not have full support of socktest", runtime.GOOS)
+ }
+
+ origTestHookLookupIP := testHookLookupIP
+ defer func() { testHookLookupIP = origTestHookLookupIP }()
+ testHookLookupIP = func(ctx context.Context, fn func(context.Context, string, string) ([]IPAddr, error), network, host string) ([]IPAddr, error) {
+ return nil, &DNSError{Err: "dial error test", Name: "name", Server: "server", IsTimeout: true}
+ }
+ sw.Set(socktest.FilterConnect, func(so *socktest.Status) (socktest.AfterFilter, error) {
+ return nil, errOpNotSupported
+ })
+ defer sw.Set(socktest.FilterConnect, nil)
+
+ d := Dialer{Timeout: someTimeout}
+ for i, tt := range dialErrorTests {
+ c, err := d.Dial(tt.network, tt.address)
+ if err == nil {
+ t.Errorf("#%d: should fail; %s:%s->%s", i, c.LocalAddr().Network(), c.LocalAddr(), c.RemoteAddr())
+ c.Close()
+ continue
+ }
+ if tt.network == "tcp" || tt.network == "udp" {
+ nerr := err
+ if op, ok := nerr.(*OpError); ok {
+ nerr = op.Err
+ }
+ if sys, ok := nerr.(*os.SyscallError); ok {
+ nerr = sys.Err
+ }
+ if nerr == errOpNotSupported {
+ t.Errorf("#%d: should fail without %v; %s:%s->", i, nerr, tt.network, tt.address)
+ continue
+ }
+ }
+ if c != nil {
+ t.Errorf("Dial returned non-nil interface %T(%v) with err != nil", c, c)
+ }
+ if err = parseDialError(err); err != nil {
+ t.Errorf("#%d: %v", i, err)
+ continue
+ }
+ }
+}
+
+func TestProtocolDialError(t *testing.T) {
+ switch runtime.GOOS {
+ case "solaris", "illumos":
+ t.Skipf("not supported on %s", runtime.GOOS)
+ }
+
+ for _, network := range []string{"tcp", "udp", "ip:4294967296", "unix", "unixpacket", "unixgram"} {
+ var err error
+ switch network {
+ case "tcp":
+ _, err = DialTCP(network, nil, &TCPAddr{Port: 1 << 16})
+ case "udp":
+ _, err = DialUDP(network, nil, &UDPAddr{Port: 1 << 16})
+ case "ip:4294967296":
+ _, err = DialIP(network, nil, nil)
+ case "unix", "unixpacket", "unixgram":
+ _, err = DialUnix(network, nil, &UnixAddr{Name: "//"})
+ }
+ if err == nil {
+ t.Errorf("%s: should fail", network)
+ continue
+ }
+ if err = parseDialError(err); err != nil {
+ t.Errorf("%s: %v", network, err)
+ continue
+ }
+ }
+}
+
+func TestDialAddrError(t *testing.T) {
+ switch runtime.GOOS {
+ case "plan9":
+ t.Skipf("not supported on %s", runtime.GOOS)
+ }
+ if !supportsIPv4() || !supportsIPv6() {
+ t.Skip("both IPv4 and IPv6 are required")
+ }
+
+ for _, tt := range []struct {
+ network string
+ lit string
+ addr *TCPAddr
+ }{
+ {"tcp4", "::1", nil},
+ {"tcp4", "", &TCPAddr{IP: IPv6loopback}},
+ // We don't test the {"tcp6", "byte sequence", nil}
+ // case for now because there is no easy way to
+ // control name resolution.
+ {"tcp6", "", &TCPAddr{IP: IP{0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef}}},
+ } {
+ var err error
+ var c Conn
+ var op string
+ if tt.lit != "" {
+ c, err = Dial(tt.network, JoinHostPort(tt.lit, "0"))
+ op = fmt.Sprintf("Dial(%q, %q)", tt.network, JoinHostPort(tt.lit, "0"))
+ } else {
+ c, err = DialTCP(tt.network, nil, tt.addr)
+ op = fmt.Sprintf("DialTCP(%q, %q)", tt.network, tt.addr)
+ }
+ if err == nil {
+ c.Close()
+ t.Errorf("%s succeeded, want error", op)
+ continue
+ }
+ if perr := parseDialError(err); perr != nil {
+ t.Errorf("%s: %v", op, perr)
+ continue
+ }
+ operr := err.(*OpError).Err
+ aerr, ok := operr.(*AddrError)
+ if !ok {
+ t.Errorf("%s: %v is %T, want *AddrError", op, err, operr)
+ continue
+ }
+ want := tt.lit
+ if tt.lit == "" {
+ want = tt.addr.IP.String()
+ }
+ if aerr.Addr != want {
+ t.Errorf("%s: %v, error Addr=%q, want %q", op, err, aerr.Addr, want)
+ }
+ }
+}
+
+var listenErrorTests = []struct {
+ network, address string
+}{
+ {"foo", ""},
+ {"bar", "baz"},
+ {"datakit", "mh/astro/r70"},
+ {"tcp", "127.0.0.1:☺"},
+ {"tcp", "no-such-name:80"},
+ {"tcp", "mh/astro/r70:http"},
+
+ {"tcp", JoinHostPort("127.0.0.1", "-1")},
+ {"tcp", JoinHostPort("127.0.0.1", "123456789")},
+
+ {"unix", "/path/to/somewhere"},
+ {"unixpacket", "/path/to/somewhere"},
+}
+
+func TestListenError(t *testing.T) {
+ switch runtime.GOOS {
+ case "plan9":
+ t.Skipf("%s does not have full support of socktest", runtime.GOOS)
+ }
+
+ origTestHookLookupIP := testHookLookupIP
+ defer func() { testHookLookupIP = origTestHookLookupIP }()
+ testHookLookupIP = func(_ context.Context, fn func(context.Context, string, string) ([]IPAddr, error), network, host string) ([]IPAddr, error) {
+ return nil, &DNSError{Err: "listen error test", Name: "name", Server: "server", IsTimeout: true}
+ }
+ sw.Set(socktest.FilterListen, func(so *socktest.Status) (socktest.AfterFilter, error) {
+ return nil, errOpNotSupported
+ })
+ defer sw.Set(socktest.FilterListen, nil)
+
+ for i, tt := range listenErrorTests {
+ ln, err := Listen(tt.network, tt.address)
+ if err == nil {
+ t.Errorf("#%d: should fail; %s:%s->", i, ln.Addr().Network(), ln.Addr())
+ ln.Close()
+ continue
+ }
+ if tt.network == "tcp" {
+ nerr := err
+ if op, ok := nerr.(*OpError); ok {
+ nerr = op.Err
+ }
+ if sys, ok := nerr.(*os.SyscallError); ok {
+ nerr = sys.Err
+ }
+ if nerr == errOpNotSupported {
+ t.Errorf("#%d: should fail without %v; %s:%s->", i, nerr, tt.network, tt.address)
+ continue
+ }
+ }
+ if ln != nil {
+ t.Errorf("Listen returned non-nil interface %T(%v) with err != nil", ln, ln)
+ }
+ if err = parseDialError(err); err != nil {
+ t.Errorf("#%d: %v", i, err)
+ continue
+ }
+ }
+}
+
+var listenPacketErrorTests = []struct {
+ network, address string
+}{
+ {"foo", ""},
+ {"bar", "baz"},
+ {"datakit", "mh/astro/r70"},
+ {"udp", "127.0.0.1:☺"},
+ {"udp", "no-such-name:80"},
+ {"udp", "mh/astro/r70:http"},
+
+ {"udp", JoinHostPort("127.0.0.1", "-1")},
+ {"udp", JoinHostPort("127.0.0.1", "123456789")},
+}
+
+func TestListenPacketError(t *testing.T) {
+ switch runtime.GOOS {
+ case "plan9":
+ t.Skipf("%s does not have full support of socktest", runtime.GOOS)
+ }
+
+ origTestHookLookupIP := testHookLookupIP
+ defer func() { testHookLookupIP = origTestHookLookupIP }()
+ testHookLookupIP = func(_ context.Context, fn func(context.Context, string, string) ([]IPAddr, error), network, host string) ([]IPAddr, error) {
+ return nil, &DNSError{Err: "listen error test", Name: "name", Server: "server", IsTimeout: true}
+ }
+
+ for i, tt := range listenPacketErrorTests {
+ c, err := ListenPacket(tt.network, tt.address)
+ if err == nil {
+ t.Errorf("#%d: should fail; %s:%s->", i, c.LocalAddr().Network(), c.LocalAddr())
+ c.Close()
+ continue
+ }
+ if c != nil {
+ t.Errorf("ListenPacket returned non-nil interface %T(%v) with err != nil", c, c)
+ }
+ if err = parseDialError(err); err != nil {
+ t.Errorf("#%d: %v", i, err)
+ continue
+ }
+ }
+}
+
+func TestProtocolListenError(t *testing.T) {
+ switch runtime.GOOS {
+ case "plan9":
+ t.Skipf("not supported on %s", runtime.GOOS)
+ }
+
+ for _, network := range []string{"tcp", "udp", "ip:4294967296", "unix", "unixpacket", "unixgram"} {
+ var err error
+ switch network {
+ case "tcp":
+ _, err = ListenTCP(network, &TCPAddr{Port: 1 << 16})
+ case "udp":
+ _, err = ListenUDP(network, &UDPAddr{Port: 1 << 16})
+ case "ip:4294967296":
+ _, err = ListenIP(network, nil)
+ case "unix", "unixpacket":
+ _, err = ListenUnix(network, &UnixAddr{Name: "//"})
+ case "unixgram":
+ _, err = ListenUnixgram(network, &UnixAddr{Name: "//"})
+ }
+ if err == nil {
+ t.Errorf("%s: should fail", network)
+ continue
+ }
+ if err = parseDialError(err); err != nil {
+ t.Errorf("%s: %v", network, err)
+ continue
+ }
+ }
+}
+
+// parseReadError parses nestedErr and reports whether it is a valid
+// error value from Read functions.
+// It returns nil when nestedErr is valid.
+func parseReadError(nestedErr error) error {
+ if nestedErr == nil {
+ return nil
+ }
+
+ switch err := nestedErr.(type) {
+ case *OpError:
+ if err := err.isValid(); err != nil {
+ return err
+ }
+ nestedErr = err.Err
+ goto second
+ }
+ if nestedErr == io.EOF {
+ return nil
+ }
+ return fmt.Errorf("unexpected type on 1st nested level: %T", nestedErr)
+
+second:
+ if isPlatformError(nestedErr) {
+ return nil
+ }
+ switch err := nestedErr.(type) {
+ case *os.SyscallError:
+ nestedErr = err.Err
+ goto third
+ }
+ switch nestedErr {
+ case ErrClosed, errTimeout, poll.ErrNotPollable, os.ErrDeadlineExceeded:
+ return nil
+ }
+ return fmt.Errorf("unexpected type on 2nd nested level: %T", nestedErr)
+
+third:
+ if isPlatformError(nestedErr) {
+ return nil
+ }
+ return fmt.Errorf("unexpected type on 3rd nested level: %T", nestedErr)
+}
+
+// parseWriteError parses nestedErr and reports whether it is a valid
+// error value from Write functions.
+// It returns nil when nestedErr is valid.
+func parseWriteError(nestedErr error) error {
+ if nestedErr == nil {
+ return nil
+ }
+
+ switch err := nestedErr.(type) {
+ case *OpError:
+ if err := err.isValid(); err != nil {
+ return err
+ }
+ nestedErr = err.Err
+ goto second
+ }
+ return fmt.Errorf("unexpected type on 1st nested level: %T", nestedErr)
+
+second:
+ if isPlatformError(nestedErr) {
+ return nil
+ }
+ switch err := nestedErr.(type) {
+ case *AddrError, addrinfoErrno, *timeoutError, *DNSError, InvalidAddrError, *ParseError, *poll.DeadlineExceededError, UnknownNetworkError:
+ return nil
+ case *os.SyscallError:
+ nestedErr = err.Err
+ goto third
+ }
+ switch nestedErr {
+ case errCanceled, ErrClosed, errMissingAddress, errTimeout, os.ErrDeadlineExceeded, ErrWriteToConnected, io.ErrUnexpectedEOF:
+ return nil
+ }
+ return fmt.Errorf("unexpected type on 2nd nested level: %T", nestedErr)
+
+third:
+ if isPlatformError(nestedErr) {
+ return nil
+ }
+ return fmt.Errorf("unexpected type on 3rd nested level: %T", nestedErr)
+}
+
+// parseCloseError parses nestedErr and reports whether it is a valid
+// error value from Close functions.
+// It returns nil when nestedErr is valid.
+func parseCloseError(nestedErr error, isShutdown bool) error {
+ if nestedErr == nil {
+ return nil
+ }
+
+ // Because historically we have not exported the error that we
+ // return for an operation on a closed network connection,
+ // there are programs that test for the exact error string.
+ // Verify that string here so that we don't break those
+ // programs unexpectedly. See issues #4373 and #19252.
+ want := "use of closed network connection"
+ if !isShutdown && !strings.Contains(nestedErr.Error(), want) {
+ return fmt.Errorf("error string %q does not contain expected string %q", nestedErr, want)
+ }
+
+ if !isShutdown && !errors.Is(nestedErr, ErrClosed) {
+ return fmt.Errorf("errors.Is(%v, errClosed) returns false, want true", nestedErr)
+ }
+
+ switch err := nestedErr.(type) {
+ case *OpError:
+ if err := err.isValid(); err != nil {
+ return err
+ }
+ nestedErr = err.Err
+ goto second
+ }
+ return fmt.Errorf("unexpected type on 1st nested level: %T", nestedErr)
+
+second:
+ if isPlatformError(nestedErr) {
+ return nil
+ }
+ switch err := nestedErr.(type) {
+ case *os.SyscallError:
+ nestedErr = err.Err
+ goto third
+ case *fs.PathError: // for Plan 9
+ nestedErr = err.Err
+ goto third
+ }
+ switch nestedErr {
+ case ErrClosed:
+ return nil
+ }
+ return fmt.Errorf("unexpected type on 2nd nested level: %T", nestedErr)
+
+third:
+ if isPlatformError(nestedErr) {
+ return nil
+ }
+ switch nestedErr {
+ case fs.ErrClosed: // for Plan 9
+ return nil
+ }
+ return fmt.Errorf("unexpected type on 3rd nested level: %T", nestedErr)
+}
+
+func TestCloseError(t *testing.T) {
+ ln, err := newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer ln.Close()
+ c, err := Dial(ln.Addr().Network(), ln.Addr().String())
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer c.Close()
+
+ for i := 0; i < 3; i++ {
+ err = c.(*TCPConn).CloseRead()
+ if perr := parseCloseError(err, true); perr != nil {
+ t.Errorf("#%d: %v", i, perr)
+ }
+ }
+ for i := 0; i < 3; i++ {
+ err = c.(*TCPConn).CloseWrite()
+ if perr := parseCloseError(err, true); perr != nil {
+ t.Errorf("#%d: %v", i, perr)
+ }
+ }
+ for i := 0; i < 3; i++ {
+ err = c.Close()
+ if perr := parseCloseError(err, false); perr != nil {
+ t.Errorf("#%d: %v", i, perr)
+ }
+ err = ln.Close()
+ if perr := parseCloseError(err, false); perr != nil {
+ t.Errorf("#%d: %v", i, perr)
+ }
+ }
+
+ pc, err := ListenPacket("udp", "127.0.0.1:0")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer pc.Close()
+
+ for i := 0; i < 3; i++ {
+ err = pc.Close()
+ if perr := parseCloseError(err, false); perr != nil {
+ t.Errorf("#%d: %v", i, perr)
+ }
+ }
+}
+
+// parseAcceptError parses nestedErr and reports whether it is a valid
+// error value from Accept functions.
+// It returns nil when nestedErr is valid.
+func parseAcceptError(nestedErr error) error {
+ if nestedErr == nil {
+ return nil
+ }
+
+ switch err := nestedErr.(type) {
+ case *OpError:
+ if err := err.isValid(); err != nil {
+ return err
+ }
+ nestedErr = err.Err
+ goto second
+ }
+ return fmt.Errorf("unexpected type on 1st nested level: %T", nestedErr)
+
+second:
+ if isPlatformError(nestedErr) {
+ return nil
+ }
+ switch err := nestedErr.(type) {
+ case *os.SyscallError:
+ nestedErr = err.Err
+ goto third
+ case *fs.PathError: // for Plan 9
+ nestedErr = err.Err
+ goto third
+ }
+ switch nestedErr {
+ case ErrClosed, errTimeout, poll.ErrNotPollable, os.ErrDeadlineExceeded:
+ return nil
+ }
+ return fmt.Errorf("unexpected type on 2nd nested level: %T", nestedErr)
+
+third:
+ if isPlatformError(nestedErr) {
+ return nil
+ }
+ return fmt.Errorf("unexpected type on 3rd nested level: %T", nestedErr)
+}
+
+func TestAcceptError(t *testing.T) {
+ handler := func(ls *localServer, ln Listener) {
+ for {
+ ln.(*TCPListener).SetDeadline(time.Now().Add(5 * time.Millisecond))
+ c, err := ln.Accept()
+ if perr := parseAcceptError(err); perr != nil {
+ t.Error(perr)
+ }
+ if err != nil {
+ if c != nil {
+ t.Errorf("Accept returned non-nil interface %T(%v) with err != nil", c, c)
+ }
+ if nerr, ok := err.(Error); !ok || (!nerr.Timeout() && !nerr.Temporary()) {
+ return
+ }
+ continue
+ }
+ c.Close()
+ }
+ }
+ ls, err := newLocalServer("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+ if err := ls.buildup(handler); err != nil {
+ ls.teardown()
+ t.Fatal(err)
+ }
+
+ time.Sleep(100 * time.Millisecond)
+ ls.teardown()
+}
+
+// parseCommonError parses nestedErr and reports whether it is a valid
+// error value from miscellaneous functions.
+// It returns nil when nestedErr is valid.
+func parseCommonError(nestedErr error) error {
+ if nestedErr == nil {
+ return nil
+ }
+
+ switch err := nestedErr.(type) {
+ case *OpError:
+ if err := err.isValid(); err != nil {
+ return err
+ }
+ nestedErr = err.Err
+ goto second
+ }
+ return fmt.Errorf("unexpected type on 1st nested level: %T", nestedErr)
+
+second:
+ if isPlatformError(nestedErr) {
+ return nil
+ }
+ switch err := nestedErr.(type) {
+ case *os.SyscallError:
+ nestedErr = err.Err
+ goto third
+ case *os.LinkError:
+ nestedErr = err.Err
+ goto third
+ case *fs.PathError:
+ nestedErr = err.Err
+ goto third
+ }
+ switch nestedErr {
+ case ErrClosed:
+ return nil
+ }
+ return fmt.Errorf("unexpected type on 2nd nested level: %T", nestedErr)
+
+third:
+ if isPlatformError(nestedErr) {
+ return nil
+ }
+ return fmt.Errorf("unexpected type on 3rd nested level: %T", nestedErr)
+}
+
+func TestFileError(t *testing.T) {
+ switch runtime.GOOS {
+ case "windows":
+ t.Skipf("not supported on %s", runtime.GOOS)
+ }
+
+ f, err := os.CreateTemp("", "go-nettest")
+ if err != nil {
+ t.Fatal(err)
+ }
+ defer os.Remove(f.Name())
+ defer f.Close()
+
+ c, err := FileConn(f)
+ if err != nil {
+ if c != nil {
+ t.Errorf("FileConn returned non-nil interface %T(%v) with err != nil", c, c)
+ }
+ if perr := parseCommonError(err); perr != nil {
+ t.Error(perr)
+ }
+ } else {
+ c.Close()
+ t.Error("should fail")
+ }
+ ln, err := FileListener(f)
+ if err != nil {
+ if ln != nil {
+ t.Errorf("FileListener returned non-nil interface %T(%v) with err != nil", ln, ln)
+ }
+ if perr := parseCommonError(err); perr != nil {
+ t.Error(perr)
+ }
+ } else {
+ ln.Close()
+ t.Error("should fail")
+ }
+ pc, err := FilePacketConn(f)
+ if err != nil {
+ if pc != nil {
+ t.Errorf("FilePacketConn returned non-nil interface %T(%v) with err != nil", pc, pc)
+ }
+ if perr := parseCommonError(err); perr != nil {
+ t.Error(perr)
+ }
+ } else {
+ pc.Close()
+ t.Error("should fail")
+ }
+
+ ln, err = newLocalListener("tcp")
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ for i := 0; i < 3; i++ {
+ f, err := ln.(*TCPListener).File()
+ if err != nil {
+ if perr := parseCommonError(err); perr != nil {
+ t.Error(perr)
+ }
+ } else {
+ f.Close()
+ }
+ ln.Close()
+ }
+}
+
+func parseLookupPortError(nestedErr error) error {
+ if nestedErr == nil {
+ return nil
+ }
+
+ switch nestedErr.(type) {
+ case *AddrError, *DNSError:
+ return nil
+ case *fs.PathError: // for Plan 9
+ return nil
+ }
+ return fmt.Errorf("unexpected type on 1st nested level: %T", nestedErr)
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 09:12:04 +0000