nanomsg.org/go/mangos/v2@v2.0.9-0.20200203084354-8a092611e461/transport/ipc/ipc_unix_test.go (about)

     1  // Copyright 2019 The Mangos Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use file except in compliance with the License.
     5  // You may obtain a copy of the license at
     6  //
     7  //    http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  // +build !plan9,!windows,!js
    16  
    17  package ipc
    18  
    19  import (
    20  	"errors"
    21  	"nanomsg.org/go/mangos/v2"
    22  	"net"
    23  	"os"
    24  	"syscall"
    25  	"testing"
    26  	"time"
    27  
    28  	. "nanomsg.org/go/mangos/v2/internal/test"
    29  )
    30  
    31  func TestIsSyscallError(t *testing.T) {
    32  
    33  	MustBeFalse(t, isSyscallError(errors.New("nope"), syscall.ENOENT))
    34  	MustBeFalse(t, isSyscallError(&net.OpError{
    35  		Op:     "test",
    36  		Net:    "none",
    37  		Source: nil,
    38  		Addr:   nil,
    39  		Err:    mangos.ErrClosed,
    40  	}, syscall.ENOENT))
    41  	MustBeFalse(t, isSyscallError(&net.OpError{
    42  		Op:     "test",
    43  		Net:    "none",
    44  		Source: nil,
    45  		Addr:   nil,
    46  		Err: &os.SyscallError{
    47  			Syscall: "none",
    48  			Err:     syscall.EINVAL,
    49  		},
    50  	}, syscall.ENOENT))
    51  	MustBeFalse(t, isSyscallError(&net.OpError{
    52  		Op:     "test",
    53  		Net:    "none",
    54  		Source: nil,
    55  		Addr:   nil,
    56  		Err: &os.SyscallError{
    57  			Syscall: "none",
    58  			Err:     mangos.ErrNotRaw,
    59  		},
    60  	}, syscall.ENOENT))
    61  	MustBeTrue(t, isSyscallError(&net.OpError{
    62  		Op:     "test",
    63  		Net:    "none",
    64  		Source: nil,
    65  		Addr:   nil,
    66  		Err: &os.SyscallError{
    67  			Syscall: "none",
    68  			Err:     syscall.ENOENT,
    69  		},
    70  	}, syscall.ENOENT))
    71  }
    72  
    73  func TestIpcStaleListen(t *testing.T) {
    74  	addr1 := AddrTestIPC()
    75  	name := addr1[len("ipc://"):]
    76  	defer func() {
    77  		_ = os.Remove(name)
    78  		_ = os.Remove(name + ".hold")
    79  	}()
    80  
    81  	uaddr, _ := net.ResolveUnixAddr("unix", name)
    82  	sock, err := net.ListenUnix("unix", uaddr)
    83  
    84  	MustSucceed(t, err)
    85  
    86  	// We rename it so that closing won't unlink the socket.
    87  	// This lets us leave a stale socket behind.
    88  	MustSucceed(t, os.Rename(name, name+".hold"))
    89  	MustSucceed(t, sock.Close())
    90  	MustSucceed(t, os.Rename(name+".hold", name))
    91  
    92  	// Clean up the stale link.
    93  	self := GetMockSocket()
    94  
    95  	MustSucceed(t, self.Listen(addr1))
    96  	defer MustClose(t, self)
    97  }
    98  
    99  func TestIpcBusyListen(t *testing.T) {
   100  	addr1 := AddrTestIPC()
   101  	name := addr1[len("ipc://"):]
   102  
   103  	uaddr, _ := net.ResolveUnixAddr("unix", name)
   104  	sock, err := net.ListenUnix("unix", uaddr)
   105  	defer func() {
   106  		_ = sock.Close()
   107  	}()
   108  
   109  	MustSucceed(t, err)
   110  
   111  	self := GetMockSocket()
   112  
   113  	MustBeError(t, self.Listen(addr1), mangos.ErrAddrInUse)
   114  	defer MustClose(t, self)
   115  }
   116  
   117  func TestIpcFileConflictListen(t *testing.T) {
   118  	addr1 := AddrTestIPC()
   119  	name := addr1[len("ipc://"):]
   120  
   121  	file, err := os.Create(name)
   122  	MustSucceed(t, err)
   123  	_, _ = file.WriteString("abc")
   124  	_ = file.Close()
   125  	defer func() {
   126  		MustSucceed(t, os.Remove(name))
   127  	}()
   128  
   129  	self := GetMockSocket()
   130  
   131  	MustBeError(t, self.Listen(addr1), mangos.ErrAddrInUse)
   132  	defer MustClose(t, self)
   133  }
   134  
   135  type testAddr string
   136  
   137  func (a testAddr) testDial() (net.Conn, error) {
   138  	return net.Dial("unix", string(a)[len("ipc://"):])
   139  }
   140  
   141  func TestIpcAbortHandshake(t *testing.T) {
   142  	sock := GetMockSocket()
   143  	defer MustClose(t, sock)
   144  	addr := AddrTestIPC()
   145  	l, e := sock.NewListener(addr, nil)
   146  	MustSucceed(t, e)
   147  	MustSucceed(t, l.Listen())
   148  	c, e := testAddr(addr).testDial()
   149  	MustSucceed(t, e)
   150  	MustSucceed(t, c.Close())
   151  }
   152  
   153  func TestIpcBadHandshake(t *testing.T) {
   154  	sock := GetMockSocket()
   155  	defer MustClose(t, sock)
   156  	addr := AddrTestIPC()
   157  	l, e := sock.NewListener(addr, nil)
   158  	MustSucceed(t, e)
   159  	MustSucceed(t, l.Listen())
   160  	TranSendConnBadHandshakes(t, testAddr(addr).testDial)
   161  }
   162  
   163  func TestIpcBadRecv(t *testing.T) {
   164  	sock := GetMockSocket()
   165  	defer MustClose(t, sock)
   166  	addr := AddrTestIPC()
   167  	l, e := sock.NewListener(addr, nil)
   168  	MustSucceed(t, e)
   169  	MustSucceed(t, l.Listen())
   170  	TranSendBadMessages(t, sock.Info().Peer, true, testAddr(addr).testDial)
   171  }
   172  
   173  func TestIpcSendAbort(t *testing.T) {
   174  	sock := GetMockSocket()
   175  	defer MustClose(t, sock)
   176  	addr := AddrTestIPC()
   177  	l, e := sock.NewListener(addr, nil)
   178  	MustSucceed(t, e)
   179  	MustSucceed(t, l.Listen())
   180  	c, e := testAddr(addr).testDial()
   181  	MustSucceed(t, e)
   182  	TranConnHandshake(t, c, sock.Info().Peer)
   183  	MustSend(t, sock, make([]byte, 1024*1024)) // TCP window size is 64k
   184  	time.Sleep(time.Millisecond * 100)
   185  	MustSucceed(t, c.Close())
   186  }