github.com/gdamore/mangos@v1.4.0/test/expire_test.go (about)

     1  // Copyright 2018 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  package test
    16  
    17  import (
    18  	"bytes"
    19  	"runtime"
    20  	"testing"
    21  	"time"
    22  
    23  	"nanomsg.org/go-mangos"
    24  	"nanomsg.org/go-mangos/protocol/pair"
    25  	"nanomsg.org/go-mangos/transport/inproc"
    26  )
    27  
    28  func TestExpireDrop(t *testing.T) {
    29  	inp := inproc.NewTransport()
    30  	addr := AddrTestInp + "EXPIRE"
    31  
    32  	if runtime.GOOS == "windows" {
    33  		t.Skip("Windows clock resolution too coarse")
    34  		return
    35  	}
    36  	srv, err := pair.NewSocket()
    37  	if err != nil {
    38  		t.Errorf("Failed to make server: %v", err)
    39  		return
    40  	}
    41  	defer srv.Close()
    42  	srv.AddTransport(inp)
    43  
    44  	err = srv.Listen(addr)
    45  	if err != nil {
    46  		t.Errorf("Failed listen: %v", err)
    47  		return
    48  	}
    49  
    50  	cli, err := pair.NewSocket()
    51  	if err != nil {
    52  		t.Errorf("Failed to make client: %v", err)
    53  		return
    54  	}
    55  	defer cli.Close()
    56  
    57  	cli.AddTransport(inp)
    58  
    59  	err = cli.Dial(addr)
    60  	if err != nil {
    61  		t.Errorf("Failed dial: %v", err)
    62  		return
    63  	}
    64  
    65  	time.Sleep(time.Millisecond * 100)
    66  
    67  	err = srv.SetOption(mangos.OptionRecvDeadline, time.Millisecond*10)
    68  	if err != nil {
    69  		t.Errorf("Failed set recv deadline")
    70  		return
    71  	}
    72  
    73  	if err = cli.Send([]byte("GOOD")); err != nil {
    74  		t.Errorf("Failed first send: %v", err)
    75  		return
    76  	}
    77  	// Now try setting the option.  We set it to a very short window.
    78  	// Note that we default to have a non-zero queue depth, so we will
    79  	// still queue the message, but then when we retrieve the message
    80  	// it will be found to be stale.
    81  	err = cli.SetOption(mangos.OptionSendDeadline, time.Nanosecond*1)
    82  	if err != nil {
    83  		t.Errorf("Failed set send deadline")
    84  		return
    85  	}
    86  
    87  	if err = cli.Send([]byte("DROP")); err != nil {
    88  		t.Errorf("Failed send drop: %v", err)
    89  		return
    90  	}
    91  
    92  	v, err := srv.Recv()
    93  	if err != nil {
    94  		t.Errorf("Failed first recv: %v", err)
    95  		return
    96  	} else if !bytes.Equal(v, []byte("GOOD")) {
    97  		t.Errorf("Got wrong message: %v", v)
    98  		return
    99  	} else {
   100  		t.Logf("Got good message: %v", v)
   101  	}
   102  
   103  	v, err = srv.Recv()
   104  	switch err {
   105  	case mangos.ErrRecvTimeout: // expected
   106  		t.Logf("Deadline honored")
   107  	case nil:
   108  		t.Errorf("Message not dropped: %v", v)
   109  	default:
   110  		t.Errorf("Got unexpected error: %v", err)
   111  	}
   112  }