2019-06-21 21:45:57 +00:00
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// Copyright 2019 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package flipcall
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import (
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"runtime"
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"sync"
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"testing"
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"time"
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)
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var testPacketWindowSize = pageSize
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type testConnection struct {
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pwa PacketWindowAllocator
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clientEP Endpoint
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serverEP Endpoint
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}
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func newTestConnectionWithOptions(tb testing.TB, clientOpts, serverOpts []EndpointOption) *testConnection {
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c := &testConnection{}
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if err := c.pwa.Init(); err != nil {
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tb.Fatalf("failed to create PacketWindowAllocator: %v", err)
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}
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pwd, err := c.pwa.Allocate(testPacketWindowSize)
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if err != nil {
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c.pwa.Destroy()
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tb.Fatalf("PacketWindowAllocator.Allocate() failed: %v", err)
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}
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if err := c.clientEP.Init(pwd, clientOpts...); err != nil {
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c.pwa.Destroy()
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tb.Fatalf("failed to create client Endpoint: %v", err)
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}
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if err := c.serverEP.Init(pwd, serverOpts...); err != nil {
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c.pwa.Destroy()
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c.clientEP.Destroy()
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tb.Fatalf("failed to create server Endpoint: %v", err)
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}
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return c
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}
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func newTestConnection(tb testing.TB) *testConnection {
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return newTestConnectionWithOptions(tb, nil, nil)
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}
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func (c *testConnection) destroy() {
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c.pwa.Destroy()
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c.clientEP.Destroy()
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c.serverEP.Destroy()
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}
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func testSendRecv(t *testing.T, c *testConnection) {
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var serverRun sync.WaitGroup
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serverRun.Add(1)
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go func() {
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defer serverRun.Done()
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t.Logf("server Endpoint waiting for packet 1")
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if _, err := c.serverEP.RecvFirst(); err != nil {
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t.Fatalf("server Endpoint.RecvFirst() failed: %v", err)
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}
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t.Logf("server Endpoint got packet 1, sending packet 2 and waiting for packet 3")
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if _, err := c.serverEP.SendRecv(0); err != nil {
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t.Fatalf("server Endpoint.SendRecv() failed: %v", err)
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}
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t.Logf("server Endpoint got packet 3")
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}()
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defer func() {
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// Ensure that the server goroutine is cleaned up before
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// c.serverEP.Destroy(), even if the test fails.
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c.serverEP.Shutdown()
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serverRun.Wait()
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}()
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t.Logf("client Endpoint establishing connection")
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if err := c.clientEP.Connect(); err != nil {
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t.Fatalf("client Endpoint.Connect() failed: %v", err)
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}
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t.Logf("client Endpoint sending packet 1 and waiting for packet 2")
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if _, err := c.clientEP.SendRecv(0); err != nil {
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t.Fatalf("client Endpoint.SendRecv() failed: %v", err)
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}
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t.Logf("client Endpoint got packet 2, sending packet 3")
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if err := c.clientEP.SendLast(0); err != nil {
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t.Fatalf("client Endpoint.SendLast() failed: %v", err)
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}
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t.Logf("waiting for server goroutine to complete")
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serverRun.Wait()
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}
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func TestSendRecv(t *testing.T) {
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c := newTestConnection(t)
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defer c.destroy()
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testSendRecv(t, c)
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}
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func testShutdownConnect(t *testing.T, c *testConnection) {
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var clientRun sync.WaitGroup
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clientRun.Add(1)
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go func() {
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defer clientRun.Done()
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if err := c.clientEP.Connect(); err == nil {
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t.Errorf("client Endpoint.Connect() succeeded unexpectedly")
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}
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}()
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time.Sleep(time.Second) // to allow c.clientEP.Connect() to block
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c.clientEP.Shutdown()
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clientRun.Wait()
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}
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func TestShutdownConnect(t *testing.T) {
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c := newTestConnection(t)
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defer c.destroy()
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testShutdownConnect(t, c)
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}
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func testShutdownRecvFirstBeforeConnect(t *testing.T, c *testConnection) {
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var serverRun sync.WaitGroup
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serverRun.Add(1)
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go func() {
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defer serverRun.Done()
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_, err := c.serverEP.RecvFirst()
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if err == nil {
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t.Errorf("server Endpoint.RecvFirst() succeeded unexpectedly")
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}
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}()
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time.Sleep(time.Second) // to allow c.serverEP.RecvFirst() to block
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c.serverEP.Shutdown()
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serverRun.Wait()
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}
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func TestShutdownRecvFirstBeforeConnect(t *testing.T) {
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c := newTestConnection(t)
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defer c.destroy()
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testShutdownRecvFirstBeforeConnect(t, c)
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}
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func testShutdownRecvFirstAfterConnect(t *testing.T, c *testConnection) {
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var serverRun sync.WaitGroup
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serverRun.Add(1)
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go func() {
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defer serverRun.Done()
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if _, err := c.serverEP.RecvFirst(); err == nil {
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t.Fatalf("server Endpoint.RecvFirst() succeeded unexpectedly")
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}
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}()
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defer func() {
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// Ensure that the server goroutine is cleaned up before
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// c.serverEP.Destroy(), even if the test fails.
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c.serverEP.Shutdown()
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serverRun.Wait()
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}()
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if err := c.clientEP.Connect(); err != nil {
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t.Fatalf("client Endpoint.Connect() failed: %v", err)
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}
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c.serverEP.Shutdown()
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serverRun.Wait()
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}
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func TestShutdownRecvFirstAfterConnect(t *testing.T) {
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c := newTestConnection(t)
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defer c.destroy()
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testShutdownRecvFirstAfterConnect(t, c)
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}
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func testShutdownSendRecv(t *testing.T, c *testConnection) {
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var serverRun sync.WaitGroup
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serverRun.Add(1)
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go func() {
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defer serverRun.Done()
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if _, err := c.serverEP.RecvFirst(); err != nil {
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t.Fatalf("server Endpoint.RecvFirst() failed: %v", err)
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}
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if _, err := c.serverEP.SendRecv(0); err == nil {
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t.Errorf("server Endpoint.SendRecv() succeeded unexpectedly")
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}
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}()
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defer func() {
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// Ensure that the server goroutine is cleaned up before
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// c.serverEP.Destroy(), even if the test fails.
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c.serverEP.Shutdown()
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serverRun.Wait()
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}()
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if err := c.clientEP.Connect(); err != nil {
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t.Fatalf("client Endpoint.Connect() failed: %v", err)
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}
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if _, err := c.clientEP.SendRecv(0); err != nil {
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t.Fatalf("client Endpoint.SendRecv() failed: %v", err)
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}
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time.Sleep(time.Second) // to allow serverEP.SendRecv() to block
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c.serverEP.Shutdown()
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serverRun.Wait()
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}
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func TestShutdownSendRecv(t *testing.T) {
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c := newTestConnection(t)
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defer c.destroy()
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testShutdownSendRecv(t, c)
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}
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func benchmarkSendRecv(b *testing.B, c *testConnection) {
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var serverRun sync.WaitGroup
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serverRun.Add(1)
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go func() {
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defer serverRun.Done()
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if b.N == 0 {
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return
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}
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if _, err := c.serverEP.RecvFirst(); err != nil {
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b.Fatalf("server Endpoint.RecvFirst() failed: %v", err)
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}
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for i := 1; i < b.N; i++ {
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if _, err := c.serverEP.SendRecv(0); err != nil {
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b.Fatalf("server Endpoint.SendRecv() failed: %v", err)
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}
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}
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if err := c.serverEP.SendLast(0); err != nil {
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b.Fatalf("server Endpoint.SendLast() failed: %v", err)
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}
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}()
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defer func() {
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c.serverEP.Shutdown()
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serverRun.Wait()
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}()
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2019-07-31 19:54:49 +00:00
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if err := c.clientEP.Connect(); err != nil {
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b.Fatalf("client Endpoint.Connect() failed: %v", err)
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}
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runtime.GC()
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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if _, err := c.clientEP.SendRecv(0); err != nil {
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b.Fatalf("client Endpoint.SendRecv() failed: %v", err)
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}
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}
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b.StopTimer()
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}
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func BenchmarkSendRecv(b *testing.B) {
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c := newTestConnection(b)
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defer c.destroy()
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benchmarkSendRecv(b, c)
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}
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