diff options
Diffstat (limited to 'pkg/flipcall/flipcall_example_test.go')
-rw-r--r-- | pkg/flipcall/flipcall_example_test.go | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/pkg/flipcall/flipcall_example_test.go b/pkg/flipcall/flipcall_example_test.go deleted file mode 100644 index 8d88b845d..000000000 --- a/pkg/flipcall/flipcall_example_test.go +++ /dev/null @@ -1,112 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package flipcall - -import ( - "bytes" - "fmt" - "sync" -) - -func Example() { - const ( - reqPrefix = "request " - respPrefix = "response " - count = 3 - maxMessageLen = len(respPrefix) + 1 // 1 digit - ) - - pwa, err := NewPacketWindowAllocator() - if err != nil { - panic(err) - } - defer pwa.Destroy() - pwd, err := pwa.Allocate(PacketWindowLengthForDataCap(uint32(maxMessageLen))) - if err != nil { - panic(err) - } - var clientEP Endpoint - if err := clientEP.Init(ClientSide, pwd); err != nil { - panic(err) - } - defer clientEP.Destroy() - var serverEP Endpoint - if err := serverEP.Init(ServerSide, pwd); err != nil { - panic(err) - } - defer serverEP.Destroy() - - var serverRun sync.WaitGroup - serverRun.Add(1) - go func() { - defer serverRun.Done() - i := 0 - var buf bytes.Buffer - // wait for first request - n, err := serverEP.RecvFirst() - if err != nil { - return - } - for { - // read request - buf.Reset() - buf.Write(serverEP.Data()[:n]) - fmt.Println(buf.String()) - // write response - buf.Reset() - fmt.Fprintf(&buf, "%s%d", respPrefix, i) - copy(serverEP.Data(), buf.Bytes()) - // send response and wait for next request - n, err = serverEP.SendRecv(uint32(buf.Len())) - if err != nil { - return - } - i++ - } - }() - defer func() { - serverEP.Shutdown() - serverRun.Wait() - }() - - // establish connection as client - if err := clientEP.Connect(); err != nil { - panic(err) - } - var buf bytes.Buffer - for i := 0; i < count; i++ { - // write request - buf.Reset() - fmt.Fprintf(&buf, "%s%d", reqPrefix, i) - copy(clientEP.Data(), buf.Bytes()) - // send request and wait for response - n, err := clientEP.SendRecv(uint32(buf.Len())) - if err != nil { - panic(err) - } - // read response - buf.Reset() - buf.Write(clientEP.Data()[:n]) - fmt.Println(buf.String()) - } - - // Output: - // request 0 - // response 0 - // request 1 - // response 1 - // request 2 - // response 2 -} |