目录
-
- [grpc service 的实现](#grpc service 的实现)
-
- grpc服务通过unix域监听请求
- 建立与代理服务的tcp连接
- [请求转发到 unix 上](#请求转发到 unix 上)
- 代码地址
grpc service 的实现
假设 grpc service 的服务名是 Bar
grpc服务通过unix域监听请求
```go
svr := grpc.NewServer()
messages.RegisterBarServer(svr, bar.New())
reflection.Register(svr)
os.Remove(sockPath)
lis, err := net.Listen("unix", sockPath)
if err != nil {
log.Fatalf("failed to listen: %v", err)
}
go func() {
if err := svr.Serve(lis); err != nil {
log.Fatalf("failed to serve: %v", err)
}
}()
```建立与代理服务的tcp连接
go
// 与代理服务器建立连接
conn, err := tls.Dial("tcp", fmt.Sprintf("127.0.0.1:%d", tcp_server.Port), &tls.Config{InsecureSkipVerify: true})
if err != nil {
log.Printf("dial tcp failed: %v\n", err)
return err
}
// 与代理服务器通信，告诉它 是提供服务者
firstWrite := &tcp_server.Device{ID: deviceID, Type: tcp_server.DeviceTypeServer}
writeData, err := json.Marshal(firstWrite)
if err != nil {
log.Printf("marshal first write failed: %v\n", err)
return err
}
_, err = conn.Write(append(writeData, tcp_server.MessageEnd))
if err != nil {
log.Printf("write first write failed: %v\n", err)
return err
}
bufBytes, err := tcp_server.ReadData(conn)
if err != nil {
log.Printf("read first write failed: %v\n", err)
return err
}
recvData := &tcp_server.OK{}
err = json.Unmarshal(bufBytes, recvData)
if err != nil {
log.Printf("unmarshal first write failed: %v\n", err)
return err
}
if recvData.Code < 0 {
log.Printf("first write failed: %v\n", recvData.Code)
return errors.New("first write failed")
}请求转发到 unix 上
go
// 与本地的 unix 建立连接
unixConn, err := net.Dial("unix", sockPath)
if err != nil {
log.Fatalf("failed to dial unix: %v", err)
}
go func() {
defer wg.Done()
_, err = io.Copy(conn, unixConn)
if err != nil {
log.Printf("io.Copy failed: %v\n", err)
return
}
fmt.Println("copy conn end")
}()
go func() {
defer wg.Done()
_, err = io.Copy(unixConn, conn)
if err != nil {
log.Printf("io.Copy failed unixConn: %v\n", err)
return
}
fmt.Println("copy unixConn end")
}()
return nil