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今天就跟大家聊聊有關GO語言中怎么實現(xiàn)一個TCP服務,可能很多人都不太了解,為了讓大家更加了解,小編給大家總結了以下內(nèi)容,希望大家根據(jù)這篇文章可以有所收獲。
具體實現(xiàn)方法如下:
package main
import (
"net"
"fmt"
)
var ( maxRead = 1100
msgStop = []byte("cmdStop")
msgStart = []byte("cmdContinue")
)
func main() {
hostAndPort := "localhost:54321"
listener := initServer(hostAndPort)
for {
conn, err := listener.Accept()
checkError(err, "Accept: ")
go connectionHandler(conn)
}
}
func initServer(hostAndPort string) *net.TCPListener {
serverAddr, err := net.ResolveTCPAddr("tcp", hostAndPort)
checkError(err, "Resolving address:port failed: '" + hostAndPort + "'")
listener, err := net.ListenTCP("tcp", serverAddr)
checkError(err, "ListenTCP: ")
println("Listening to: ", listener.Addr().String())
return listener
}
func connectionHandler(conn net.Conn) {
connFrom := conn.RemoteAddr().String()
println("Connection from: ", connFrom)
talktoclients(conn)
for {
var ibuf []byte = make([]byte, maxRead + 1)
length, err := conn.Read(ibuf[0:maxRead])
ibuf[maxRead] = 0 // to prevent overflow
switch err {
case nil:
handleMsg(length, err, ibuf)
default:
goto DISCONNECT
}
}
DISCONNECT:
err := conn.Close()
println("Closed connection:" , connFrom)
checkError(err, "Close:" )
}
func talktoclients(to net.Conn) {
wrote, err := to.Write(msgStart)
checkError(err, "Write: wrote " + string(wrote) + " bytes.")
}
func handleMsg(length int, err error, msg []byte) {
if length > 0 {
for i := 0; ; i++ {
if msg[i] == 0 {
break
}
}
fmt.Printf("Received data: %v", string(msg[0:length]))
fmt.Println(" length:",length)
}
}
func checkError(error error, info string) {
if error != nil {
panic("ERROR: " + info + " " + error.Error()) // terminate program
}
}
看完上述內(nèi)容,你們對GO語言中怎么實現(xiàn)一個TCP服務有進一步的了解嗎?如果還想了解更多知識或者相關內(nèi)容,請關注億速云行業(yè)資訊頻道,感謝大家的支持。
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