用go搭建tcp服务器,实在很方便,调用C写的底层应用也很方便,有些特别注意的地方,红色标记,以便以后查阅
package main
/*
#cgo LDFLAGS: -Llib -lwiringPi //编译时链接wiringPi库
#include <stdio.h>
#include <unistd.h>
#include "wiringPi.h"
void ctest(){
wiringPiSetup();
pinMode(2,OUTPUT);
while(1){
digitalWrite(2,HIGH);
sleep(1);
digitalWrite(2,LOW);
sleep(1);
}
}
*/
import "C"
import (
"fmt"
"time"
"net"
)
func main(){
fmt.Println("hello,i am GO")
go C.ctest()
time.Sleep(time.Second)
fmt.Println("Starting the server ...")
// 创建 listener
listener, err := net.Listen("tcp", "192.168.1.166:50000")
if err != nil {
fmt.Println("Error listening", err.Error())
return //终止程序
}
// 监听并接受来自客户端的连接
for {
conn, err := listener.Accept()
if err != nil {
fmt.Println("Error accepting", err.Error())
return // 终止程序
}
go doServerStuff(conn)
}
}
func doServerStuff(conn net.Conn) {
for {
buf := make([]byte, 512)
len, err := conn.Read(buf)
if err != nil {
fmt.Println("Error reading", err.Error())
return //终止程序
}
fmt.Printf("Received data: %v\n", string(buf[:len]))
conn.Write([]byte("hello client!"))
}
}