socket连接测试工具，window和linux下

叁歲伎倆 2021-11-17 11:22 3016阅读 0赞

## 一、windows ##

**socketTool**

[SocketTool工具(模拟开发板)和基于socket的java服务器(TCP/IP协议)开发][SocketTool_socket_java_TCP_IP]

## 二、linux ##

**server:**

import socket
    import os
    server = socket.socket()
    server.bind(('localhost',6971)) #绑定要监听地址和端口 如果是监听所有
    server.listen(5) #监听
    
    print("我要开始等电话了")
    while True:
        conn, addr = server.accept()  # 等电话打进来 conn:服务端生成的实例,接受新实例,addr:客户端的地址
        # conn就是客户端连过来而在服务器端为其生成的一个连接实例
        print(conn, addr)
        print("电话来了")
        # count = 0
        while True:
            data = conn.recv(1024)  #8192
            print("recv:",data)
            if not data:                             ###如果不判断，当client断开之后，server 就会死循环接受空数据.
                print("client has lost...")
                break
            # conn.send(data.upper())
            res = os.popen(data.decode("utf-8")).read()
            print(len(res))
            if len(res)==0:
                res="res is empty"
                # res=b"res has empty"
    
            #res = os.popen(data).read() ###如果这么写就会报错。
            ''' Traceback (most recent call last): File "D:/PycharmProjects/untitled/day8/sockserver.py", line 22, in <module> res = os.popen(data).read() File "D:\Python\Python36-32\lib\os.py", line 968, in popen raise TypeError("invalid cmd type (%s, expected string)" % type(cmd)) TypeError: invalid cmd type (<class 'bytes'>, expected string) '''
            conn.send(str(len(res.encode())).encode("utf-8"))             ##发送到client数据的size
            client_ack = conn.recv(1024)                                  ##这两行是为了防止粘包
            print("准备发送了",client_ack.decode("utf-8"))
            conn.send(res.encode("utf-8"))
            # conn.send(res) ###如果这么写就会报错
            ''' 如果不decode("utf-8") conn.send(res) TypeError: a bytes-like object is required, not 'str' '''
            # count+=1
            # if count >10:break
    
    server.close()

**client:**

#-*-coding:utf-8-*-
    import socket
    client=socket.socket()#默认famliy=AF_INET(ipv4)地址簇 type=SOCK_STREAM (tcp/ip) 声明socket类型，同时生成socket连接对象
    client.connect(("localhost",6971))
    
    while True:
        msg=input("请输入:").strip()  #不能发送空数据
        if len(msg)==0:continue    #如果msg长度为0，就继续 ，重新发
        client.send(msg.encode("utf-8")) #3.x 只能发bytes类型数据，只能接收ASCII数据，汉字不行,要发汉字只能编码成utf-8格式
        data=client.recv(102400) #收102400字节数据
        print(data.decode("utf-8")) #bytes类型打印出来要解码
    
    client.close()

或：  
netcat？  
tcpdump？  
[https://www.cnblogs.com/gildoringlorin/p/3948809.html][https_www.cnblogs.com_gildoringlorin_p_3948809.html]

[SocketTool_socket_java_TCP_IP]: https://www.jianshu.com/p/2823a7393e58
[https_www.cnblogs.com_gildoringlorin_p_3948809.html]: https://www.cnblogs.com/gildoringlorin/p/3948809.html