Python基于socket實現(xiàn)TCP/IP客戶和服務(wù)器通信

import socket

# 1.創(chuàng)建一個套接字，
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# 2.使用bind()函數(shù)將套接字與服務(wù)器地址關(guān)聯(lián)
sock.bind(('localhost', 10000))
# 3.調(diào)用listen()函數(shù)將套接字設(shè)置為服務(wù)器模式
sock.listen(1)

while True:
    # 4.調(diào)用accept()等待客戶端的消息連接
    # 如果有客戶端進行連接，那么accept()函數(shù)會返回一個打開的連接與客戶端地址
    connection, client_address = sock.accept()
    print("連接客戶端地址：", client_address)
    try:
        # 5.指明一個緩沖區(qū)，該緩沖區(qū)用來存放recv函數(shù)接收到的數(shù)據(jù)
        data = connection.recv(1024)
        print(data)
        if data:
            # 6.通過sendall()進行回傳客戶端數(shù)據(jù)。
            connection.sendall("已接受到數(shù)據(jù)".encode())
        else:
            print("客戶端沒有發(fā)送數(shù)據(jù)，不需要傳送數(shù)據(jù)")
    finally:
        #7.需要使用close()進行關(guān)閉清理
        connection.close()

import socket

# 1.創(chuàng)建一個套接字，
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# 2.使用bind()函數(shù)將套接字與服務(wù)器地址關(guān)聯(lián)
sock.connect(('localhost', 10000))

try:
    msg = b"Are you there?"
    # 3.通過sendall()向服務(wù)器發(fā)送數(shù)據(jù)
    sock.sendall(msg)
    # 4.通過recv()接受服務(wù)器傳遞回的數(shù)據(jù)
    data = sock.recv(1024)
    print(data.decode())
finally:
    # 5.交互完成之后，使用close()關(guān)閉清理
    sock.close()

import socket

# 獲取匹配開頭字符串的所有屬性值
def getConstants(prefix):
    return {
        getattr(socket, n): n
        for n in dir(socket)
        if n.startswith(prefix)
    }
    
ipproto_str = getConstants("IPPROTO_")
family_str = getConstants("AF_")
type_str = getConstants("SOCK_")

sock = socket.create_connection(('127.0.0.1', 10000))
print(ipproto_str[sock.proto])
print(family_str[sock.family])
print(type_str[sock.type])

try:
    msg = b"Are you there?"
    sock.sendall(msg)
    data = sock.recv(1024)
    print(data.decode())
finally:
    sock.close()