import socket
def main():
  # 創(chuàng)建套接字
  tcp_socket=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
  # 連接服務(wù)器
  #tcp_socket.connect(("172.17.3.97",8080))
  server_ip = input("請(qǐng)輸入要鏈接的服務(wù)器ip：")
  server_port = int(input("請(qǐng)輸入要鏈接的服務(wù)器port："))
  server_addr = (server_ip,server_port)
  tcp_socket.connect(server_addr)
  # 發(fā)送數(shù)據(jù)/接收數(shù)據(jù)
  send_data = input("請(qǐng)輸入要發(fā)送的數(shù)據(jù)：")
  tcp_socket.send(send_data.encode("gbk"))
  #關(guān)閉套接字
  tcp_socket.close()
if __name__ == "__main__":
  main()

import socket
def main():
  # 創(chuàng)建套接字
  tcp_server_socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
# 綁定本地信息
tcp_server_socket.bind("",7890)
# 讓默認(rèn)套接字由主動(dòng)變?yōu)楸粍?dòng)listen
tcp_server_socket.listen(128)
while True:
  print("等待一個(gè)新的客戶端......")
  # 等待客戶端的連接 accept
  new_client_socket ,client_addr = tcp_server_socket.accept()
  print("一個(gè)新的客戶端已到來(lái)%s" %str(client_addr))
  while True:
    # 接受客戶端發(fā)過(guò)來(lái)的請(qǐng)求
    recv_data = new_client_socket.recv(1024)
    print("客戶端發(fā)來(lái)的請(qǐng)求是%s" %recv_data.decode("gbk"))
    # 如果recv解堵塞，那么有兩種方式：
    # 1.客戶端發(fā)來(lái)數(shù)據(jù)
    # 2.客戶端調(diào)用close
    if recv_data:
      # 回送一部分?jǐn)?shù)據(jù)給客戶端
      new_client_socket.send("hahaha".encode("gbk"))
    else:
      break
  # 關(guān)閉套接字
  new_client_socket.close()
  print("服務(wù)完畢，謝謝光臨！")
# 如果將監(jiān)聽套接字關(guān)閉，會(huì)導(dǎo)致不能再次等待新的客戶端到來(lái)
tcp_server_socket.close()
if __name__ == "__main__":
  main()