我在套接字 python 程序中找不到错误

Question

我正在遵循套接字教程，突然在我的代码中有一个错误，我无法理解或找到

谁能帮我找到这个bug?我参考了教程代码，它不起作用。唯一的方法是复制/粘贴，我不喜欢它 这是我的server.py文件

import socket
import threading
HEADER = 64
FORMAT = 'utf-8'
PORT = 5050
DISCONNECTED_ADDR = "!disCONNECTED"
SERVER = socket.gethostbyname(socket.gethostname())
print(SERVER)
ADDR = (SERVER, PORT)
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.bind(ADDR)
def handle_client(conn, addr):
print(f"[NEW CONNECTION] {addr} connected.")
connected = True
while connected:
msg_length = conn.recv(HEADER).decode(FORMAT)
if msg_length:
msg_length = int(msg_length)
msg = conn.recv(msg_length).decode(FORMAT)
if msg == DISCONNECTED_ADDR:
connected = False
print(f"[{addr}] {msg}")
conn.send("Msg received".encode(FORMAT))
conn.close()
def main():
print(f"[LISTENING] Server listening on {SERVER}")
server.listen()
while True:
conn, addr = server.accept()
thread = threading.Thread(target=handle_client, args=(conn, addr))
thread.start()
print("STARTED")

print("APP STARTED")
main()

这是client。py文件

import socket
HEADER = 64
FORMAT = 'utf-8'
PORT = 5050
DISCONNECTED_ADDR = "!disCONNECTED"
SERVER = "#myipaddress"
ADDR = (SERVER, PORT)
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect(ADDR)
def send(msg):
message = msg.encode(FORMAT)
msg_length = len(message)
send_length = str(msg_length).encode(FORMAT)
send_length += b' ' * (HEADER - len(send_length)-1)
client.send(send_length)
client.send(message)
print(client.recv(2048).decode(FORMAT))

send("Hello World!")
input()
send("Hello Everyone!")
input()
send("Hello Tim!")
send(DISCONNECTED_ADDR)

Answer 1

谁能帮我找到这个bug?

send_length += b' ' * (HEADER - len(send_length)-1)

您错误地计算了客户端报头的填充长度。我不知道为什么你认为1的减量是必要的-它是不合适的，正确的:

send_length += b' ' * (HEADER - len(send_length))