python - 如何使用Python和socket发送和接收？

Question

我想发送到一个服务器，他有一个树莓派和一个在 Windows 上运行的客户端。问题是客户端可以连接，但之后，它仅在我关闭套接字时才发送消息。更进一步，可能原因是我使用了端口转发。

enter image description here

我的服务器代码

import socket
import sys

# Create a TCP/IP socket
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# Bind the socket to the address given on the command line
server_address = ('', 1234)
sock.bind(server_address)
print >>sys.stderr, 'starting up on %s port %s' % sock.getsockname()
sock.listen(1)

while True:
    print >>sys.stderr, 'waiting for a connection'
    connection, client_address = sock.accept()
    try:
        print >>sys.stderr, 'client connected:', client_address
        while True:
            data = connection.recv(16)
            print >>sys.stderr, 'received "%s"' % data
            if data:
                connection.sendall(data)
            else:
                break
    finally:
        connection.close()

和客户端

# coding: utf-8

import socket

socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

socket.connect(("", 1234))

user_tab=input("What do you want to send?")
data=(str(user_tab))
print(data)
data = data.encode("utf-8")
socket.sendall(data)

print("send all")

d=socket.recv(128)
socket.close()
host, port =('', 1234)

socket.close()

Answer 1

抱歉，但我不明白你所说的问题。

客户端代码:

user_tab = input("What do you want to send?")
data = (str(user_tab))
print(data)
data = data.encode("utf-8")
socket.sendall(data)
print("send all")

user_tab = input("something else?")

d=socket.recv(1024)
socket.close()

ScreenShot