我一直在尝试使用python进行网络编程。为了教我自己如何做到这一点,我一直在玩多个版本的TCP聊天服务器和客户端。我最新的尝试让我想知道我刚刚编写的代码有什么问题。只有当我刚刚创建的客户端发送了一条消息时,其他消息才会进入。我不确定为什么会发生这种情况。我一直在网上搜索,我无法弄清楚它为什么会发生。我所知道的是,这不是服务器的错误。我确信问题出在我刚创建的客户端上。
import socket, thread, threading, os
def sendMsg():
Message = raw_input('[-]You:')
s.send(Message)
def recvMsg():
data = s.recv(buff)
print(data)
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
host = raw_input('[-]Target Ip-> ')
port = 5000
buff = 1024
try:
s.connect((host, port))
except:
print('[-]Failed to Connect')
s.close()
loop = True
threads = []
while loop == True:
try:
t1 = threading.Thread(target=sendMsg())
threads.append(t1)
t1.start()
t2 = threading.Thread(target=recvMsg())
threads.append(t2)
t2.start()
except KeyboardInterrupt:
print('\n')
break
s.close()
os.system('clear')
服务器代码
# Tcp Chat server
import socket, select, os, time
def broadcast_data (sock, message):
for socket in CONNECTION_LIST:
if socket != server_socket and socket != sock :
try :
socket.send(message)
except :
socket.close()
CONNECTION_LIST.remove(socket)
if __name__ == "__main__":
CONNECTION_LIST = []
RECV_BUFFER = 4096
IP_MNG = ''
PORT = 5000
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
server_socket.bind((IP_MNG, PORT))
server_socket.listen(10)
CONNECTION_LIST.append(server_socket)
print "[-]Connected To " + str(PORT)
start = True
while start == True:
try:
read_sockets,write_sockets,error_sockets = select.select(CONNECTION_LIST,[],[])
for sock in read_sockets:
if sock == server_socket:
sockfd, addr = server_socket.accept()
CONNECTION_LIST.append(sockfd)
print "Client (%s, %s) connected" % addr
broadcast_data(sockfd, "[-][%s:%s] entered room\n" % addr)
else:
try:
data = sock.recv(RECV_BUFFER)
if data:
broadcast_data(sock, "\r" + '<' + str(sock.getpeername()) + '> ' + data)
except:
broadcast_data(sock, "Client (%s, %s) is offline" % addr)
print "Client (%s, %s) is offline" % addr
sock.close()
CONNECTION_LIST.remove(sock)
continue
except KeyboardInterrupt:
print('[-]Server Stopped')
start = False
server_socket.close()
time.sleep(1)
os.system('clear')
答案 0 :(得分:0)
我对套接字编程很新,所以这可能是darK中的一个镜头:
在服务器上,accept
ed连接是否应标记为非阻塞?
sockfd, addr = server_socket.accept()
sockfd.setblocking(0)
在服务器上,您是否需要管理套接字何时可写?它看起来像套接字,因为它们变得可读。我想在读取调用期间会socket.send
阻塞,因此在此期间不会处理新连接。 Python module of the week有非常明显的例子,将select
用于非阻止服务器