我正在尝试制作一个server-client
程序,其中server
将侦听client's
消息,并根据消息进行响应。我使用client
和username
从content
发送了一条消息,server
接受并打印一条消息发送给client
,直到这里一切都很好。但是,当发送邮件server
时会抛出错误:
`TypeError: byte indices must be integers or slices, not str`
这行似乎是问题所在,但我不确定。...
`clientsocket.send(msg['header'] + msg['data'])`
这是完整的服务器代码。如果也需要client
代码,请告诉我。
import socket
import time
import pickle
import select
HEADERSIZE = 10
IP = "127.0.0.1"
PORT = 1234
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.bind((IP, PORT))
s.listen()
sockets_list = [s]
clients = {}
# Handles message receiving
def receive_message(clientsocket):
try:
message_header = clientsocket.recv(HEADERSIZE)
if not len(message_header):
return False
message_length = int(message_header.decode('utf-8').strip())
return {'header': message_header, 'data': clientsocket.recv(message_length)}
except:
return False
while True:
read_sockets, _, exception_socket = select.select(sockets_list, [], sockets_list)
for notified_socket in read_sockets:
if notified_socket == s:
clientsocket, address = s.accept()
user = receive_message(clientsocket)
if user is False:
continue
sockets_list.append(clientsocket)
clients[clientsocket] = user
print(f"Connection from {address[0]}:{address[1]} has been estabilished! User:{user['data'].decode('utf-8')}")
else:
message = receive_message(notified_socket)
if message is False:
print(f"Close connection from {clients[notified_socket]['data'].decode('utf-8')}")
sockets_list.remove(notified_socket)
del clients[notified_socket]
continue
user = clients[notified_socket]
#message_decoded = message['data'].decode('utf-8')
print(f'Received message from {user["data"].decode("utf-8")}: {message["data"].decode("utf-8")}')
for clientsocket in clients:
if clientsocket == notified_socket:
if message["data"].decode("utf-8") == "y":
#d = {1: "Hey", 2: "there"}
msg = pickle.dumps("th.jpeg")
print(msg)
msg = bytes(f'{len(msg):<{HEADERSIZE}}', "utf-8") + msg
clientsocket.send(msg['header'] + msg['data'])
else:
d = {1: "Hey", 2: "there"}
msg = pickle.dumps(d)
print(msg)
# msg = bytes(f'{len(msg):<{HEADERSIZE}}', "utf-8") + msg
clientsocket.send(msg['header'] + msg['data'])
for notified_socket in exception_socket:
sockets_list.remove(notified_socket)
del clients[notified_socket]
HERE是一个完整的错误代码:
Connection from 127.0.0.1:48480 has been estabilished! User:j
Received message from j: y
b'\x80\x03X\x07\x00\x00\x00th.jpegq\x00.'
Traceback (most recent call last):
File "server.py", line 69, in <module>
clientsocket.send(msg['header'] + msg['data'])
TypeError: byte indices must be integers or slices, not str
如您所见,它在发送消息行之前一直有效
答案 0 :(得分:1)
msg = pickle.dumps("th.jpeg")
会将字符串"th.jpeg"
编码为字节对象。
msg = bytes(f'{len(msg):<{HEADERSIZE}}', "utf-8") + msg
只是将字节对象添加到另一个字节对象。
因此msg
是一个简单的字节对象,不是任何类型的服务器数据包或类似数据包。因此,无法通过msg
或任何其他字符串来订阅msg['header']
。
您的代码似乎有点奇怪,但也许只需尝试以下行即可:
clientsocket.send(msg)
由于您已经将msg
转换为字节对象,因此可以将其直接发送到客户端。您只需要在客户端正确解码即可。