如何使用socket.recv（）获取完全发送的数据？

Question

I have faced with some problems on python. I try to read sent data with socket.recv(1024) , but sometime data is very long than 1024 bytes. I try this code:

data = b''
received = s.recv(1024)
    while len(received) > 0:
        data = data + received
        received = s.recv(1024)

But while loops code infinity. How to i fix it?

Answer 1

Here's how you might handle this (untested):

MINIMUM_PACKET_LENGTH = 100
data = b''
while True:
    try:
        received = s.recv(1024)
    except:
        # you might put code here to handle the exception,
        # but otherwise:
        raise
    data = data + received
    while len(data) >= MINIMUM_PACKET_LENGTH:
        # consume a packet from the data buffer, but leave unused bytes in data
        packet = data[0:MINIMUM_PACKET_LENGTH]
        data = data[MINIMUM_PACKET_LENGTH:]
        # process packet (you could maybe use 'yield packet')
        # ....