How to receive entire data comming from server in python socket

Question

I am Using Python socket lib, i want to receive the entire data coming from server i have tried using loops but it stucking after reading the data.

    def readReply(self):
        recv_data = b''
        while True:
            data = self.client_socket.recv(1024)
            if data:
                recv_data += data
            else:
                break
        return recv_data

You're collecting the data in a variable named recv_data, but then you return a different variable named buffer. — John Gordon
– John Gordon, Commented Aug 29, 2022 at 2:51
@Jocefyneroot is that really the problem? Aren't you stuck on self.client_socket.recv(1024)? If the socket is in blocking mode and no data is received, this function will block the thread forever. Setting a timeout before receiving any data and using a try-except block to catch the timeout exception should be the way to go. — Carl HR
– Carl HR, Commented Aug 29, 2022 at 3:15

Carl HR · Accepted Answer · 2022-08-29 03:31:51Z

1

What I mean about the timeout is this:

def readReply(self):
    recv_data = b''

    # This will block the socket for 0.1s
    #
    # If you have a poor internet connection, you
    # may need to increase this value to a higher
    # one.
    self.client_socket.settimeout(0.1)
    while True:
        try:
            data = self.client_socket.recv(1024)
        except:
            break
        else:
            recv_data += data

    return recv_data

Once the timeout is reached, the while-loop will break. Note: if you don't want to freeze the main thread while waiting for the incoming data (in case you're using a GUI), you should use multithreading.

answered Aug 29, 2022 at 3:31

Carl HR

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