qiuhaohao / tcp

TCP server and client created for communication between Rpi and PC over Wi-Fi in MDP

tcp

TCP server and client created for communication between Rpi and PC over Wi-Fi in MDP

Usage

The module includes two classes: TCPServer and TCPClient. Both classes provides the same set of methods (send, recv, init_connection, reset_connection and is_connected) . The only difference is that the TCPServer should start listen by calling init_connection for incoming connection first before TCPClient attempts to init_connection. TCPServer connects with the first incoming connection it listens. Once the connection is established, string messages can be sent and received between the TCPServer and TCPClient.

In MDP, the rpi should be using TCPServer and the PC should be using TCPClient.

The follows is an example of using this module from a script under the folder containing this module:

### on server 

src/
    server.py
    tcp

# server.py

import time
from tcp import TCPServer

IP_SERVER = "192.168.5.5"
PORT_SERVER = 50000

s = TCPServer(IP_SERVER, PORT_SERVER)
s.init_connection()
n = 0
while n < 5:
    s.send(str(n))
    n += 1
    msg = s.recv()
    print("Server Received: {}".format(msg))
    time.sleep(1)

### on client 

src/
    client.py
    tcp

# client.py

import time
from tcp import TCPClient

IP_SERVER = "192.168.5.5"
PORT_SERVER = 50000

c = TCPClient(IP_SERVER, PORT_SERVER)
c.init_connection()
n = 0
while n < 5:
    c.send(str(n))
    n += 1
    msg = c.recv()
    print("Client Received: {}".format(msg))
    time.sleep(1)

Run the script on the server first, then on the client.

# on server @ 192.168.5.5
python server.py 
# Listening for incoming connections...
# Connected! Connection address:  ('192.168.5.6', 59777)
# Server Received: 0
# Server Received: 1
# Server Received: 2
# Server Received: 3
# Server Received: 4

# on client @ 192.168.5.6
python client.py 
# Trying to connect to server
# Connected! Connection address:  <socket.socket fd=3, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('192.168.5.6', 59777), raddr=('192.168.5.5', 50000)>
# Client Received: 0
# Client Received: 1
# Client Received: 2
# Client Received: 3
# Client Received: 4