Make server and client model

Author: Zaidtech

CLient.py

@@ -0,0 +1,22 @@
+import socket
+
+client_socket = socket.socket()
+
+HOST = '127.0.0.1'
+PORT = 1233
+ 
+try:
+    client_socket.connect((HOST,PORT))
+except:
+    print("Error occured in connecting ")
+
+Response =client_socket.recv(1024)
+print(Response.decode('utf-8')) 
+while True:
+    msg = input("Enter the msg")
+    client_socket.send(str.encode(msg))
+    responce = client_socket.recv(1024)
+    print(responce.decode('utf-8'))
+
+client_socket.close()
+ 

Mutithreading_servers.py

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+# to solve the problem of concurency 
+# handling multiple clients using the thread module in python
+#  for two clients
+
+import socket
+from _thread import *
+
+server_socket = socket.socket()
+
+HOST = '127.0.0.1'
+PORT = 1233
+
+thread_count = 0
+
+try:
+    server_socket.bind((HOST, PORT))
+except socket.error as err:
+    print(err)
+print("Waiting for a  connection")
+server_socket.listen(5)
+# that handles diff clients 
+def client_thread(connection):
+    connection.send(str.encode("Welcome to the server"))
+    while True:
+        data = connection.recv(2048)
+        reply = "Hellow, I am a server "+ data.encode('utf-8')
+        if not data:
+            break
+        connection.sendall(str.encode(reply))
+    connection.close()
+
+while True:
+    client, address = server_socket.accept()
+    print(f"connected to {address[0]} - {str(address[1])}") 
+    start_new_thread(client_thread, (client, ))
+    thread_count+=1
+    print(f"No of servers connected are {thread_count}")
+server_socket.close()
+
+
+
+
+

TCP_client.py

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+import socket
+
+client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    # takes the tuple of the address and the port no
+while True:
+    client_socket.connect(("172.31.26.173", 8080))
+
+payload = "Hey server"
+
+try:
+    while True:
+        client_socket.send(payload.encode("utf-8"))
+        data = client_socket.recv(2048000)
+        print(f" Received :", data.decode("utf-8"))
+        payload = input("Enter your msg-> ")
+except:
+    pass

TCP_server.py

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+#  this is a tcp server which will be sending the data from the client and also receiving it after 
+# connection has been established
+
+import socket   
+server_socket=socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+#  server has a listen mode to hear for the new_connections to it
+server_socket.bind(("192.168.1.7", 800))
+#  the server has a bind method which binds it to a port and an ip so that it can listen to  requests 
+# on that particular port and addrs.
+server_socket.listen(5) #it is a limit of the no of connections 
+
+while True:
+    print("Server waiting for a connection")
+    client_socket, addr = server_socket.accept()
+    print("client connected from ", addr)
+    while True:
+        data = client_socket.recv(2048000)
+        if not data: #--->
+            break 
+        print(f"From other side:-> ",data.decode("utf-8"))
+        # print(f"Reeived Data form the client in the decoded form ", data.decode("utf-8"))
+        try:
+            msg = input("Enter your msg here:-> ")
+            client_socket.send(bytes(msg, 'utf-8'))
+        except:
+            print("Exited by the user")
+    client_socket.close()
+server_socket.close()

UDP_client.py

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+import socket
+
+client_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+
+msg = "Hellow client here"
+client_sock.sendto( msg.encode('utf-8'), ('127.0.0.1', 12345) )
+data , addr = client_sock.recvfrom(4096)
+print("Server send : ", data.decode('utf-8'))
+
+client_sock.close()

UDP_server.py

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+import socket
+
+sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+
+sock.bind(('127.0.0.1', 12345))
+
+while True:
+    data,addr = sock.recvfrom(4096)
+    print(str(data))
+    message  = bytes('Hellow i am server here'.encode('utf-8'))
+    sock.sendto(message, addr )

tcpsockets.py

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+#!/usr/bin/env python3
+import socket
+import sys
+
+# basically 90% of internet stuff  is done using the AF_INET class 
+try:    
+    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+except:
+    print("Fail to create a socket ")
+    sys.exit()
+
+print("Socket created")
+
+target_host  = input("Enter the target host name to connect: ")
+target_port  = input("Enter the target port: ")
+
+try:    
+    sock.connect((target_host, int(target_port)))
+    print("Socket connected")
+    sock.shutdown(2)
+except socket.error as err:
+    print(f"Fail to connect to {target_host} at port no {target_port} due to {err}")
+