python tcp server

1# Basic example where server accepts messages from client.
2
3# importing socket library
4import socket
5
6# socket.AF_INET means we're using IPv4 ( IP version 4 )
7# socket.SOCK_STREAM means we're using TCP protocol for data transfer
8socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
9
10print("Choose mode. s - server, c - client")
11mode = input("> ")
12
13if mode == "s":
14  ip = input("Your computer's ip address: ")
15  port = 80
16  
17  # Binding socket to specified ip address and port
18  socket.bind((ip, port))
19  
20  # This is max ammount of clients we will accept
21  socket.listen(1)
22  
23  # Accepting connection from client
24  sock, addr = socket.accept()
25  print("Client connected from", addr)
26  
27  # Receiving data from client
28  while True:
29    data = sock.recv(16384) # Raw data from client
30    text = data.decode('utf-8') # Decoding it
31    
32    print("Message from client:", text)
33    
34elif mode == "c":
35  ip = input("Server ip address: ")
36  
37  # Connecting to server
38  socket.connect((ip, 80))
39  
40  # Sending data
41  while True:
42    socket.send(input("Message: ").encode('utf-8'))

1####### TCP Server #######
2
3from socket import AF_INET,SOCK_STREAM,socket
4
5# AF_INET => TCP
6# SOCK_STREAM => IPv4
7
8sobj = socket(AF_INET,SOCK_STREAM)
9sobj.bind(('127.0.0.1',12345))
10sobj.listen(1)
11
12client , addr = sobj.accept()
13print("the ip is connected to server ",addr)
14
15while(True):
16    
17    message = input()
18    if(message == "exit"):
19        client.close()
20        break
21    else:
22        client.send(message.encode())
23
24        
25####### TCP Client #######
26
27from socket import AF_INET,SOCK_STREAM,socket
28
29sobj = socket(AF_INET,SOCK_STREAM)
30sobj.connect(('127.0.0.1',12345))
31while True:
32    message = sobj.recv(2048)
33    if(message == "exit"):
34        sobj.close()
35        break
36    elif(message.decode() == ''):
37        pass
38    else:
39        print(message.decode())
40    
41

1#!/usr/bin/env python3
2
3import socket
4
5HOST = '127.0.0.1'  # The server's hostname or IP address
6PORT = 65432        # The port used by the server
7
8with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
9    s.connect((HOST, PORT))
10    s.sendall(b'Hello, world')
11    data = s.recv(1024)
12
13print('Received', repr(data))
14

1import socket               # Import socket module
2
3s = socket.socket()         # Create a socket object
4host = socket.gethostname() # Get local machine name
5port = 12345                # Reserve a port for your service.
6s.bind((host, port))        # Bind to the port
7
8s.listen(5)                 # Now wait for client connection.
9while True:
10   c, addr = s.accept()     # Establish connection with client.
11   print 'Got connection from', addr
12   c.send('Thank you for connecting')
13   c.close()                # Close the connection

1from socket import *
2import sys
3import json
4
5
6serverName = ""
7serverPort = 6100
8
9
10clientSocket = socket(AF_INET, SOCK_STREAM)
11clientSocket.connect((serverName, serverPort))
12
13sample_data = {
14	"Aparna" : 1,
15	"Pooja" : 2,
16	"Shreya" : 3,
17	"Tanishq" : 4
18}
19
20serialized_data = json.dumps(sample_data) #data serialized
21
22# clientSocket.send(str.encode(sample_data))
23clientSocket.send(str.encode(serialized_data))
24
25response_data = clientSocket.recv(1024)
26print("Response data from server : ", response_data.decode())
27
28clientSocket.close()

1conn, addr = s.accept()
2with conn:
3    print('Connected by', addr)
4    while True:
5        data = conn.recv(1024)
6        if not data:
7            break
8        conn.sendall(data)
9