send data through tcp sockets python
import socket
TCP_IP = '127.0.0.1'
TCP_PORT = 5005
BUFFER_SIZE = 1024
MESSAGE = "Hello, World!"
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((TCP_IP, TCP_PORT))
s.send(MESSAGE)
data = s.recv(BUFFER_SIZE)
s.close()
print "received data:", datasocket python functions
#!/usr/bin/env python3
import socket
HOST = '127.0.0.1' # The server's hostname or IP address
PORT = 65432 # The port used by the server
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
s.connect((HOST, PORT))
s.sendall(b'Hello, world')
data = s.recv(1024)
print('Received', repr(data))socket programming in python
#!/usr/bin/env python3
import socket
HOST = '127.0.0.1' # Standard loopback interface address (localhost)
PORT = 65432 # Port to listen on (non-privileged ports are > 1023)
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
s.bind((HOST, PORT))
s.listen()
conn, addr = s.accept()
with conn:
print('Connected by', addr)
while True:
data = conn.recv(1024)
if not data:
break
conn.sendall(data)tcp client using sockets in python
from socket import *
import sys
import json
serverName = ""
serverPort = 6100
clientSocket = socket(AF_INET, SOCK_STREAM)
clientSocket.connect((serverName, serverPort))
sample_data = {
"Aparna" : 1,
"Pooja" : 2,
"Shreya" : 3,
"Tanishq" : 4
}
serialized_data = json.dumps(sample_data) #data serialized
# clientSocket.send(str.encode(sample_data))
clientSocket.send(str.encode(serialized_data))
response_data = clientSocket.recv(1024)
print("Response data from server : ", response_data.decode())
clientSocket.close()python can socket
import socket
import struct
import sys
# CAN frame packing/unpacking (see `struct can_frame` in <linux/can.h>)
can_frame_fmt = "=IB3x8s"
def build_can_frame(can_id, data):
can_dlc = len(data)
data = data.ljust(8, b'\x00')
return struct.pack(can_frame_fmt, can_id, can_dlc, data)
def dissect_can_frame(frame):
can_id, can_dlc, data = struct.unpack(can_frame_fmt, frame)
return (can_id, can_dlc, data[:can_dlc])
if len(sys.argv) != 2:
print('Provide CAN device name (can0, slcan0 etc.)')
sys.exit(0)
# create a raw socket and bind it to the given CAN interface
s = socket.socket(socket.AF_CAN, socket.SOCK_RAW, socket.CAN_RAW)
s.bind((sys.argv[1],))
while True:
cf, addr = s.recvfrom(16)
print('Received: can_id=%x, can_dlc=%x, data=%s' % dissect_can_frame(cf))
try:
s.send(cf)
except socket.error:
print('Error sending CAN frame')
try:
s.send(build_can_frame(0x01, b'\x01\x02\x03'))
except socket.error:
print('Error sending CAN frame')socket python functions
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
pass # Use the socket object without calling s.close().Copyright © 2021 Codeinu
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