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+--- Thread: How to send/receive data over TCP (/thread-15008.html)
How to send/receive data over TCP - Rehan11 - Dec-29-2018
I have tow system one is system A and anothr is system B
System A - Server (pi)
System B - Client (printer)
I want to send a request to the printer
if request accepted, get the data from the printer
I found the two program but I don't understand which one used for my purpose
Client
Here's simple code to send and receive data by TCP in Python
#!/usr/bin/env 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:", dataServer
Here's simple code to serve TCP in Python:
#!/usr/bin/env python
import socket
TCP_IP = '127.0.0.1'
TCP_PORT = 5005
BUFFER_SIZE = 20 # Normally 1024, but we want fast response
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((TCP_IP, TCP_PORT))
s.listen(1)
conn, addr = s.accept()
print 'Connection address:', addr
while 1:
data = conn.recv(BUFFER_SIZE)
if not data: break
print "received data:", data
conn.send(data) # echo
conn.close()
RE: How to send/receive data over TCP - cetpaseo336 - Feb-01-2019
hello
write a socket programming with python to send and recive a file over tcp
Here is a part to send a part of data based on the size of the buffer.
msg[i] = file[i].read()
file[i].close()
while 1:
tdata[i], msg[i] = msg[i][:buf], msg[i][buf:]
c.send(tdata[i])
if len(msg[i]) < buf:
break