| Guido van Rossum | 22825e8 | 1991-07-01 18:32:32 +0000 | [diff] [blame] | 1 | #! /usr/local/python |
| 2 | |
| 3 | # Python implementation of an 'echo' tcp server: echo all data it receives. |
| 4 | # |
| 5 | # This is the simplest possible server, sevicing a single request only. |
| 6 | |
| 7 | import sys |
| 8 | from socket import * |
| 9 | |
| 10 | # The standard echo port isn't very useful, it requires root permissions! |
| 11 | # ECHO_PORT = 7 |
| 12 | ECHO_PORT = 50000 + 7 |
| 13 | BUFSIZE = 1024 |
| 14 | |
| 15 | def main(): |
| 16 | if len(sys.argv) > 1: |
| 17 | port = int(eval(sys.argv[1])) |
| 18 | else: |
| 19 | port = ECHO_PORT |
| 20 | s = socket(AF_INET, SOCK_STREAM) |
| 21 | s.bind('', port) |
| 22 | s.listen(0) |
| 23 | conn, (host, remoteport) = s.accept() |
| 24 | print 'connected by', host, remoteport |
| 25 | while 1: |
| 26 | data = conn.recv(BUFSIZE) |
| 27 | if not data: |
| 28 | break |
| 29 | conn.send(data) |
| 30 | |
| 31 | main() |