| 1 | #!/usr/bin/env python
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| 2 |
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| 3 | import socket
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| 4 | import struct
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| 5 |
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| 6 | TCP_IP = '10.10.0.51'
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| 7 | TCP_PORT = 5123
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| 8 | BUFFER_SIZE = 1024
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| 9 | MESSAGE = struct.pack('!l',BUFFER_SIZE)
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| 10 |
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| 11 | s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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| 12 | s.connect((TCP_IP, TCP_PORT))
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| 13 | r = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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| 14 | r.connect((TCP_IP, TCP_PORT+2))
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| 15 | print "Requesting ",BUFFER_SIZE, " bytes"
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| 16 |
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| 17 | for i in range(1,15):
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| 18 | s.send(MESSAGE)
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| 19 | data = s.recv(BUFFER_SIZE)
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| 20 |
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| 21 | # First 4 bytes are checksum followed by the 4 byte sequence number
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| 22 | crc,sn = struct.unpack('!LL',data[:8])
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| 23 | print "Seq #:", sn, " with CRC [", hex(crc), "]"
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| 24 | r.send(data)
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| 25 | s.close()
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| 26 | r.close()
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