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This is to become an open source clone of papercut style print management systems.

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This library has been made available under a compatible license: https://gist.github.com/mkropat/7559409

json.dumps crashing in mcrspl.py

I keep getting an error in mcrspl.py when a print job is sent to the test printer:

DEBUG:root:Determining user for address 127.0.0.1
DEBUG:root:User determined to be tim
DEBUG:root:New job from user tim on test
INFO:root:Spooling Job 226b754206 for tim on test
DEBUG:root:Alerting the central controller
DEBUG:root:Attempting to send job to central
ERROR:root:An error was encountered while attempting to alert the central spooler: 'utf8' codec can't decode byte 0xf6 in position 155: invalid start byte
Traceback (most recent call last):
  File "mcrspl.py", line 41, in alertSpooler
    sock.sendall(base64.b64encode(json.dumps(job)))
  File "/usr/lib/python2.7/json/__init__.py", line 243, in dumps
    return _default_encoder.encode(obj)
  File "/usr/lib/python2.7/json/encoder.py", line 207, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/lib/python2.7/json/encoder.py", line 270, in iterencode
    return _iterencode(o, 0)
UnicodeDecodeError: 'utf8' codec can't decode byte 0xf6 in position 155: invalid start byte
DEBUG:root:Successfully spooled 226b754206

Here's one of the smaller job objects that has caused this issue. Notice the \xf6 near the start of the '\x's that is triggering the json parsing error.

{'postscript': '\x1b%-12345X@PJL SET EDGEENHANCE=NORMAL\r\n@PJL SET XIGNOREFF=OFF\r\n@PJL SET PAPERTYPE = OFF\n@PJL DEFAULT SERVICEDATE=20140920\n@PJL ENTER LANGUAGE = QPDL\r\n\x00\x06\x00\x01\x00\t\xf6\x0c\xe4\x01\x00\x01\x00\x00\x03\x01\x06\x01\x00\x01\t\x1b%-12345X', 'destPrinter': 'test1', 'originUser': 'tim', 'name': '226b754206', 'originPrinter': 'test'}

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