utf7 0.9.2

Encoder/decoder of an UTF-7 encoded unsigned integer.

>>> utf7.pack_bytes(65535)
b'\xff\xff\x03'
>>> utf7.unpack_bytes(b'\xff\xff\x03')
65535

UTF-7 uint is used for BinaryWriter.Write(String) in Microsoft .NET Framework. Here’s an example of ping-pong between Python server and C# client:

while not socket.closed:
    # recv ping
    ping_size = utf7.unpack_socket(socket)
    ping_data = socket.recv(ping_size)
    assert ping_data == b'ping'
    # send pong
    pong_data = b'pong'
    pong_size = len(pong_data)
    utf7.pack_socket(pong_size, socket)
    socket.send(pong_data)