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IProxyParser implementation for version one of the PROXY protocol.
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PROXY protocol version one header parser.
Version one of the PROXY protocol is a human readable format represented
by a single, newline delimited binary string that contains all of the
relevant source and destination data.
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Consume a chunk of data and attempt to parse it.
@param data: A bytestring.
@type data: L{bytes}
@return: A two-tuple containing, in order, a
L{_interfaces.IProxyInfo} and any bytes fed to the
parser that followed the end of the header. Both of these values
are None until a complete header is parsed.
@raises InvalidProxyHeader: If the bytes fed to the parser create an
invalid PROXY header.
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Parse a bytestring as a full PROXY protocol header line.
@param line: A bytestring that represents a valid HAProxy PROXY
protocol header line.
@type line: bytes
@return: A L{_interfaces.IProxyInfo} containing the parsed data.
@raises InvalidProxyHeader: If the bytestring does not represent a
valid PROXY header.
@raises InvalidNetworkProtocol: When no protocol can be parsed or is
not one of the allowed values.
@raises MissingAddressData: When the protocol is TCP* but the header
does not contain a complete set of addresses and ports.
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