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TCP

TCP is a streaming protocol and some mechanism is needed to frame messages on the wire. A number of decoders are available, the default being 'CRLF' which is compatible with Telnet.

Messages produced by the TCP source application have a byte[] payload.

Available Decoders

Text Data
CRLF (default)

text terminated by carriage return (0x0d) followed by line feed (0x0a)

LF

text terminated by line feed (0x0a)

NULL

text terminated by a null byte (0x00)

STXETX

text preceded by an STX (0x02) and terminated by an ETX (0x03)

Text and Binary Data
RAW

no structure - the client indicates a complete message by closing the socket

L1

data preceded by a one byte (unsigned) length field (supports up to 255 bytes)

L2

data preceded by a two byte (unsigned) length field (up to 216-1 bytes)

L4

data preceded by a four byte (signed) length field (up to 231-1 bytes)