1.3.3.8.5. blockdiag Directive - Packet Diagram¶

Requirements:
- Install: sphinxcontrib-nwdiag via Python pip (Included in SPHINX_ENV_INSTALL, Sphinx Environment)
- Add sphinxcontrib.packetdiag to Sphinx extentions in conf.py (Included in SPHINX_ENV_INSTALL, Sphinx Environment via defaults.py)

This is your .rst file code example to create a Packet Diagram http://blockdiag.com/en/nwdiag/index.html:

Table 1.8 *packetdiag* Options¶
Option	Values
:align:	left, center or right
:scale:	0-100 percentage value
:caption:	text to label Figure
:name:	text to create hyperlink for sphinx (no spaces)

.. packetdiag::
    :align: center
    :caption: Example - Packet Diagram
    :name: triton_coe_test_packetdiag
    :scale: 100

    packetdiag {
        colwidth = 32
        node_height = 72

        0-15: Source Port
        16-31: Destination Port
        32-63: Sequence Number
        64-95: Acknowledgment Number
        96-99: Data Offset
        100-105: Reserved
        106: URG [rotate = 270]
        107: ACK [rotate = 270]
        108: PSH [rotate = 270]
        109: RST [rotate = 270]
        110: SYN [rotate = 270]
        111: FIN [rotate = 270]
        112-127: Window
        128-143: Checksum
        144-159: Urgent Pointer
        160-191: (Options and Padding)
        192-223: data [colheight = 3]
    }

The previous code-block will generate this Packet Diagram: