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rfb_notes
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rfb_notes
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5.1.1 ProtocolVersion: 12, 12 bytes
- Sent by server, max supported
12 ascii - "RFB 003.008\n"
- Response by client, version to use
12 ascii - "RFB 003.003\n"
5.1.2 Authentication: >=4, [16, 4] bytes
- Sent by server
CARD32 - authentication-scheme
0 - connection failed
CARD32 - length
length - reason
1 - no authentication
2 - VNC authentication
16 CARD8 - challenge (random bytes)
- Response by client (if VNC authentication)
16 CARD8 - client encrypts the challenge with DES, using user
password as key, sends resulting 16 byte response
- Response by server (if VNC authentication)
CARD32 - 0 - OK
1 - failed
2 - too-many
5.1.3 ClientInitialisation: 1 byte
- Sent by client
CARD8 - shared-flag, 0 exclusive, non-zero shared
5.1.4 ServerInitialisation: >=24 bytes
- Sent by server
CARD16 - framebuffer-width
CARD16 - framebuffer-height
16 byte PIXEL_FORMAT - server-pixel-format
CARD8 - bits-per-pixel
CARD8 - depth
CARD8 - big-endian-flag, non-zero is big endian
CARD8 - true-color-flag, non-zero then next 6 apply
CARD16 - red-max
CARD16 - green-max
CARD16 - blue-max
CARD8 - red-shift
CARD8 - green-shift
CARD8 - blue-shift
3 bytes - padding
CARD32 - name-length
CARD8[length] - name-string
Client to Server Messages:
5.2.1 SetPixelFormat: 20 bytes
CARD8: 0 - message-type
...
5.2.2 FixColourMapEntries: >=6 bytes
CARD8: 1 - message-type
...
5.2.3 SetEncodings: >=8 bytes
CARD8: 2 - message-type
CARD8 - padding
CARD16 - numer-of-encodings
CARD32 - encoding-type in preference order
0 - raw
1 - copy-rectangle
2 - RRE
4 - CoRRE
5 - hextile
5.2.4 FramebufferUpdateRequest (10 bytes)
CARD8: 3 - message-type
CARD8 - incremental (0 for full-update, non-zero for incremental)
CARD16 - x-position
CARD16 - y-position
CARD16 - width
CARD16 - height
5.2.5 KeyEvent: 8 bytes
CARD8: 4 - message-type
CARD8 - down-flag
2 bytes - padding
CARD32 - key (X-Windows keysym values)
5.2.6 PointerEvent: 6 bytes
CARD8: 5 - message-type
CARD8 - button-mask
CARD16 - x-position
CARD16 - y-position
5.2.7 ClientCutText: >=9 bytes
CARD8: 6 - message-type
...
Server to Client Messages:
5.3.1 FramebufferUpdate
CARD8: 0 - message-type
1 byte - padding
CARD16 - number-of-rectangles
CARD16 - x-position
CARD16 - y-position
CARD16 - width
CARD16 - height
CARD16 - encoding-type:
0 - raw
1 - copy rectangle
2 - RRE
4 - CoRRE
5 - hextile
raw:
- width x height pixel values
copy rectangle:
CARD16 - src-x-position
CARD16 - src-y-position
RRE:
CARD32 - N number-of-subrectangles
Nxd bytes - background-pixel-value (d bits-per-pixel)
...
5.3.2 SetColourMapEntries (no support)
CARD8: 1 - message-type
...
5.3.3 Bell
CARD8: 2 - message-type
5.3.4 ServerCutText
CARD8: 3 - message-type