Using VNC Viewer to connect failed

[pzh2386034]

If you'd like to put out an incentive for fixing this bug, you can do so at https://issuehunt.io/r/LibVNC/libvncserver

I try to make a connection to BMC embeded VNC server from my laptop VNC viewer, but it's failed.If I change to tight vnc client, it is ok. vnc viewer client display:Protocol error: unknown rect encoding 7

Logs/Backtraces Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 Got connection from client 172.16.91.16 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 0 other clients Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 Client Protocol Version 3.8 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 Protocol version sent 3.8, using 3.8 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 rfbProcessClientSecurityType: executing handler for type 1 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 rfbProcessClientSecurityType: returning securityResult for client rfb version >= 3.8 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 rfbProcessClientNormalMessage: ignoring unsupported encoding type Enc(0x00000018) Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 rfbProcessClientNormalMessage: ignoring unsupported encoding type Enc(0x00000016) Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 rfbProcessClientNormalMessage: ignoring unsupported encoding type Enc(0x0000000F) Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 rfbProcessClientNormalMessage: ignoring unsupported encoding type Enc(0xFFFFFEC6) Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 Enabling full-color cursor updates for client 172.16.91.16 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 Enabling NewFBSize protocol extension for client 172.16.91.16 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 Using ZRLE encoding for client 172.16.91.16 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 Pixel format for client 172.16.91.16: Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 8 bpp, depth 6 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 true colour: max r 3 g 3 b 3, shift r 4 g 2 b 0 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 rfbProcessClientNormalMessage: ignoring unsupported encoding type Enc(0x00000018) Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 rfbProcessClientNormalMessage: ignoring unsupported encoding type Enc(0x00000016) Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 rfbProcessClientNormalMessage: ignoring unsupported encoding type Enc(0x0000000F) Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 rfbProcessClientNormalMessage: ignoring unsupported encoding type Enc(0xFFFFFEC6) Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 Enabling full-color cursor updates for client 172.16.91.16 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 Enabling NewFBSize protocol extension for client 172.16.91.16 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 Switching from ZRLE to raw Encoding for client 172.16.91.16 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 rfbProcessClientNormalMessage: ignoring unsupported encoding type Enc(0x00000018) Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 rfbProcessClientNormalMessage: ignoring unsupported encoding type Enc(0x00000016) Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 rfbProcessClientNormalMessage: ignoring unsupported encoding type Enc(0x0000000F) Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 rfbProcessClientNormalMessage: ignoring unsupported encoding type Enc(0xFFFFFEC6) Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 Enabling full-color cursor updates for client 172.16.91.16 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 Enabling NewFBSize protocol extension for client 172.16.91.16 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 Switching from raw to ZRLE Encoding for client 172.16.91.16 Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 Pixel format for client 172.16.91.16: Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 32 bpp, depth 24, little endian Feb 11 11:10:19 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:19 true colour: max r 255 g 255 b 255, shift r 16 g 8 b 0 Feb 11 11:10:20 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:20 rfbProcessClientNormalMessage: read: Connection reset by peer Feb 11 11:10:20 0000000000000001 obmc-ikvm[30775]: 11/02/2022 11:10:20 Client 172.16.91.16 gone

Your environment (please complete the following information):

• OS and version:windows 10; vncviewer 6.22.315;

Additional context

[bk138]

You should file a bug with the client as it's failing.

[bk138]

Tentatively closing until more info is provided. Feel free to post here.