Can't Connect To Server

[Matt Elphew]

Hello guys, 

I just wrote a message but it got deleted for some reason (maybe because I attached a link)? So my question was, I've been trying to get the noVNC web client working for a few days now. I have a problem that I don't seem able to solve though. So my problem is, everytime when I try to connect to the VNC server with the client, the connection establishment gets stuck at the point "Authenticating using scheme: 1". The debug output looks like the following: 

connecting to ws://172.30.1.33:5900/

16:39:42.666 rfb.js:423 << RFB.connect

16:39:42.696 websock.js:215 >> WebSock.onopen

16:39:42.696 websock.js:217 Server choose sub-protocol: binary

16:39:42.696 rfb.js:204 Starting VNC handshake

16:39:42.696 websock.js:221 << WebSock.onopen

16:39:42.696 rfb.js:818 Server ProtocolVersion: 003.008

16:39:42.697 rfb.js:858 Sent ProtocolVersion: 003.008

16:39:42.698 rfb.js:885 Server security types: 1

16:39:42.698 rfb.js:909 Authenticating using scheme: 1

after that it just hangs for a few seconds and then shows an error message. The VNC server I'm using is "x11vnc/bionic,now 0.9.13-3 amd64" on a ubuntu machine. The connection works when I'm using a "normal" vnc client. I'd greatly appreciate if anyone could help me. 

Thanks a lot and have a great day,

Matt

[Matt Elphew]

I got some further debug information, this is what the server output is when the connection happens

24/03/2021 16:59:46 Got connection from client 192.168.206.117

24/03/2021 16:59:46   other clients:

24/03/2021 16:59:46 Got 'ws' WebSockets handshake

24/03/2021 16:59:46 Got protocol: binary

24/03/2021 16:59:46   - webSocketsHandshake: using binary/raw encoding

24/03/2021 16:59:46   - WebSockets client version hybi-13

24/03/2021 16:59:46 cleaned up wsctx

24/03/2021 16:59:46 Disabled X server key autorepeat.

24/03/2021 16:59:46   to force back on run: 'xset r on' (3 times)

24/03/2021 16:59:46 incr accepted_client=1 for 192.168.206.117:57449  sock=10

24/03/2021 16:59:46 webSocketsDecodeHybi_enter: len=12; CTX: readlen=0 readPos=0x55dd42f86900 writeTo=(nil) state=0 toRead=0 remaining=0  nReadRaw=0 carrylen=0 carryBuf=0x55dd42f9a1b8

24/03/2021 16:59:46 header_read to 0x55dd42f86900 with len=14

24/03/2021 16:59:46 read 14 bytes from socket

24/03/2021 16:59:46 first header bytes received; opcode=2 lenbyte=12

24/03/2021 16:59:46 header complete: state=0 flen=18 writeTo=0x55dd42f8690e

24/03/2021 16:59:46 calling read with buf=0x55dd42f8690e and len=4 (decodebuf=0x55dd42f86900 headerLen=6)

24/03/2021 16:59:46 read 4 bytes from socket; nRead=18

24/03/2021 16:59:46 toDecode=12 from n=4 carrylen=0 headerLen=6

24/03/2021 16:59:46 mask decoding; i=3 toDecode=12

24/03/2021 16:59:46 carrying over 0 bytes from 0x55dd42f8691e to 0x55dd42f9a1b8

24/03/2021 16:59:46 copy to 12 bytes to dst buffer; readPos=0x55dd42f86906, readLen=12

24/03/2021 16:59:46 after copy: readPos=(nil), readLen=0

24/03/2021 16:59:46 frame received successfully, cleaning up: read=0 hlen=6 plen=12

24/03/2021 16:59:46 cleaned up wsctx

24/03/2021 16:59:46 webSocketsDecodeHybi_exit: len=12; CTX: readlen=0 readPos=0x55dd42f86900 writePos=(nil) state=0 toRead=0 remaining=0 nRead=0 carrylen=0 carryBuf=0x55dd42f9a1b8 result=12

24/03/2021 16:59:46 Client Protocol Version 3.8

24/03/2021 16:59:46 Protocol version sent 3.8, using 3.8

24/03/2021 16:59:46 webSocketsDecodeHybi_enter: len=1; CTX: readlen=0 readPos=0x55dd42f86900 writeTo=(nil) state=0 toRead=0 remaining=0  nReadRaw=0 carrylen=0 carryBuf=0x55dd42f9a1b8

24/03/2021 16:59:46 header_read to 0x55dd42f86900 with len=14

24/03/2021 16:59:46 read 7 bytes from socket

24/03/2021 16:59:46 first header bytes received; opcode=2 lenbyte=1

24/03/2021 16:59:46 header complete: state=0 flen=7 writeTo=0x55dd42f86907

24/03/2021 16:59:46 calling read with buf=0x55dd42f86907 and len=0 (decodebuf=0x55dd42f86900 headerLen=6)

24/03/2021 16:59:46 toDecode=1 from n=0 carrylen=0 headerLen=6

24/03/2021 16:59:46 mask decoding; i=0 toDecode=1

24/03/2021 16:59:46 carrying over 1 bytes from 0x55dd42f86907 to 0x55dd42f9a1b8

24/03/2021 16:59:46 cleaned up wsctx

24/03/2021 16:59:46 webSocketsDecodeHybi_exit: len=1; CTX: readlen=0 readPos=0x55dd42f86900 writePos=(nil) state=0 toRead=0 remaining=0 nRead=0 carrylen=0 carryBuf=0x55dd42f9a1b8 result=-1

24/03/2021 17:00:06 ReadExact: select timeout

24/03/2021 17:00:06 rfbProcessClientSecurityType: read: Connection timed out

24/03/2021 17:00:06 client_count: 0

24/03/2021 17:00:06 Restored X server key autorepeat to: 1

24/03/2021 17:00:06 connect_once: invalid password or early disconnect.  1

24/03/2021 17:00:06 connect_once: waiting for next connection.

24/03/2021 17:00:06 Client 192.168.206.117 gone

24/03/2021 17:00:06 Statistics             events    Transmit/ RawEquiv ( saved)

24/03/2021 17:00:06  TOTALS              :      0 |         0/        0 (  0.0%)

24/03/2021 17:00:06 Statistics             events    Received/ RawEquiv ( saved)

24/03/2021 17:00:06  TOTALS              :      0 |         0/        0 (  0.0%)

I don't have a password configured so an invalid password can't be the reason