Certain ssh sessions seem to crash my instance of Gitblit

[Evan Van Orden]

I have been digging into this and at a loss where to go next. I am running v1.9.3.
for the most part everything works great. My repository is there and I can pull from it and update great.
We used to run in Linux on SLES11 and now our client is setting up new servers for linux on SLES15. And taking the same stable copy I used before on the new server, it runs for maybe a day or two and then crashes. I'll share the logs I have.
I should add that I an running gitblit as a nohup started up by a custom script that we have used for years with no issues.
Google seems to lend that there are https requests or something coming in, but I don't know what to do about it. Can I change ports? There are also suggestions that an upgraded Jetty version could provide more logging but not sure I can just use later jetty jar, lol. Any thoughts or help would be appreciated.

2024-02-10 08:41:33 [INFO ] creating ssh session from /0:0:0:0:0:0:0:1:44621
2024-02-10 08:41:33 [WARN ] exceptionCaught(SshServerSession[null@/0:0:0:0:0:0:0:1:44621])[state=Opened] IllegalStateException: Incorrect identification (null characters not allowed) - at line 1 character #7 after '������'
2024-02-10 08:41:33 [INFO ] closed ssh session from /0:0:0:0:0:0:0:1:44621
2024-02-10 08:41:33 [INFO ] creating ssh session from /0:0:0:0:0:0:0:1:34413
2024-02-10 08:41:33 [WARN ] exceptionCaught(SshServerSession[null@/0:0:0:0:0:0:0:1:34413])[state=Opened] IllegalStateException: Incorrect identification (null characters not allowed) - at line 1 character #7 after '������'
2024-02-10 08:41:33 [INFO ] closed ssh session from /0:0:0:0:0:0:0:1:34413
2024-02-10 08:41:33 [INFO ] creating ssh session from /0:0:0:0:0:0:0:1:45033
2024-02-10 08:41:33 [WARN ] exceptionCaught(SshServerSession[null@/0:0:0:0:0:0:0:1:45033])[state=Opened] IllegalStateException: Incorrect identification (null characters not allowed) - at line 1 character #7 after '������'
2024-02-10 08:41:33 [INFO ] creating ssh session from /0:0:0:0:0:0:0:1:39851
2024-02-10 08:41:33 [INFO ] closed ssh session from /0:0:0:0:0:0:0:1:45033
2024-02-10 08:41:33 [WARN ] exceptionCaught(SshServerSession[null@/0:0:0:0:0:0:0:1:39851])[state=Opened] IllegalStateException: Incorrect identification (null characters not allowed) - at line 1 character #3 after '��'
2024-02-10 08:41:33 [INFO ] closed ssh session from /0:0:0:0:0:0:0:1:39851
2024-02-10 08:41:33 [INFO ] creating ssh session from /0:0:0:0:0:0:0:1:42347
2024-02-10 08:41:33 [WARN ] exceptionCaught(SshServerSession[null@/0:0:0:0:0:0:0:1:42347])[state=Opened] IllegalStateException: Incorrect identification (null characters not allowed) - at line 1 character #4 after '�>�'
2024-02-10 08:41:33 [INFO ] closed ssh session from /0:0:0:0:0:0:0:1:42347
2024-02-10 08:41:33 [WARN ] Illegal character 0x16 in state=START for buffer HeapByteBuffer@2f393bca[p=1,l=475,c=8192,r=474]={\x16<<<\x03\x03\x01\xD6\x01\x00\x01\xD2\x03\x030\xB1\xCa\xC5W\x1ff...\x03\x08\x04\x04\x01\x05\x03\x05\x01\x08\x05\x08\x06\x06\x01>>>.git\r\nAccept-Enco...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}
2024-02-10 08:41:33 [WARN ] badMessage: 400 Illegal character 0x16 for HttpChannelOverHttp@6926155e{r=0,c=false,a=IDLE,uri=}
2024-02-10 08:41:33 [WARN ] Illegal character 0x16 in state=START for buffer HeapByteBuffer@2f393bca[p=1,l=475,c=8192,r=474]={\x16<<<\x03\x02\x01\xD6\x01\x00\x01\xD2\x03\x02\xBa\x02\xA5.^m?...\x03\x08\x04\x04\x01\x05\x03\x05\x01\x08\x05\x08\x06\x06\x01>>>.git\r\nAccept-Enco...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}
2024-02-10 08:41:33 [WARN ] badMessage: 400 Illegal character 0x16 for HttpChannelOverHttp@3e355672{r=0,c=false,a=IDLE,uri=}
2024-02-10 08:41:33 [WARN ] Illegal character 0x16 in state=START for buffer HeapByteBuffer@2f393bca[p=1,l=475,c=8192,r=474]={\x16<<<\x03\x01\x01\xD6\x01\x00\x01\xD2\x03\x01 b\x11\xBc>=\xCa...\x03\x08\x04\x04\x01\x05\x03\x05\x01\x08\x05\x08\x06\x06\x01>>>.git\r\nAccept-Enco...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}
2024-02-10 08:41:33 [WARN ] badMessage: 400 Illegal character 0x16 for HttpChannelOverHttp@52bc611b{r=0,c=false,a=IDLE,uri=}
2024-02-10 08:41:33 [WARN ] Illegal character 0x16 in state=START for buffer HeapByteBuffer@2f393bca[p=1,l=429,c=8192,r=428]={\x16<<<\x03\x00\x01\xA8\x01\x00\x01\xA4\x03\x000\xEc^\xEe\x1f\xFb\xE2...\xCc\xA9\xCc\xAa\xCc\xAb\xCc\xAc\xCc\xAd\xCc\xAe\x02\x00\x01>>>\x00,\x00\n\x00\n\x00\x08\x00\x17\x00\x19\x00\x18\x00\x16\x00...\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00}
2024-02-10 08:41:33 [WARN ] badMessage: 400 Illegal character 0x16 for HttpChannelOverHttp@343df7ed{r=0,c=false,a=IDLE,uri=}
2024-02-10 08:41:33 [WARN ] badMessage: 400 for HttpChannelOverHttp@6d6888d1{r=0,c=false,a=IDLE,uri=}
2024-02-10 08:41:33 [INFO ] *****************************************************************
2024-02-10 08:41:33 [INFO ] Stopping Gitblit
2024-02-10 08:41:33 [INFO ] *****************************************************************
2024-02-10 08:41:33 [INFO ] Stopped ServerConnector@7ac2e39b{SSL-HTTP/1.1}{0.0.0.0:8442}
2024-02-10 08:41:33 [INFO ] Stopped ServerConnector@78365cfa{HTTP/1.1}{0.0.0.0:8070}
2024-02-10 08:41:34 [INFO ] Gitblit context destroyed by servlet container.
2024-02-10 08:41:34 [INFO ] Git Daemon stopping...
2024-02-10 08:41:34 [INFO ] Git Daemon stopped.
2024-02-10 08:41:34 [INFO ] SSH Daemon stopping...
2024-02-10 08:41:34 [INFO ] Stopped o.e.j.w.WebAppContext@293a5f75{/,file:/u/ant/schfrwms/ACXGITBLIT_2.8test/data/temp/webapp/,UNAVAILABLE}{file:/u/ant/schfrwms/ACXGITBLIT_2.8test/gitblit.jar}

I am just trying to see if 
Original discussion on GitHub:
https://github.com/gitblit-org/gitblit/discussions/1470