On 05/12/2023 09:45, Burle, Saicharan wrote:
Hi All,

I am trying to build a tomcat instance in a net new server and getting the 
below error while starting. Although instance has come up but I am unable to 
debug the below error. Can someone please assist in this regard?

[https-jsse-nio-11511-exec-4] org.apache.coyote.http11.Http11Processor.service 
Error parsing HTTP request header
Note: further occurrences of HTTP request parsing errors will be logged at 
DEBUG level.
         java.lang.IllegalArgumentException: Invalid character found in method 
name 
[000x020x010x01`+0x020x010x030x040x08cn=Admin0x800x1c0x7d1a9b5edae2b4de4ff533738b...].
 HTTP method names must be tokens

The client isn't sending a valid HTTP request. What it is sending isn't even close.

The presence of "cn=Admin" in what is sent makes me wonder if the client is trying to send HTTPS to an HTTP connection.

Mark

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