java.lang.IllegalArgumentException: Invalid character found in method name. HTTP method names must be tokens

问题

I am getting below stack trace when I am deploying my application in a multi-server Apache Tomcat 8 environment. I am getting this error frequently, and it seems it is blocking the tomcat thread:

INFO [http-nio-80-exec-4461] org.apache.coyote.http11.AbstractHttp11Processor.process Error parsing HTTP request header
 Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
 java.lang.IllegalArgumentException: Invalid character found in method name. HTTP method names must be tokens
 at org.apache.coyote.http11.AbstractNioInputBuffer.parseRequestLine(AbstractNioInputBuffer.java:233)
 at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1017)
 at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:684)
 at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1524)
 at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1480)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
 at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
 at java.lang.Thread.run(Unknown Source)

Can any one direct me how to troubleshoot or narrow down such an exeption? I am not getting any reference to any of my application source files. I tried to google around, and in of the links it said, you are trying to access http url through https, which seems unlikely. I am not getting this error, when the application runs on a single Tomcat 8 instance. I get this only in a multi-server environment.

I am also sharing the meta tags I have embedded on each page, if that helps to identify the cause.

<%
    response.setHeader("Cache-Control", "no-cache");
    response.setHeader("Cache-Control", "no-store");
    response.setDateHeader("Expires", 0);
    response.setHeader("Pragma", "no-cache");
%>


<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, minimum-scale=1.0, maximum-scale=1.0">
<meta name="viewport" content="width=device-width, initial-scale=1">

I am also using the following in a few pages, which basically is same as above:

<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta http-equiv="Expires" content="-1" />
<meta http-equiv="Cache-Control" content="private" />
<meta http-equiv="Cache-Control" content="no-store" />
<meta http-equiv="Pragma" content="no-cache" />

Even if anyone helps in giving a direction to my troubleshooting attempt, that will be useful, as currently I have no idea, where to look into.

Thanks in advance.

回答1:

This exception can occur when you try to execute HTTPS request from client on endpoint which isn't HTTPS enabled. Client will encrypt request data when server is expecting raw data.

回答2:

I got the same exception when I locally tested. The problem was a URL schema in my request.

Change https:// to http:// in your client url.

Probably it helps.

回答3:

You are calling local server with http://localhost:8080/foo/bar. Call it with https://localhost:8080/foo/bar. This solves the problem

回答4:

I received this exception unrelated to any SSL issues. In my case the Content-Length header value did not match the body length.

回答5:

Answering this old question (for others which may help)

Configuring your httpd conf correctly will make the problem solved. Install any httpd server, if you don't have one.

Listing my config here.

[smilyface@box002 ~]$ cat /etc/httpd/conf/httpd.conf | grep shirts | grep -v "#"

        ProxyPass /shirts-service http://local.box002.com:16743/shirts-service
        ProxyPassReverse /shirts-service http://local.box002.com:16743/shirts-service
        ProxyPass /shirts http://local.box002.com:16443/shirts
        ProxyPassReverse /shirts http://local.box002.com:16443/shirts
        ...
        ...
        ...

edit the file as above and then restart httpd as below

[smilyface@box002 ~]$ sudo service httpd restart

And then request with with https will work without exception.
Also request with http will forward to https ! No worries.

回答6:

I was getting the same exception, whenever a page was getting loaded,

NFO: Error parsing HTTP request header
 Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
java.lang.IllegalArgumentException: Invalid character found in method name. HTTP method names must be tokens
    at org.apache.coyote.http11.InternalInputBuffer.parseRequestLine(InternalInputBuffer.java:139)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1028)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)

I found that one of my page URL was https instead of http, when I changed the same, error was gone.

回答7:

This usually happens when you are using a URI scheme that is not supported by the server in which the app is deployed. So, you might either want to check what all schemes your server supports and modify your request URI accordingly, or, you might want to add the support for that scheme in your server. The scope of your application should help you decide on this.

回答8:

It happened to me when I had a same port used in ssh tunnel SOCKS to run Proxy in 8080 port and my server and my firefox browser proxy was set to that port and got this issue.

回答9:

I got this error resolved by doing 2 things in chrome browser:

Pressed Ctrl + Shift + Delete and cleared all browsing data from beginning.
Go to Chrome's : Settings ->Advanced Settings -> Open proxy settings -> Internet Properties then Go to the Content window and click on the Clear SSL State Button.

This site has this information and other options as well : https://www.thesslstore.com/blog/fix-err-ssl-protocol-error/

来源：https://stackoverflow.com/questions/42218237/java-lang-illegalargumentexception-invalid-character-found-in-method-name-http

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tomcat8

illegalargumentexception