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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 48830] New: IIS shutdown blocked in endpoint service when server doesn't respond
Date Mon, 01 Mar 2010 08:23:33 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=48830

           Summary: IIS shutdown blocked in endpoint service when server
                    doesn't respond
           Product: Tomcat Connectors
           Version: 1.2.27
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P2
         Component: isapi
        AssignedTo: dev@tomcat.apache.org
        ReportedBy: timw@apache.org


When the ISAPI redirector is used to access a back-end server that doesn't
respond to a request for a long time, IIS shutdown will be blocked.

The specific case I've observed this is an Eclipse RAP application, with UI
callbacks activated, which triggers a polling HTTP request to be made to the
server - this request only returns when there are UI updates to display

Debugging yields the stack trace below (note the line numbers will be a bit off
from trunk at the moment):

     isapi_redirect.dll!jk_tcp_socket_recvfull(unsigned int sd=1188, unsigned
char * b=0x0124e18c, int len=4, jk_logger * l=0x01205478)  Line 896 + 0x1a
bytes    C
     isapi_redirect.dll!ajp_connection_tcp_get_message(ajp_endpoint *
ae=0x012a41a8, jk_msg_buf_t * msg=0x012a41e0, jk_logger * l=0x01205478)  Line
1216 + 0x19 bytes    C
     isapi_redirect.dll!ajp_get_reply(jk_endpoint * e=0x012a61d8, jk_ws_service
* s=0x0124f288, jk_logger * l=0x01205478, ajp_endpoint * p=0x012a41a8,
ajp_operation * op=0x0124e21c)  Line 2053 + 0x14 bytes    C
>    isapi_redirect.dll!ajp_service(jk_endpoint * e=0x012a61d8, jk_ws_service * s=0x0124f288,
jk_logger * l=0x01205478, int * is_error=0x0124e254)  Line 2449 + 0x19 bytes    C
     isapi_redirect.dll!HttpExtensionProc(_EXTENSION_CONTROL_BLOCK *
lpEcb=0x00aced68)  Line 2184 + 0x27 bytes    C
(This is the call to e->service after obtaining a worker).

I've replicated this multiple times on shutdown with 1.2.30 and 1.2.27.

This is observed even after terminating the browser.

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