If you want to compile mod_dumpio on Windows with Visual C++ 2005 Express, there are various docs out there to get you almost all the way: http://httpd.apache.org/docs/2.0/platform/win_compiling.html http://msdn.microsoft.com/vstudio/express/visualc/usingpsdk/ http://www.apachelounge.com/forum/viewtopic.php?t=778 http://www.apachelounge.com/forum/viewtopic.php?p=2498 However, there was a final hurdle when I did it. I had to right-click mod_dumpio project->Properties->Configuration Properties->Linker->Command Line->Additional options, enter "..\..\release\libhttpd.lib" "..\..\srclib\apr-util\release\libaprutil.lib" "..\..\srclib\apr\release\libapr.lib", click OK, right-click mod_dumpio project->Rebuild. After all that work, I was disappointed with the output of mod_dumpio. Below is a sample, so you don't have to compile it without knowing if it will help you. If anyone wants a binary for 2.0.55, I would be happy to send mine. It might work with other 2.0.x versions. jason [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 16 bytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): GET / HTTP/1.1\r\n [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 23 bytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Host: localhost:58080\r\n [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 104 bytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3\r\n [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 109 bytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5\r\n [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 33 bytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Accept-Language: en-us,en;q=0.5\r\n [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 31 bytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Accept-Encoding: gzip,deflate\r\n [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 48 bytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 17 bytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Keep-Alive: 300\r\n [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 24 bytes [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Connection: keep-alive\r\n [Wed May 02 23:34:40 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 2 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): \r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(129): mod_dumpio: dumpio_out [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_out (data-HEAP): 407 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_out (data-HEAP): HTTP/1.1 200 OK\r\nDate: Thu, 03 May 2007 05:34:40 GMT\r\nServer: Apache\r\nContent-Location: index.html.en\r\nVary: negotiate,accept-language,accept-charset\r\nTCN: choice\r\nLast-Modified: Sun, 21 Nov 2004 13:35:22 GMT\r\nETag: "21df7-5d6-cfc61a80;21dd7-9dc-cfc61a80"\r\nAccept-Ranges: bytes\r\nContent-Length: 1494\r\nKeep-Alive: timeout=15, max=100\r\nConnection: Keep-Alive\r\nContent-Type: text/html\r\nContent-Language: en\r\n\r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(129): mod_dumpio: dumpio_out [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_out (data-FILE): 1494 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_out (data-MMAP): <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"\r\n "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">\r\n<html xmlns="http://www.w3.org/1999/xhtml">\r\n<head>\r\n<title>Test Page for Apache Installation</title>\r\n</head>\r\n<!-- Background white, links blue (unvisited), navy (visited), red\r\n(active) -->\r\n<body bgcolor="#FFFFFF" text="#000000" link="#0000FF"\r\nvlink="#000080" alink="#FF0000">\r\n<p>If you can see this, it means that the installation of the <a\r\nhref="http://www.apache.org/foundation/preFAQ.html">Apache web\r\nserver</a> software on this system was successful. You may now add\r\ncontent to this directory and replace this page.</p>\r\n\r\n<hr width="50%" size="8" />\r\n<h2 align="center">Seeing this instead of the website you\r\nexpected?</h2>\r\n\r\n<p>This page is here because the site administrator has changed the\r\nconfiguration of thi s web server. Please <strong>contact the person\r\nresponsible for maintaining this server with questions.</strong>\r\nThe Apache Software Foundation, which wrote the web server software\r\nthis site administrator is using, has nothing to do with\r\nmaintaining this site and cannot help resolve configuration\r\nissues.</p>\r\n\r\n<hr width="50%" size="8" />\r\n<p>The Apache <a href="manual/">documentation</a> has been included\r\nwith this distribution.</p>\r\n\r\n<p>You are free to use the image below on an Apache-powered web\r\nserver. Thanks for using Apache!</p>\r\n\r\n<div align="center"><img src="apache_pb.gif" alt="" /></div>\r\n</body>\r\n</html>\r\n\r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_out (metadata-EOS): 0 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [eatcrlf-nonblocking] 0 readbytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(117): mod_dumpio: dumpio_in - 730035 [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 29 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): GET /apache_pb.gif HTTP/1.1\r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 23 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Host: localhost:58080\r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 104 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3\r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 29 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Accept: image/png,*/*;q=0.5\r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 33 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Accept-Language: en-us,en;q=0.5\r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 31 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Accept-Encoding: gzip,deflate\r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 48 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 17 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Keep-Alive: 300\r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 24 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Connection: keep-alive\r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 34 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): Referer: http://localhost:58080/\r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_in (data-HEAP): 2 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_in (data-HEAP): \r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(129): mod_dumpio: dumpio_out [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_out (data-HEAP): 271 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_out (data-HEAP): HTTP/1.1 200 OK\r\nDate: Thu, 03 May 2007 05:34:41 GMT\r\nServer: Apache\r\nLast-Modified: Sun, 21 Nov 2004 13:35:22 GMT\r\nETag: "21e03-916-cfc61a80"\r\nAccept-Ranges: bytes\r\nContent-Length: 2326\r\nKeep-Alive: timeout=15, max=99\r\nConnection: Keep-Alive\r\nContent-Type: image/gif\r\n\r\n [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(129): mod_dumpio: dumpio_out [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_out (data-FILE): 2326 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(67): mod_dumpio: dumpio_out (data-MMAP): GIF89a\x03\x01 [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(51): mod_dumpio: dumpio_out (metadata-EOS): 0 bytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [eatcrlf-nonblocking] 0 readbytes [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(117): mod_dumpio: dumpio_in - 730035 [Wed May 02 23:34:41 2007] [debug] mod_dumpio.c(103): mod_dumpio: dumpio_in [getline-blocking] 0 readbytes --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. 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