Ok.. I'm made some progress.. not enough, but some. I build w/o ZLIB and it didn't help much.. I tried both IE and Mozilla (1.6).. still no go w/ HTTPS..
I grabbed an old copy of 2.2.99 from another similar server.. compiled it up and just like magic my graphs came back.. so.. I now know that there is a bug somewhere.. unfortunately, I'm going on vaca tomorrow morning for an entire glorious week in Reno, NV.. Is there anything useful I can get done in a short amount of time to troubleshoot this? -- Tony Nelson Director of IT Operations Starpoint Solutions LLC 115 Broadway, 2nd Fl New York, NY 10006 Quoting "Burton M. Strauss III" <[EMAIL PROTECTED]>: > > n t o p v e r s i o n '3.0.050' p r o b l e m r e p o r t > > Date: Thu Apr 15 15:29:39 2004 > > Problem Report Id: PR_GBHVWYB > > ------------------------------------------------------------------ > > OS(uname): sysname(Linux) release(2.4.25) version(#2 Wed Mar 17 11:47:29 > EST 2004) machine(i686) > > ---------- > > Ok, snipping all the crud out, follow along with my inline notes... > -----Burton > > > I enabled http access to my ntop instance and my graphics are > > displaying just > > fine.. on https, still nothing.. > > Good thought! > > > Log extract > > > > Thu Apr 15 11:27:36 2004 URL_DEBUG: Page: 'index_inner.html' > ... > > Thu Apr 15 11:27:40 2004 URL_DEBUG: Page: 'allProtoDistribution.png' > ... > > Thu Apr 15 11:29:39 2004 URL_DEBUG: Page: 'ntopProblemReport.html' > > This shows you ARE seeing the requests... > > > ------------------------------------------------------------------ > > ntop Web Server > > > > Item..................http://...................https:// > > # Handled Requests.....24.....29 > > # Successful requests (200).....24.....28 > > # Bad (We don't want to talk with you) requests.....0.....0 > > # Invalid requests - 403 FORBIDDEN.....0.....0 > > # Invalid requests - 404 NOT FOUND.....0.....1 > > # Handled SIGPIPE Errors.....0 > > And those counts show that the ntop web server thinks it is serving them up. > > > > What can I do to troubleshoot this? > > Skull sweat. OK, the .png files are not being received by your browser > under https, but are under http and ntop thinks they're being sent. > > So: > > 1. Try another browser or three. > > 1a. If this is IE, try disabling HTTP 1.1. > > So what else? If you look in http.c you see the usual pattern: > > } else if(strncasecmp(pageName, CONST_BAR_ALLPROTO_DIST, > strlen(CONST_BAR_ALLPROTO_DIST)) == 0) { > sendHTTPHeader(MIME_TYPE_CHART_FORMAT, 0, 1); > drawGlobalProtoDistribution(); > printTrailer=0; > > and then graph.c you will see that each graph has a specific pattern, where > it collects some data, calls a graphing routine to create the graphic on the > ntop host and then calls sendGraphFile() to send it to you: > > drawBar(600, 250, /* width/height */ > fd, /* open file pointer */ > idx, /* number of slices */ > lbl, /* slice labels */ > p); /* data array */ > > fclose(fd); > > if(!useFdOpen) > sendGraphFile(fileName, 0); > } > > sendGraphFile() is nothing special it's just a read/write loop that calls > the standard routine sendString() (or in this case, sendStringLen(), but no > matter). > > Now something I read recently mumbled that browsers still don't have good > png handling. So let's eliminate some other variables. > > First: > > 2. Disable gzip (compression) of files. > > In config.h, look for MAKE_WITH_ZLIB and /* it out */ > > 3. More drastic -- try jpg not png. (Try this first with ZLIB enabled, > then - if it still doesn't work - with ZLIB disabled) > > In globals-report.h, change CHART_FORMAT > > then in graph.c, change all the occurances (there are three) of > > gdImagePng(gdImagePtr im, FILE *out); > > to calls to > > void gdImageJpeg(gdImagePtr im, FILE *out, int quality); > > For quality, you'll just have to give a numeric value. -1 ought to work for > this test, based on the comments: > > If quality is negative, the default IJG JPEG quality value (which should > yield a good general quality / size tradeoff for most situations) is used. > Otherwise, for practical purposes, quality should be a value in the range > 0-95, higher quality values usually implying both higher quality and larger > image sizes. > > Then recompile and make install and run. Your graphs should now be jpg not > png - while png is a better choice for charts, at least this ought to > eliminate everything other than the browser's handling of png files. > > > Try those thoughts and let us know what the results are... > > > -----Burton > > > _______________________________________________ > Ntop-dev mailing list > [EMAIL PROTECTED] > http://listgateway.unipi.it/mailman/listinfo/ntop-dev > _______________________________________________ Ntop-dev mailing list [EMAIL PROTECTED] http://listgateway.unipi.it/mailman/listinfo/ntop-dev
