October 2005 - tbnl-devel@common-lisp.net

[tbnl-devel] tbnl freeze
by Steve Huffman 30 Apr '06

30 Apr '06

Hi all, I'm working on reddit.com, which uses TBNL as its web framework. For the most part, all is well, but I've been running into an error lately that is causing me to worry. Basically, the symptom of the problem is that our website appears to pause, and all requests just hang (eventually they'll timeout on the browser side). I work against our server using remote SLIME. The SLIME session does not hang, but in order to bring the website back to life I log into our web server, use attachtty to view the running lisp process, and hit ctrl + c a few times, after which a debugger will pop open in Emacs that I can abort. I'm running CMUCL 19a on a FreeBSD box. I use apache and mod_lisp in front of TBNL. I haven't been able to find out what causes this lockup, nor do I understand why I must open the process on the web server (when I'm already cruising in SLIME) to wake it up. Has anyone seen any issues like this before? Or perhaps know if this is even a TBNL issue? I've pasted the output I see from the lisp process (via attachtty) and in my emacs session (after I send an interrupt). Any help would be greatly appreciated, Steve Huffman In attachtty I'll see something like this: Interrupted at #x2811F14E. [Condition of type SIMPLE-CONDITION] Restarts: 0: [CONTINUE] Return from BREAK. 1: [DESTROY ] Destroy the process Debug (type H for help) (UNIX::SIGINT-HANDLER #<unused-arg> #<unused-arg> #.(SYSTEM:INT-SAP #x47FD789C)) Source: Error finding source: Error in function DEBUG::GET-FILE-TOP-LEVEL-FORM: Source file no longer exists: target:code/signal.lisp. 0] and in emacs I'll see something like this: Interrupted at #x2811F14E. [Condition of type SIMPLE-CONDITION] Restarts: 0: [CONTINUE] Return from BREAK. 1: [DESTROY] Destroy the process Backtrace: 0: (UNIX::SIGINT-HANDLER #<#1=unused-arg> #<#1#> #.(SYSTEM:INT-SAP #x47FD789C)) 1: (UNIX::SIGINT-HANDLER 3 #<#1=unused-arg> #<#1#> #.(SYSTEM:INT- SAP #x47FD789C))[:EXTERNAL] 2: ("Foreign function call land") 3: ("Foreign function call land") 4: ("Foreign function call land") 5: ("Foreign function call land") 6: ("Foreign function call land") 7: (LISP::FD-STREAM-READ-N-BYTES #<Stream for descriptor 8> "" 0 14 ...) 8: (LISP::FD-STREAM-READ-N-BYTES 5 #<Stream for descriptor 8> "" 0 ...)[:EXTERNAL] 9: (LISP::READ-INTO-SIMPLE-STRING "" #<Stream for descriptor 8> 0 14) 10: (READ-SEQUENCE "" #<Stream for descriptor 8> :START 0 ...) 11: ((METHOD INITIALIZE-INSTANCE (:AFTER) (TBNL::REQUEST)) (#(1 2 0 3 5 ...) . #()) #<#1=unused-arg> #<TBNL::REQUEST {49094BA5}> #<#1#>) 12: ((MAKE-INSTANCE TBNL::REQUEST :HEADERS-IN PCL::|.P0.|) (("content- stream" . #<Stream for descriptor 8>) ("content-length" . "14") ("content-type" . "application/x-www-form-urlencoded") ("remote-ip- addr" . "172.133.113.57") ("remote-ip-port" . "3332") ...)) 13: (TBNL::PROCESS-REQUEST (("content-stream" . #<Stream for descriptor 8>) ("content-length" . "14") ("content-type" . "application/x-www-form-urlencoded") ("remote-ip-addr" . "172.133.113.57") ("remote-ip-port" . "3332") ...)) 14: (TBNL::LISTEN-FOR-REQUEST #<Stream for descriptor 8> TBNL::PROCESS-REQUEST)

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[tbnl-devel] Jpg/png upload/download issues while using cvs SBCL and "stand-alone" TBNL
by Ignas Mikalajunas 03 Nov '05

03 Nov '05

Hi, I am not 100% sure that it is a bug in tbnl not in my setup though when using SBCL (cvs version 2005-10-07) it seems that tbnl refuses to serve jpg/png files ... I have tried launching the test application and it works fine except for the "Binary data, delivered from file (a picture)" "Binary data, delivered from RAM (same picture)" sections :/ I thought that the problem might be in the dispatcher, but i could not upload jpg/png files through "File Uploads" too (post script files uploaded/downloaded fine) i was just geting back to the upload page after clicking on the submit button. At the same time - the same set up worked fine on CMUCL, i mean i could see example image and could download/upload any files i want. I got no errors on the lisp side, so i can't send you any tracebacks. Ignas Mikalajūnas

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[tbnl-devel] recompute-request-parameters
by Mac Chan 31 Oct '05

31 Oct '05

Hi, I'm looking at parameter-test in the test.lisp examples. One thing I don't understand is, why do we have to recompute it in user code, instead of determining the correct content-type in initialize-instance :after and do the right thing there? Maybe there's a reason behind this? Thanks, -- Mac (defun parameter-test (&key (method :get) (charset :iso-8859-1)) ....... (recompute-request-parameters :external-format (case charset (:iso-8859-1 +latin-1+) (:utf-8 +utf-8+))) (defmethod initialize-instance :after ((request request) &rest init-args) ........ (setq post-parameters ........ (form-url-encoded-list-to-alist ;; *** we can examine headers here and pass the correct content type to form-url-encoded-list-to-alist (defun form-url-encoded-list-to-alist (form-url-encoded-list &optional (external-format *tbnl-default-external-format*))

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[tbnl-devel] New version 0.8.4
by Edi Weitz 21 Oct '05

21 Oct '05

ChangeLog: Version 0.8.4 2005-10-21 Provide REMOTE-ADDR if connected directly (for LispWorks and AllegroCL) Show remote user and address (if available) in non-Apache logs Mention Debian package in docs Download: <http://weitz.de/files/tbnl.tar.gz> Have fun, Edi.

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[tbnl-devel] Araneida ...
by Nicolas Lamirault 20 Oct '05

20 Oct '05

hello, I would like to test araneida with TBNL. so i start slime : CL-USER> (asdf:operate 'asdf:load-op :tbnl) CL-USER> (asdf:operate 'asdf:load-op :araneida) CL-USER> (find-class 'tbnl:tbnl-araneida-handler) There is no class named TBNL:TBNL-ARANEIDA-HANDLER. [Condition of type SIMPLE-ERROR] Restarts: 0: [ABORT] Abort handling SLIME request. 1: [TERMINATE-THREAD] Terminate this thread (#<THREAD "repl-thread" {98EA1D1}>) Backtrace: 0: (SB-PCL::FIND-CLASS-FROM-CELL TBNL:TBNL-ARANEIDA-HANDLER (NIL #<FUNCTION (LAMBDA #) {1014ECD}>) T) 1: (SB-INT:EVAL-IN-LEXENV (FIND-CLASS (QUOTE TBNL:TBNL-ARANEIDA-HANDLER)) #<NULL-LEXENV>) someone know why i have this error ? PS : i use SBCL 0.9.4.65 (Debian), araneida 0.9-a2, and tbnl 0.8.1 thanks for any help regards

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[tbnl-devel] Re: TBNL and Araneida
by Edi Weitz 12 Oct '05

12 Oct '05

Hi Alan! I'm Cc'ing my replies to tbnl-devel so people there know what's going on. On Tue, 11 Oct 2005 19:44:47 -0500, Alan Shields <Alan-Shields(a)omrf.ouhsc.edu> wrote: > I don't normally read the TBNL mailing list (sorry!), Hehe. No reason to apologize - you don't use it, so why should you read the mailing list? > but someone pointed me there today and I noticed one of your users > was having trouble, and you recommended a certain patch to Araneida. > > Just wanted you to know that I'm looking at the patch and figuring > out how best to integrate it permanently with Araneida so you can > eliminate this nuisance. Great, thanks. > I might have some questions for you later on if you wouldn't mind. Sure, no problem. Cheers, Edi.

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[tbnl-devel] Re: oh! Almost forgot
by Edi Weitz 12 Oct '05

12 Oct '05

On Tue, 11 Oct 2005 19:47:34 -0500, Alan Shields <Alan-Shields(a)omrf.ouhsc.edu> wrote: > Would you mind reminding your users that support email for Araneida > is best sent to lispweb? Maybe a mention in the docs. Will do. > I never saw any of the current fellow's requests for help on lispweb > nor in my mailbox, though that might be my bad memory at work. > > The probability of danb responding to any requests is minimal. Yeah. He wasn't very responsive even before he decided to be a pro-skater... :) Cheers, Edi.

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[tbnl-devel] startup-idle-and-top-level-loops
by Adam Thorsen 11 Oct '05

11 Oct '05

In order to keep CMUCL from freezing randomly when using TBNL, I need to run this: (mp::startup-idle-and-top-level-loops) However, this function does not return. How/when should I call this function? Thanks, -Adam

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[tbnl-devel] Firefox
by Anthony F 10 Oct '05

10 Oct '05

Hi all, I recently started playing with LispWorks, Apache w/ mod_lisp2 and TBNL. I'm using the newest TBNL as well as the newest versions of all its dependencies. I'm using the free version of LispWorks and therefore have a heap size limit, and I'm using Windows XP Pro. The problem was that I after I got everything working I was randomly clicking on the test page link when LispWorks quickly died after a few simple clicks. It seemed to leak 3-4 megs per click! Upon further investigation it turns out this is a Firefox specific problem (haven't tested Opera yet :) ) and it doesn't happen in IE. Checking the Apache logs I get lots of these when browsing with Firefox: [Thu Sep 29 19:08:10 2005] [notice] [TBNL] No session for session identifier '1:158C42649C449770460538C62DC7A0EF' (User-Agent: 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7', IP: '127.0.0.1') So obviously there is a session handling problem with Firefox? I'm guessing that it's starting a new session with each refresh, and hence the memory usage. I'll look into it further and try to get into some of the TBNL code, but I'm a rookie with Lisp so it might take me a while! Any help would be appreciated... Thanks! Anthony

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[tbnl-devel] Unicode Parameters in OpenMCL
by Timothy Bennett 08 Oct '05

08 Oct '05

I have come up with a small way to read and correctly display form data with non-ascii characters in OpenMCL, which does not support Unicode. Or at least, I think I have. There may be good reason not to do things this way - someone let me know if that is the case. First, I redefined escape-for-html so that it would return NIL if its parameter was NIL instead of generating an error. Then I just used escape-for-html instead of escape-string-all when displaying the parameter (I was just playing around with the tests that came with TBNL here). My question is this: are there problems that can arise with the use of escape-for-html that escape-string-all avoids? If not, then I'll just be using this. Tim Bennett

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