seaside March 2006

seaside@lists.squeakfoundation.org

66 participants
93 discussions

RE: [Seaside] BGGoodBadChart in SeaChart package
by Ramon Leon 28 Mar '06

28 Mar '06

> -----Original Message----- > From: seaside-bounces(a)lists.squeakfoundation.org > [mailto:seaside-bounces@lists.squeakfoundation.org] On Behalf > Of John Pierce > Sent: Tuesday, March 28, 2006 1:15 PM > To: The Squeak Enterprise Aubergines Server - general discussion. > Subject: [Seaside] BGGoodBadChart in SeaChart package > > Hi all, > > I'm just not seeing something here and need some assistance. > > The Seaside package called SeaChart on SqueakSource appears > to require some capability from ByteArray. Specifically, > asMIMEDocument is being sent to an instance of ByteArray and > that's not in my new image with all the latest Seaside, > Scriptalicous, and SeaChart software installed. > > Check out BGGoodBadChart#updateRoot: > > It puts these byte arrays into some instance variables that > ultimate the client web browser comes back around and > requests. Then at that time, Squeak gets mad as it trys to > convert the ByteArrays into MIMEDocuments and my image has no > such conversion. > > Any ideas? > > John My image has that, it's an extension from Pier-Seaside. Might want to let the author know about that dependency. It looks like this, if you just want to hack it for now... asMIMEDocument ^ MIMEDocument content: self

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Kom/Seaside/Apache, gzip?
by William Harford 25 Mar '06

25 Mar '06

Hi all, Most of the content that we serve up using Apache is gziped either using Apache's mod_deflate ( we used mod_gzip with apache 1.3) or using PHP's output buffering capabilities. My users have become accustom to the quick download times of our web biased applications. Gziping content makes a huge difference with our applications. Does Kom support this? If it does not appear that it would be a huge undertaking. Any pointers on where to begin ? Does anyone know if Apache can act a a gzip proxy ? Gziping non-ziped content served from seaside. Has any one done this? Any examples? The only idea I had was to use mod_php/mod_perl to handle the proxying and gziping from a seaside image. I am not sure what the performance hit would be but it just feels hackish to me. In my mind the best solution would be Gzip support in Kom. Any ideas? Thanks Will

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Possible OT: Strange Seaside/VW oddity -- Is there some sort of cacheing in Seaside/VW or ??
by Rick Flower 25 Mar '06

25 Mar '06

I've got what I believe should be a URL that maps to a css file in my file system hierarchy.. However, when I try to get it using "wget" (on Unix) or Firefox, instead of getting the contents of the css file, I get the main site page for my seaside site instead.. I've even got a truss output showing what I'm seeing.. Here's my CSS file for reference (css/screen.css) : /* typography rules */ @import url("typo.css"); /* main layout */ @import url("layout.css"); Here's the output from truss attached to my VW session and the resulting output after I do a get of the css file.. Is this normal or am I seeing things? For the output below, look for the "write(9, ..." to see the output of what should be the CSS file.. If anyone believe's this to be a VW issue, I'll pester that list I guess.. Just not sure what I'm doing wrong here or if anyones seen this before with VW/Seaside.. -- Rick --- SIGIO (I/O possible) @ 0 (0) --- rt_sigreturn(0x400) = 1 getitimer(ITIMER_REAL, {it_interval={0, 0}, it_value={8, 628688}}) = 0 ioctl(3, FIONREAD, [0]) = 0 select(4, [3], NULL, NULL, {0, 0}) = 0 (Timeout) select(1024, [7], [], [7], {0, 0}) = 1 (in [7], left {0, 0}) rt_sigprocmask(SIG_SETMASK, [FPE PIPE ALRM TERM CHLD URG IO], NULL, 8) = 0 accept(7, {sa_family=AF_INET, sin_port=htons(54675), sin_addr=inet_addr("10.0.1.198")}, [16]) = 9 fcntl64(9, F_SETFD, FD_CLOEXEC) = 0 fcntl64(9, F_GETFL) = 0x2 (flags O_RDWR) fcntl64(9, F_SETFL, O_RDWR|O_NONBLOCK) = 0 fcntl64(9, F_SETOWN, 9664) = 0 fcntl64(9, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK) fcntl64(9, F_SETFL, O_RDWR|O_NONBLOCK|O_ASYNC) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_SETMASK, [FPE PIPE ALRM TERM CHLD URG IO], NULL, 8) = 0 getpeername(9, {sa_family=AF_INET, sin_port=htons(54675), sin_addr=inet_addr("10.0.1.198")}, [16]) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 select(1024, [7], NULL, NULL, {0, 0}) = 0 (Timeout) gettimeofday({1143238253, 380208}, NULL) = 0 rt_sigprocmask(SIG_SETMASK, [FPE PIPE ALRM TERM CHLD URG IO], NULL, 8) = 0 read(9, "GET /seaside/go/mywebapp/css/screen.css HTTP/1.0\r\nHost: 10.0.1.198:8008\r\nUser-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7\r\nAccept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5\r\nAccept-Language: en-us,en;q=0.5\r\nAccept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\nAuthorization: Basic c2Vhc2lkZTphZG1pbg==\r\nCookie: VW-WTK-sessionkey=6366233203123413320341141380\r\nConnection: close\r\n\r\n", 20480) = 484 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_SETMASK, [FPE PIPE ALRM TERM CHLD URG IO], NULL, 8) = 0 getpeername(9, {sa_family=AF_INET, sin_port=htons(54675), sin_addr=inet_addr("10.0.1.198")}, [16]) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 gettimeofday({1143238253, 385688}, NULL) = 0 gettimeofday({1143238253, 386958}, NULL) = 0 gettimeofday({1143238253, 392559}, NULL) = 0 gettimeofday({1143238253, 392992}, NULL) = 0 gettimeofday({1143238253, 393343}, NULL) = 0 gettimeofday({1143238253, 398669}, NULL) = 0 gettimeofday({1143238253, 403968}, NULL) = 0 gettimeofday({1143238253, 409631}, NULL) = 0 rt_sigprocmask(SIG_SETMASK, [FPE PIPE ALRM TERM CHLD URG IO], NULL, 8) = 0 write(9, "HTTP/1.0 200 \r\ncache-control:No-cache\r\ncontent-type:text/html; charset=utf-8\r\ncache-control:no-cache\r\nexpires:-1\r\npragma:no-cache\r\ndate:Fri, 24 Mar 2006 22:10:53 GMT\r\nserver:Cincom Smalltalk VisualWorks 7.4\r\nmime-version:1.0\r\n\r\n<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"\r\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\"><html xml:lang=\"en\" xmlns=\"http://www.w3.org/1999/xhtml\" lang=\"en\"><head><title>Seaside</title><meta content=\"text/html; charset=utf-8\" http-equiv=\"Content-Type\"></meta><link rel=\"stylesheet\" type=\"text/css\" href=\"/mywebapp/css/screen.css\"></link><link rel=\"stylesheet\" type=\"text/css\" href=\"/seaside/go/mywebapp?_s=tTvpKbsoujWNqKWn\" /><link rel=\"stylesheet\" type=\"text/css\" href=\"/seaside/go/mywebapp?_s=VfuOOOWjuNvihnmh\" /><link rel=\"stylesheet\" type=\"text/css\" href=\"/seaside/go/mywebapp?_s=SxebOoDlIuTtalJi\" /><link rel=\"stylesheet\" type=\"text/css\" href=\"/seaside/go/mywebapp?_s=uunxmzFkVAIpxmAc\" /><link rel=\"stylesheet\" type=\"text/css\" href=\"/seaside/go/mywebapp?_s=tgJovPuAlGfOZtZC\" /><script type=\"text/javascript\" src=\"/seaside/go/mywebapp?_s=EnCzDYdZvpqwfMQB\"></script><script type=\"text/javascript\" src=\"/seaside/go/mywebapp?_s=hypubVcsaqdhlOZX\"></script></head><body onload=\"onLoad()\" onkeydown=\"onKeyDown(event)\"><div id=\"frameContent\"><div id=\"container\"><div id=\"header\"></div><div id=\"mainnav\"><ul><li><a href=\"?_s=fRPJDoVKyziFKqIC&_k=HdFZkVJf&1\">Home</a></li><li><a href=\"?_s=fRPJDoVKyziFKqIC&_k=HdFZkVJf&2\">About My-WebApp</a></li><li><a href=\"?_s=fRPJDoVKyziFKqIC&_k=HdFZkVJf&3\">Enroll</a></li><li><a href=\"?_s=fRPJDoVKyziFKqIC&_k=HdFZkVJf&4\">Contact Us</a></li></ul></div><div style=\"height: 300px\"><div id=\"loginLeftBox\"><br /><form method=\"post\"><br /><br />Username:<br /><input name=\"5\" value=\"\" type=\"text\" class=\"text\" /><br /><br />Password:<br /><input name=\"6\" value=\"\" type=\"password\" class=\"password\" /><p></p><input name=\"7\" value=\"Login!\" type=\"submit\" class=\"submit\" /><input name=\"_s\" value=\"fRPJDoVKyziFKqIC\" type=\"hidden\" class=\"hidden\" /> <input name=\"_k\" value=\"HdFZkVJf\" type=\"hidden\" class=\"hidden\" /> </form></div><div id=\"loginRightBox\"><p style=\"font-size: x-large; text-align:center\">Welcome to My Web App</p><p style=\"padding-left: 6px; padding-right: 6px;\ttext-align: justify\">More to come.. Stay tuned!</p><p style=\"padding-left: 6px; padding-right: 6px;\ttext-align: justify;\"> If you have an account here, please login using the box just to the left. Specify your username/password. Use \\"demo/demo\\" as the username/password combination</p></div></div><div style=\"padding-top: 10px\"><p style=\"float:left\"><a href=\"http://jigsaw.w3.org/css-validator\"><img alt=\"Valid CSS!\" style=\"border:0; width:88px;height:31px\" src=\"/mywebapp/css/vcss.gif\" /></a></p><p style=\"float:right\"><a href=\"http://validator.w3.org/check?uri=referer\"><img height=\"31\" alt=\"Valid XHTML 1.0 Transitional\" src=\"/mywebapp/css/valid-xhtml10.png\" width=\"88\" /></a></p></div></div></div><"..., 3753) = 3753 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 gettimeofday({1143238253, 415773}, NULL) = 0 gettimeofday({1143238253, 415939}, NULL) = 0 close(9) = 0 rt_sigprocmask(SIG_SETMASK, [FPE PIPE ALRM TERM CHLD URG IO], NULL, 8) = 0 write(8, "10.0.1.198: seaside GET /seaside/go/mywebapp/css/screen.css -> 200 text/html Fri, 24 Mar 2006 22:10:53 GMT\n", 107) = 107 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 getitimer(ITIMER_REAL, {it_interval={0, 0}, it_value={8, 582695}}) = 0 select(1024, [3 7], [], [3 7], {8, 592695} <unfinished ...>

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Home Link
by Zulq Alam 25 Mar '06

25 Mar '06

Hi, I've been trying to implement a way for any component or task to send the user to the root page, i.e. home. I'm having some difficulties. I have added an instance variable 'root' and #root which returns the current component as the root if #root:aComponent has not already been sent. This is in the superclasses to all my components and tasks which extend WAComponent and WATask respectively. root ^ root ifNil: [root := self] root: aComponent root := aComponent So, before I call any component I pass the current root to the called component. self call: (aComponent root: self root) Assuming all the components I call understand what to do with a root then at any given time a component will have a reference to the root component via "self root". Now, a link home takes a simple form. html anchorWithAction: [self root home] text: 'Home' And this seems to work fine. I don't appear to be able to call home from a Task though. go self root home # PFView(Object)>>doesNotUnderstand: #owner self a PFView temps aMessage owner inst vars decoration a WAStateHolder(a PFView) root a PFView I've attached the full stack trace from the call to #renderContentOn of the Task. I'm not sure what I'm doing wrong, any help would be appreciated. Thanks, Zulq.

2 5

WeakArray (again)
by William Harford 25 Mar '06

25 Mar '06

Hi all, The WeakArray finalizationProcess is delaying seaside page delivery by a couple seconds. I know this problem pops up on this list every once and a while and the only "solution" I have seen is to use IdentityDictionary. My problem is not that the WeakArray finalizationProces is taking over my image it just running at bad times. I noticed that it runs at userInterruptPriority. I am assuming that that is done to avoid some sort of race condition. Would it be safe for it to run at systemBackgroundPriority or userBackgroundPriority in an image that is only used for seaside ? Would there be a way to run the finalizationProces at more controlled times like after the seaside request has been handled or even every so many minutes. Would doing something like the below be a bad idea (it would be forked to a lower process) [true] whileTrue:[ WeakArray runningFinalizationProcess terminate. (Delay forSeconds: 240) wait. WeakArray restartFinalizationProces. ]. I know the above might produce unexpected behavior in some applications but would it cause any problems? The WeakArray issue is becoming a huge problem for us and I would love to see some sort of resolution to it. Thanks Will

3 5

Task Loop
by Zulq Alam 25 Mar '06

25 Mar '06

Hi, I'm a bit confused by WATask, maybe you can help me please? When implementing #renderConentOn in WAComponent I know that if I don't send self #answer that WAComponent will remain visible (assuming I don't call anything else). This is not the same with a WATask which answers automatically when #go terminates. I would like to have a WATask subclass that does the following. 1) Call a WAComponent which has a form to collect some information. This WAComponent will only answer if all the fields are syntactically valid. 2) Using the inputs from the component called in (1) perform some work. 3) If this work fails (i.e. the inputs were semantically invalid) start from (1). I was expecting this to happen without looping in #go. An alternative to looping would be to have the view call the task rather than answer to the task but I think this breaks the encapsulation of the task. I though I might find some answers in WATask... renderContentOn: html self session redirectTo: (html urlForAction: [[self answer: self go] repeat]) This looks like it wants to loop to me! If not, what's the #repeat for? So, I'm quite confused now. Thanks, Zulq.

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404 on seaside.st Tutorial page homepage
by Frank Sukhu 24 Mar '06

24 Mar '06

> ok, I solved the situation. > > The web server used to generate an index.html listing the files, > but it doesn't anymore ... > > Romain > >> It's the link to: http://www.inf.unisi.ch/~robbesr/seaside <http://www.inf.unisi.ch/%7Erobbesr/seaside> It still seems to be messed up, at least when I try it.

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RE: [Seaside] WeakArray (again)
by Bany, Michel 24 Mar '06

24 Mar '06

Squeak or VW ? You did not say.

2 1

404 on seaside.st Tutorial page homepage
by Simon Kirk 24 Mar '06

24 Mar '06

Hi all - just a quick note (hope somebody's watching who can sort this out :) that there's a 404 under the tutorial link to Romain Robbes' Seaside turorial. It's the link to: http://www.inf.unisi.ch/~robbesr/seaside Cheers, S

2 1

Changing root path of seaside to something other than /seaside/go/mywebapp
by Rick Flower 23 Mar '06

23 Mar '06

Hi all.. I'm playing games with reverse proxies and found one that is easy to configure, but I don't believe it allows address rewriting like Apache does.. To that end, I'm wondering if I've got a static Seaside image that runs as part of a VW environment, has anyone tried forcing the internal web server that spits out Seaside pages to have an address of "/" instead of "/seaside/go/mywebapp"? I would assume that if this is possible most URLs would look something like "localhost:8008/?_s=NNNNN..." or similar instead of "localhost:8008/seaside/go/mywebapp/?_s=NNNNN...". So, is this possible and if so how? Is this a matter of closing down the internal VW web server and using vanilla Kom instead with some tweaks? Also -- if this is more oriented towards VW and not really Seaside specific, then I'll be happy to pester the VW folks.. Thanks! -- Rick

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seaside March 2006