The behavior is correct. It's just not the behavior you want. When you start up the web server, the default URL for the page is:
http://localhost:8000/servlets/standalone.rkt So "/puppy.jpg" really means this: http://localhost:8000/puppy.jpg Which works, because puppy.jpg is in server-root-path. Whereas the relative URL "puppy.jpg" means this: http://localhost:8000/servlets/puppy.jpg And indeed, you get no puppy, because the server is looking in the subdirectory "servlets", which doesn't exist in your server-root-path. Thus you have two choices: 1) Add the #:servlet-path parameter, which lets you attach the servlet to a URL at the top level, like so: (serve/servlet start #:server-root-path SOMEPATH #:servlet-path "/standalone.rkt" ) Now when you start the web server, the URL for the page will be: http://localhost:8000/standalone.rkt And when you link to "puppy.jpg" (no forward slash), it will mean: http://localhost:8000/puppy.jpg And you will get a puppy. (Of course, "/puppy.jpg" will still work.) 2) Keep your existing server configuration and instead put a "servlets" subdirectory within D:/Tobias/server-root/htdocs/, and puppy.jpg within it. Then you can use "puppy.jpg" as a relative URL. The docs for serve/servlet cover servlet-path [1], though your question is fair because this consequence is a little unexpected. I don't know the policy reason for having the default servlet-path be "/servlets/standalone.rkt" rather than something at the top level, like "/standalone.rkt". [1] http://docs.racket-lang.org/web-server/run.html?q=serve/servlet On Tue, Jan 28, 2014 at 1:38 PM, Janos Tobias Locsei <jtloc...@cantab.net>wrote: > Hi Matthew, > > Here's an example without using templates, but the same sort of behavior > applies when using templates too. > > #lang racket > > (require web-server/servlet > web-server/servlet-env) > > (define SOMEPATH > (build-path "D:\\Tobias\\server-root")) > > (define (start request) > (response/xexpr > `(html (head (title "Hello world")) > (body (h1 "Hello world") > (img ([src "/puppy.jpg"] [alt "cute puppy"])))))) > ; puppy.jpg is located at D:/Tobias/server-root/htdocs/puppy.jpg > ; Image only displays if I use the leading forward slash like this > > (serve/servlet > start > #:server-root-path SOMEPATH > ) > > I noticed that the leading forward slash is used in the web applications > tutorial of the racket documentation, e.g. when referencing a css file > (search page for "test-static.css"): > http://docs.racket-lang.org/continue/ > > Tobias > > > > > On 28 January 2014 19:27, Matthew Butterick <m...@mbtype.com> wrote: > >> I've not experienced this issue with the Racket web server. When you >> append a leading forward slash to a URL, you're obviously telling the >> browser something completely different about where to find the file. I >> would suspect it has something to do with either file organization, Racket >> web server configuration, or both. >> >> Where are myimage.jpg and mytemplate.html in relation to one another? In >> the same directory? >> >> >> On Tue, Jan 28, 2014 at 7:04 AM, Janos Tobias Locsei <jtloc...@cantab.net >> > wrote: >> >>> I noticed that when using the racket web server one needs to include a >>> leading forward slash when referencing static files e.g. a style.css or an >>> image.jpg. Is there a rationale for this? It's different than the usual >>> html convention, and it means that when using html template files it's not >>> possible to preview the template in the web browser without running the web >>> server. >>> >>> For example, I have a file mytemplate.html that includes the line >>> >>> <img src="/myimage.jpg" /> >>> >>> The leading "/" is required for the image to be found by the racket web >>> server but it means that I can't preview mytemplate.html in my web browser >>> without first firing up the racket web server. >>> >>> It's not a big deal but I'm just wondering if there's a way around this. >>> >>> Tobias >>> >>> >>> >>> >>> >>> ____________________ >>> Racket Users list: >>> http://lists.racket-lang.org/users >>> >>> >> >
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