2.6 Web

(require web-server/servlet/web)

The web-server/servlet/web library provides the primary functions of interest for the servlet developer.

(send/back response) → void?

response : response?

Sends response to the client.

current-servlet-continuation-expiration-handler : (parameter/c expiration-handler/c)

Holds the expiration-handler/c to be used when a continuation captured in this context is expired, then looked up.

(send/suspend make-response [exp]) → request?

make-response : response-generator?

exp   :   expiration-handler/c       =   (current-servlet-continuation-expiration-handler)

Captures the current continuation, stores it with exp as the expiration handler, and binds it to a URL. make-response is called with this URL and is expected to generate a response?, which is sent to the client. If the continuation URL is invoked, the captured continuation is invoked and the request is returned from this call to send/suspend.

(continuation-url? u)

→ (or/c false/c (list/c number? number? number?))

u : url?

Checks if u is a URL that refers to a continuation, if so returns the instance id, continuation id, and nonce.

(adjust-timeout! t) → void?

t : number?

Calls the servlet’s manager’s adjust-timeout! function.

(clear-continuation-table!) → void?

Calls the servlet’s manager’s clear-continuation-table! function.

(send/forward make-response [exp]) → request?

make-response : response-generator?

exp   :   expiration-handler/c       =   (current-servlet-continuation-expiration-handler)

Calls clear-continuation-table!, then send/suspend.

(send/finish response) → void?

response : response?

Calls clear-continuation-table!, then send/back.

(send/suspend/dispatch make-response) → any/c

make-response : (embed/url/c . -> . response?)

Calls make-response with a function that, when called with a procedure from request? to any/c will generate a URL, that when invoked will call the function with the request? object and return the result to the caller of send/suspend/dispatch.

(redirect/get) → request?

Calls send/suspend with redirect-to.

(redirect/get/forget) → request?

Calls send/forward with redirect-to.

(embed-ids ids u) → string?

ids : (list/c number? number? number?)

u : url?

Creates a continuation-url?.

current-url-transform : (parameter/c url-transform?)

Holds a url-transform? function that is called by send/suspend to transform the URLs it generates.