servlet docs

svn: r6485

collects/web-server/docs/reference/servlet.scrbl

@@ -5,7 +5,7 @@
 
 The @file{web-server} allows servlets to be written in Scheme. It
 provides the supporting API, described below, for the construction
-of these servlets.
+of these servlets. This API is provided by @file{servlet.ss}.
 
 @local-table-of-contents[]
 
@@ -50,12 +50,83 @@ provides:
 @; ------------------------------------------------------------
 @section[#:tag "servlet-structs.ss"]{Contracts}
 
-XXX
+@file{servlet/servlet-structs.ss} provides a number of contracts
+for use in servlets.
+
+@defthing[servlet-response? contract?]{Equivalent to @scheme[any/c].}
+
+@; XXX Remove callbacks
+@defproc[(xexpr/callback? [v any/c])
+         boolean?]{
+ Checks if @scheme[v] matches @scheme[xexpr?], except that embedded
+ procedures are allowed.
+}
+                  
+@defthing[response-generator? contract?]{Equivalent to @scheme[(k-url? . -> . servlet-response?)].}
+
+@defthing[k-url? (any/c . -> . boolean?)]{Equivalent to @scheme[string?].}
+
+@defthing[url-transform? contract?]{Equivalent to @scheme[(k-url? . -> . k-url?)].}
+
+@defthing[expiration-handler? contract?]{Equivalent to @scheme[(or/c false/c (request? . -> . response?))].}
+
+@defthing[embed/url? contract?]{Equivalent to @scheme[(((request? . -> . any/c)) (expiration-handler?) . opt-> . string?)].}
 
 @; ------------------------------------------------------------
 @section[#:tag "request-structs.ss"]{HTTP Requests}
 
-XXX
+@; XXX Create http sub-directory
+@file{private/request-structs.ss} provides a number of structures and functions
+related to HTTP request data structures.
+
+@defstruct[header ([field bytes?]
+                   [value bytes?])]{
+ Represents a header of @scheme[field] to @scheme[value].
+}
+
+@defproc[(headers-assq [id bytes?] [heads (listof header?)])
+         (or/c false/c header?)]{
+ Returns the header with a field equal to @scheme[id] from @scheme[heads] or @scheme[#f].
+}
+
+@defproc[(headers-assq* [id bytes?] [heads (listof header?)])
+         (or/c false/c header?)]{
+ Returns the header with a field case-insensitively equal to @scheme[id] from @scheme[heads] or @scheme[#f].
+}
+
+@defstruct[binding ([id bytes?])]{Represents a binding of @scheme[id].}
+
+@defstruct[(binding:form binding) ([id bytes?]
+                                   [value bytes?])]{
+ Represents a form binding of @scheme[id] to @scheme[value].
+}
+                                                   
+@defstruct[(binding:file binding) ([id bytes?]
+                                   [filename bytes?]
+                                   [content bytes?])]{
+ Represents the uploading of the file @scheme[filename] with the id @scheme[id]
+ and the content @scheme[content].
+} 
+
+@defproc[(bindings-assq [id bytes?] [binds (listof binding?)])
+         (or/c false/c binding?)]{
+ Returns the binding with an id equal to @scheme[id] from @scheme[binds] or @scheme[#f].
+}
+                                 
+@; XXX Subtypes of request                                 
+@defstruct[request ([method symbol?] 
+                    [uri url?] 
+                    [headers/raw (listof header?)]
+                    [bindings/raw (listof binding?)]
+                    [post-data/raw (or/c false/c bytes?)]
+                    [host-ip string?]
+                    [host-port number?]
+                    [client-ip string?])]{
+ An HTTP @scheme[method] request to @scheme[uri] from @scheme[client-ip]
+ to the server at @scheme[host-ip]:@scheme[host-port] with @scheme[headers/raw]
+ headers, @scheme[bindings/raw] GET and POST queries and @scheme[post-data/raw]
+ POST data.
+}
 
 @; ------------------------------------------------------------
 @section[#:tag "bindings.ss"]{Request Bindings}