Library: HTTP support (OMHTTP) Include: omhttp.xin

Purpose

The HttpRequest object is a keyed shelf that contains information that can be sent to an HTTP server.

Usage Notes

You create the HttpRequest shelf by using HttpRequestSetFromUrl. A call to this function will create the necessary items for most uses. To use httpRequest components in your program, you must also include the following include statement in your program:

     include "omhttp.xin"

The HTTP request object is a keyed shelf used to create an HTTP-formatted request message, which can then be sent to an HTTP server. Most simple requests can be created using HttpRequestSetFromUrl, which will create sufficient items in the HTTP request shelf to cover most circumstances. The HTTP request shelf contains the following keyed items:

• "last-error" -- a string describing any errors encountered during the last function call. If no errors were detected, it is a zero-length string.
• "host" -- the IP address of the host. This value must be a valid IP address.
• "port" -- the HTTP server port number. This must be a string representation of a valid port number. The default value is "80".
• "proxy-host" -- the IP address of the proxy host. This value must be a valid IP address.
• "proxy-port" -- the HTTP proxy server port number. This must be a string representation of a valid port number. The default value is "80".
• "method" -- the HTTP request method. The default value is "GET".
• "path" -- the path and filename of the resource on the HTTP server to access. The path must begin with the "/" character, which is the default value.
• "http-version" -- the version of HTTP used to format the message. The default value is "HTTP/1.0".
• "cookie-version" -- the version of cookie support. The default value is "1".
• "entity-body" -- additional information to send to the server. The default value is a zero-length string.

Related omhttp - HTTP support library functions:

The functions

• HttpRequestSend
• HttpRequestGetSearchItems
• HttpRequestSetFromUrl
• HttpRequestSetProxy
• HttpRequestSetSearchItem

Example

Within your program, you can create as many instances of the HttpRequest component as you require by declaring global and local variables of type "HttpRequest".

  ; HttpRequestSend
  
  local HttpRequest my-Request
  local HttpResponse get-Response
  
  HttpRequestSetFromUrl my-Request
     from "http://developers.omnimark.com/whats-new.html"
  
  HttpRequestSend my-Request into get-Response timeout 60000
  
  output get-Response{"entity-body"}

Other Library Functions HttpConnectionSendResponse HttpLibraryVersion HttpObjectGetCookieAttributes HttpObjectGetCookieValues HttpObjectGetHeaders HttpObjectGetStatusReport HttpObjectIsInError HttpObjectSetCookieAttribute HttpObjectSetCookieValue HttpObjectSetHeader HttpRequest HttpRequestGetSearchItems HttpRequestSend HttpRequestSetFromUrl HttpRequestSetProxy HttpRequestSetSearchItem HttpResponse HttpResponseOutput HttpServiceAwaitRequest

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