Application service module that provides OpenInsight HTTP communication features.

Syntax

Response = HTTPClient_Services(@Service, @Params)

Returns

The meaning of the response value depends on the service.

Parameters

ParameterDescription
@ServiceThe name of the service being requested. Required.
@ParamsGeneric parameters. Refer to a specific service to determine the actual parameters used.

Remarks 

HTTPClient_Services provides very useful application services so OpenInsight applications can make HTTP requests to other web servers. The response to each request is kept in memory until the next request is made, thus allowing the developer to get various HTTP response results when it is convenient (such as the body, status code, or response header values).

Services

ServiceDescription
SendHTTPRequest

Usage:
HTTPClient_Services('SendHTTPRequest', Method, URL, HeaderList, Body, ProxyUser, ProxyPassword, UseAsynchronous, UseClientXMLHTTP, ClientCertPath)

Comments:
Calls the indicated HTTP web service routine. This is the primary service of this module. All other services either support this SendHTTPRequest or are dependent upon SendHTTPRequest completing a request. The arguments are defined as follows:

ArgumentDescriptionImportance
MethodThe HTTP method to submit to the server.Required
URLThe URL receiving the HTTP request.Required
HeaderListAn @FM/@VM list of request header names and values.Optional
BodyThe request body to be sent to the server.Optional
ProxyUserUsername needed to authenticate against a proxy serverOptional
ProxyPasswordPassword needed to authenticate against a proxy server.Optional
UseAsynchronousFlag to determine if the HTTP request should be processed asynchronously. Default is True.Optional
UseXMLHTTPFlag to determine if client XMLHTTP or server XMLHTTP should be used. Default is server XMLHTTP.Optional
ClientCertPathPath to a client-side certificate. This is usually in Location\Certificate Store\Subject format.Optional

Returns:
The HTTP response body from the server. The HTTP response body can also be retreived via the GetResponseBody service.

SetRequestHeaderFields

Usage:
HTTPClient_Services('SetRequestHeaderFields', HeaderList)

Comments:
Sets the Request Header Fields as indicated by the HeaderList argument. The HeaderList should not be formatted as a list rather than an associated multivalue array. This is easier for the developer to manage in the code that calls this service.

Returns:
N/A

SetRequestHeaderField

Usage:
HTTPClient_Services('SetRequestHeaderField', Name, Value)

Comments:
Sets the indicated Request Header Field with the indicated value.

Returns:
N/A

GetRequestHeaderFields

Usage:
HTTPClient_Services('GetRequestHeaderFields')

Comments:
Returns all of the Request Header Field names and values. This returns an @FM/@VM list of names and values. This is called from the SendHTTPRequest service automatically. The developer does not need to use this service.

Returns:
An @FM/@VM list of request header names and values.

GetRequestHeaderField

Usage:
HTTPClient_Services('GetRequestHeaderField', Name)

Comments:
Returns the value previously set for the indicated Request Header Field.

Returns:
The value previously set for the indicated Request Header Field.

SetResponseHeaderField

Usage:
HTTPClient_Services('SetResponseHeaderField', Name, Value)

Comments:
Sets the indicated Response Header Field with the indicated value. This is called from the SendHTTPRequest service automatically after retrieving the response headers fields from the server.

Returns:
N/A

GetResponseHeaderFields

Usage:
HTTPClient_Services('GetResponseHeaderFields')

Comments:
Returns all of the Response Header Field names and values. This returns an @FM/@VM list of names and values.

Returns:
An @FM/@VM list of response header names and values.

GetResponseHeaderField

Usage:
HTTPClient_Services('GetResponseHeaderField', Name, Delimiter)

Comments:
Returns the value previously set for the indicated Response Header Field. The Name argument is case-insensitive but if the indicated Response Header Field has not been set then an error condition will be set.

Returns:
The value previously set for the indicated Response Header Field. 

GetCookies

Usage:
HTTPClient_Services('GetCookie', Name, IgnoreAttributes)

Comments:
Returns the value for the indicated cookie name.

Returns:
See comments.

GetCookie

Usage:
HTTPClient_Services('GetCookies', Delimiter)

Comments:
Returns all cookie strings from the response headers.

Returns:
See comments.

SetResponseStatusCode

Usage:
HTTPClient_Services('SetResponseStatusCode', Code)

Comments:
Sets the response status code generated by the most recent HTTP request. This is called from the SendHTTPRequest service automatically after retrieving the response status from the server.

Returns:
N/A

GetResponseStatusCode

Usage:
HTTPClient_Services('GetResponseStatusCode')

Comments:
Gets the response status code generated by the most recent HTTP request.

Returns:
The response status code generated by the most recent HTTP request.

SetResponseStatusPhrase

Usage:
HTTPClient_Services('SetResponseStatusPhrase', Phrase)

Comments:
Sets the response status phrase generated by the most recent HTTP request. This is called from the SendHTTPRequest service automatically after retrieving the response status phrase from the server.

Returns:
N/A

GetResponseStatusPhrase

Usage:
HTTPClient_Services('GetResponseStatusPhrase')

Comments:
Gets the response status phrase generated by the most recent HTTP request.

Returns:
The response status phrase generated by the most recent HTTP request.

SetResponseBody

Usage:
HTTPClient_Services('SetResponseBody', Body)

Comments:
Sets the response body generated by the most recent HTTP request. This is called from the SendHTTPRequest service automatically after retrieving the response body from the server.

Returns:
N/A

GetResponseBody

Usage:
HTTPClient_Services('GetResponseBody')

Comments:
Gets the response body generated by the most recent HTTP request. This is the same response that the SendHTTPRequest service returns.

Returns:
The response body generated by the most recent HTTP request.

SetTimeoutDuration

Usage:
HTTPClient_Services('SetTimeoutDuration', TimeoutDuration)

Comments:
Sets the timeout duration that will be used before an HTTP request will abort. This is only applicable if the request is asynchronous. If the timeout duration is empty, a default setting of 30 minutes (1800 seconds) will be set.

Returns:
N/A

GetTimeoutDuration

Usage:
HTTPClient_Services('GetTimeoutDuration')

Comments:
Returns the timeout duration that will be used before an HTTP request will abort. This is only applicable if the request is asynchronous. If the timeout duration is empty, a default setting of 30 minutes (1800) seconds) will be returned.

Returns:
The timeout duration that will be used before an HTTP request will abort.

ClearResponseSettings

Usage:
HTTPClient_Services('ClearResponseSettings')

Comments:
Clears all of the global common variables used for responses. This is called from the SendHTTPRequest service automatically. The developer does not need to use this service.

Returns:
N/A

ClearRequestSettings

Usage:
HTTPClient_Services('ClearRequestSettings')

Comments:
Clears all of the global common variables used for requests. This is called from the SendHTTPRequest service automatically. The developer does not need to use this service.

Returns:
N/A

Params

The proper use of the generic arguments are defined in the definition of each service above.

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