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(Classic ASP) HMRC Validate Fraud Prevention HeadersDemonstrates how to test (validate) HMRC fraud prevention headers.
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> <% ' This example requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Rest") set rest = Server.CreateObject("Chilkat.Rest") success = rest.Connect("test-api.service.hmrc.gov.uk",443,1,1) If (success = 0) Then Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>" Response.End End If ' Load the previously fetched access token. ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.JsonObject") set json = Server.CreateObject("Chilkat.JsonObject") success = json.LoadFile("qa_data/tokens/hmrc.json") accessToken = json.StringOf("access_token") Response.Write "<pre>" & Server.HTMLEncode( "Using access toke: " & accessToken) & "</pre>" ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.StringBuilder") set sbAuthHeaderValue = Server.CreateObject("Chilkat.StringBuilder") success = sbAuthHeaderValue.Append("Bearer ") success = sbAuthHeaderValue.Append(accessToken) success = rest.AddHeader("Accept","application/vnd.hmrc.1.0+json") success = rest.AddHeader("Authorization",sbAuthHeaderValue.GetAsString()) ' Add the fraud prevention headers. ' See https://developer.service.hmrc.gov.uk/api-documentation/docs/fraud-prevention success = rest.AddHeader("gov-client-connection-method","DESKTOP_APP_DIRECT") ' This should be generated by an application and persistently stored on the device. The identifier should not expire. success = rest.AddHeader("gov-client-device-id","beec798b-b366-47fa-b1f8-92cede14a1ce") ' See https://developer.service.hmrc.gov.uk/api-documentation/docs/fraud-prevention success = rest.AddHeader("gov-client-user-ids","os=user123") ' Your local IP addresses (comma separated), such as addresses beginning with "192.168." or "172.16." success = rest.AddHeader("gov-client-local-ips","172.16.16.23") ' You'll need to find a way to get your MAC address. Chilkat does not yet provide this ability... success = rest.AddHeader("gov-client-mac-addresses","7C%3AD3%3A0A%3A25%3ADA%3A1C") success = rest.AddHeader("gov-client-timezone","UTC+00:00") ' You can probably just hard-code these so they're always the same with each request. success = rest.AddHeader("gov-client-window-size","width=1256&height=800") success = rest.AddHeader("gov-client-screens","width=1920&height=1080&scaling-factor=1&colour-depth=16") success = rest.AddHeader("gov-client-user-agent","Windows/Server%202012 (Dell%20Inc./OptiPlex%20980)") success = rest.AddHeader("gov-vendor-version","My%20Desktop%20Software=1.2.3.build4286") responseStr = rest.FullRequestNoBody("GET","/test/fraud-prevention-headers/validate") If (rest.LastMethodSuccess = 0) Then Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>" Response.End End If ' If the status code is 200, then the fraud prevention headers were validated. ' The JSON response may include some warnings.. Response.Write "<pre>" & Server.HTMLEncode( "Response status code = " & rest.ResponseStatusCode) & "</pre>" Response.Write "<pre>" & Server.HTMLEncode( "Response JSON body: ") & "</pre>" Response.Write "<pre>" & Server.HTMLEncode( responseStr) & "</pre>" %> </body> </html> |
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