Xojo Plugin

Send a Staged REST Request from a StringBuilder

Demonstrates Rest.SendReqSb, which sends a request whose text body is read from a StringBuilder, then reads the response in separate steps.

Background. The staged request model separates sending from reading: a SendReq method transmits the request, ReadResponseHeader reads the status line and headers, and a ReadResp method reads the body. This gives fine control over large or streamed messages compared with the single-call full-request methods.

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Xojo Plugin

Dim success As Boolean
success = False

Dim rest As New Chilkat.Rest
Dim bTls As Boolean
bTls = True
Dim bAutoReconnect As Boolean
bAutoReconnect = True
success = rest.Connect("example.com",443,bTls,bAutoReconnect)
If (success = False) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

success = rest.AddHeader("Content-Type","application/json")

//  Send a request whose text body is read from a StringBuilder.
Dim sbBody As New Chilkat.StringBuilder
success = sbBody.Append("{ ""query"": ""chilkat"" }")
success = rest.SendReqSb("POST","/api/search",sbBody)
If (success = False) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

//  After sending, read the response status line and header fields.  The return value is the HTTP
//  status code, or -1 if no response was received.
Dim statusCode As Int32
statusCode = rest.ReadResponseHeader()
If (statusCode < 0) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

System.DebugLog("Response status code: " + Str(statusCode))

//  Read the response body as text.
Dim responseBody As String
responseBody = rest.ReadRespBodyString()
If (rest.LastMethodSuccess = False) Then
    System.DebugLog(rest.LastErrorText)
    Return
End If

System.DebugLog(responseBody)