(Xojo Plugin) curl POST with JSON Input and JSON Output

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Note: This example requires Chilkat v11.5.0 or greater.

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Dim success As Boolean
success = False

// Run the following curl command

//  curl -X POST https://httpbin.org/post \
//       -H "Content-Type: application/json" \
//       -d '{
//             "title": "foo",
//             "body": "bar",
//             "userId": 1
//           }'

// The backslashes at the end of lines are not required.  Chilkat ignores them if present.
Dim sbTargetCurl As New Chilkat.StringBuilder
success = sbTargetCurl.AppendLn(" curl -X POST https://httpbin.org/post \")
success = sbTargetCurl.AppendLn("      -H ""Content-Type: application/json"" \")
success = sbTargetCurl.AppendLn("      -d '{")
success = sbTargetCurl.AppendLn("            ""title"": ""foo"",")
success = sbTargetCurl.AppendLn("            ""body"": ""bar"",")
success = sbTargetCurl.AppendLn("            ""userId"": 1")
success = sbTargetCurl.AppendLn("          }'")

Dim httpCurl As New Chilkat.HttpCurl

// Run the curl command.
success = httpCurl.DoYourThing(sbTargetCurl.GetAsString())
If (success = False) Then
    System.DebugLog(httpCurl.LastErrorText)
    Return
End If

Dim responseJson As New Chilkat.JsonObject
responseJson.EmitCompact = False

success = httpCurl.GetResponseJson(responseJson)

Dim statusCode As Int32
statusCode = httpCurl.StatusCode
System.DebugLog("response status code: " + Str(statusCode))

System.DebugLog(responseJson.Emit())

// Output:

// response status code: 200
// {
//   "args": {},
//   "data": "{\r\n            \"title\": \"foo\",\r\n            \"body\": \"bar\",\r\n            \"userId\": 1\r\n          }",
//   "files": {},
//   "form": {},
//   "headers": {
//     "Content-Length": "96",
//     "Content-Type": "application/json",
//     "Host": "httpbin.org",
//     "X-Amzn-Trace-Id": "Root=1-69e8db8b-459b3bdf7b7a3bc749184968"
//   },
//   "json": {
//     "body": "bar",
//     "title": "foo",
//     "userId": 1
//   },
//   "origin": "123.222.222.222",
//   "url": "https://httpbin.org/post"
// }

// ----------------------------------------------------------------------------------
// Another example:

// curl -X POST https://postman-echo.com/post \
//      -H "Content-Type: application/json" \
//      -d '{"foo":"bar"}'

Dim targetCurl As String
targetCurl = "curl -X POST https://postman-echo.com/post -H ""Content-Type: application/json"" -d '{""foo"":""bar""}'"

// Run the curl command.
success = httpCurl.DoYourThing(targetCurl)
If (success = False) Then
    System.DebugLog(httpCurl.LastErrorText)
    Return
End If

success = httpCurl.GetResponseJson(responseJson)

statusCode = httpCurl.StatusCode
System.DebugLog("response status code: " + Str(statusCode))

System.DebugLog(responseJson.Emit())

// Output:

// response status code: 200
// {
//   "args": {},
//   "data": {
//     "foo": "bar"
//   },
//   "files": {},
//   "form": {},
//   "headers": {
//     "host": "postman-echo.com",
//     "content-length": "13",
//     "content-type": "application/json",
//     "x-forwarded-proto": "https",
//     "accept-encoding": "gzip, br"
//   },
//   "json": {
//     "foo": "bar"
//   },
//   "url": "https://postman-echo.com/post"
// }