Swift Requires Chilkat v11.5.0+

curl POST with JSON Input and JSON Output

See more CURL Examples

Demonstrates running a simple curl command with JSON input and JSON output. Swift

func chilkatTest() {
    var success: Bool = 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.
    let sbTargetCurl = CkoStringBuilder()!
    sbTargetCurl.appendLn(str: " curl -X POST https://httpbin.org/post \\")
    sbTargetCurl.appendLn(str: "      -H \"Content-Type: application/json\" \\")
    sbTargetCurl.appendLn(str: "      -d '{")
    sbTargetCurl.appendLn(str: "            \"title\": \"foo\",")
    sbTargetCurl.appendLn(str: "            \"body\": \"bar\",")
    sbTargetCurl.appendLn(str: "            \"userId\": 1")
    sbTargetCurl.appendLn(str: "          }'")

    let httpCurl = CkoHttpCurl()!

    //  Run the curl command.
    success = httpCurl.doYourThing(targetCurl: sbTargetCurl.getAsString())
    if success == false {
        print("\(httpCurl.lastErrorText!)")
        return
    }

    let responseJson = CkoJsonObject()!
    responseJson.emitCompact = false

    httpCurl.getResponseJson(json: responseJson)

    var statusCode: Int = httpCurl.statusCode.intValue
    print("response status code: \(statusCode)")

    print("\(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"}'

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

    //  Run the curl command.
    success = httpCurl.doYourThing(targetCurl: targetCurl)
    if success == false {
        print("\(httpCurl.lastErrorText!)")
        return
    }

    httpCurl.getResponseJson(json: responseJson)

    statusCode = httpCurl.statusCode.intValue
    print("response status code: \(statusCode)")

    print("\(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"
    //  }

}