making http xmlcommand to an API

Question

Hi Forum

I'm trying to start making an ap that contains 3 - 6 buttons called

Environment1 to Environment6.

I have been reading and reading on how to do this, with xcode/swift, but i think i'm stucked.

I have a Controller API that listens to xml commands on its port http://ServIP:8000/xmlcommand/

A typical http post command will look like this: e.g issued either on a command line or via postman.

http://ServIP:8000/xmlcommand/

XML Command:

<name>environments/Environment1.hwe</name>

<id>Environment1</id>

</command>

</Commands>

Anyone have an example they could share how to create a button that actually send this XMLcode to the API when pushed?

Thank you in advance.

/Michael

Network

634

Posted by

Enevold

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Answer 1

Hi!

I think there are enough examples out there on how to connect a button to some method in your controller. And for executing the network request the following should lead you into the right direction:

let session = URLSession(configuration: .default)
let url = URL(string: "<destination url>")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.httpBody = "<xml>…</xml>".data(using: .utf8)
let task = session.dataTask(with: request) { data, response, error in
    // do something with the result
}
task.resume() // <- otherwise your network request won't be started

Regards

Christian

Posted by

cmittendorf

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Answer 2

.

Posted by

john daniel

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Answer 3

Sorry Michael,

I had a nice reply but I'm not going to wait two weeks for moderation because I accidentally used the Apple Developer obscentity "h**p://"

Posted by

john daniel

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Answer 4

Hi!

I think there are enough examples out there on how to connect a button to some method in your controller. And for executing the network request the following should lead you into the right direction:

let session = URLSession(configuration: .default)
let url = URL(string: "<destination url>")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.httpBody = "<xml>…</xml>".data(using: .utf8)
let task = session.dataTask(with: request) { data, response, error in
    // do something with the result
}
task.resume() // <- otherwise your network request won't be started

Regards

Christian

Posted by

cmittendorf

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Answer 5

Hi Forums

I have been trying to work with this snippet but seems like I can't get it just right. I have added an explain as I can't post an image of what I'm trying to achieve here below.

import UIKit
import SwiftUI

let session = URLSession(configuration: .default)
let url = URL(string: "http........://192.168.0.196:8000/xmlcommand")
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.httpBody = "<?xml version=\"1.0\"encoding=\"UTF-8\"?><Commands><command> type=\"open\"><name>environments/Animals.hwe</name><id>a1</id></command></Commands>".data(using: .utf8)
let task = session.dataTask(with: request) { data, response, error in
// do something with the result
}
task.resume() // <- otherwise your network request won't be started

With Rested App on Mac I can make the "POST" work fine with these settings:

http. ..... ://192.168.0.196:8000/xmlcommand ........................ POST

Use Custome HTTP body - HTTPBody:

<?xml version="1.0" encoding="UTF-8"?>
<Commands>
<command type="open">
<name>environments/Animals.hwe</name>
<id>a1</id>
</command>
</Commands>

Result from Rested application that works with the XML code...

POST /xmlcommand
Response time: 24 ms

Request Headers & Body

Accept: */*
Accept-Encoding: gzip, deflate
Content-Type: text/plain
Accept-Language: en-us

<?xml version="1.0" encoding="UTF-8"?>
<Commands>
<command type="open">
<name>environments/Animals.hwe</name>
<id>a1</id>
</command>
</Commands>

Response Headers

HTTP/1.1 200 OK
Date: Tue, 27 Oct 2020 18:03:53 GMT
Cache-Control: no-cache
Transfer-Encoding: Identity

Not sure what goes wrong in my code but seems like the XML code does not reach the api correctly.

Any ideas would be greatly appreciated.

Thanks
Michael

Posted by

Enevold

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making http xmlcommand to an API

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