C# HTTP API calls from inside Unity

Had to fiddle about a bit to work out how to POST an JSON API with Unity via C#, this example sends raw JSON with the application/json header which Rails will then decode it and turn it into ‘params’.

using UnityEngine;
using System.Collections;

public class ThingAPI : MonoBehaviour {
	// Use this for initialization
	IEnumerator Start () {
		// GET
                var url = "http://localhost:3000/api/posts/1";
		WWW www = new WWW(url);
		yield return www;

                // POST
		url = "http://localhost:3000/api/posts";
		var jsonString = "{\"post\":[{\"title": "Something to post about\": 1, \"body\": \"and maybe someone will listen to my cries.\"}]}";
		
		var encoding = new System.Text.UTF8Encoding();
		var postHeader = new Hashtable();
		
		postHeader.Add("Content-Type", "application/json");
		postHeader.Add("Content-Length", jsonString.Length);

		www = new WWW(url, encoding.GetBytes(jsonString), postHeader);
		yield return www;
	}
}