www request for unity

WWWRequest.cs

using UnityEngine;
using System;
using System.Collections;
using System.Collections.Generic;

/// <summary>
/// Base WWW request component.
/// </summary>
public class WWWRequest : MonoBehaviour {
	
	public enum Status {
		SUCCESS,
		ERROR
	}
	
	[SerializeField]
	string url;
	
	[SerializeField]
	bool autoDestroy;
	
	/// <summary>
	/// Occurs when request complete.
	/// </summary>
	public event Action<WWWRequest> OnComplete;
	
	WWW _www;
	
	IEnumerator Start ()
	{
		if (Application.internetReachability == NetworkReachability.NotReachable) {
			// network error
			if (OnComplete != null) {
				OnComplete (this);
			}
			return true;
		}
		
		_www = new WWW (url);
		// TODO need time out error?
		yield return _www;
		
		// error check
		if (!string.IsNullOrEmpty (_www.error)) {
			status = Status.ERROR;
			if (OnComplete != null) {
				OnComplete (this);
			}
		} else {
			status = Status.SUCCESS;
			if (OnComplete != null) {
				OnComplete (this);
			}
		}
		
		if (autoDestroy) {
			Destroy (gameObject);
		}
	}
	
	void OnDestroy ()
	{
		if (_www != null) {
			if (!IsDone && OnComplete != null) {
				status = Status.ERROR;
				OnComplete (this);
				OnComplete = null;
			}
			_www.Dispose ();
			_www = null;
		}
	}
	
	#region Props
	public WWW www {
		get { return _www;}
	}
	
	public Status status {
		get;
		protected set;
	}

	public bool IsDone {
		get {
			if (_www == null) {
				return false;
			}
			return _www.isDone;
		}
	}

	public float Progress {
		get {
			if (_www == null) {
				return 0f;
			}
			return _www.progress;
		}
	}
	
	/// <summary>
	/// date file created.
	/// in response headers [DAT
	/// </summary>
	/// <value>
	/// datetime.
	/// </value>
	public DateTime Date {
		get {
			if (!IsDone) {
				return DateTime.MinValue;
			}
			return DateTime.Parse (_www.responseHeaders ["DATE"]);
		}
	}
	#endregion
	
	#region Builder
	/// <summary>
	/// Make the request
	/// </summary>
	/// <param name='url'>
	/// URL.
	/// </param>
	public static WWWRequest Make (string url)
	{
		GameObject go = new GameObject ("WWWRequest");
		WWWRequest req = go.AddComponent<WWWRequest> ();
		req.url = url;
		req.autoDestroy = true;
		return req;
	}
	#endregion
}

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