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AsyncHTTPClient.cs
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// Unity C# reference source
// Copyright (c) Unity Technologies. For terms of use, see
// https://unity3d.com/legal/licenses/Unity_Reference_Only_License
using System;
using System.Net;
using System.IO;
using System.Text;
using System.Threading;
using System.Collections.Generic;
using UnityEngine;
using System.Linq;
namespace UnityEditor
{
/*
* A HTTP job for performing HTTP requests in a thread
* This class is primarily used by the Server class.
*/
internal partial class AsyncHTTPClient
{
internal enum State
{
INIT,
CONNECTING,
CONNECTED,
UPLOADING,
DOWNLOADING,
CONFIRMING,
DONE_OK,
DONE_FAILED,
ABORTED,
TIMEOUT
}
private IntPtr m_Handle;
public delegate void DoneCallback(AsyncHTTPClient client);
public delegate void StatusCallback(State status, int bytesDone, int bytesTotal);
public StatusCallback statusCallback;
public DoneCallback doneCallback;
string m_ToUrl;
string m_FromData;
string m_Method;
public string url
{
get { return m_ToUrl; }
}
public string text
{
get
{
System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();
byte[] b = bytes;
if (b == null) return null;
return encoding.GetString(b);
}
}
public byte[] bytes
{
get
{
return GetBytesByHandle(m_Handle);
}
}
public Texture2D texture
{
get
{
return GetTextureByHandle(m_Handle);
}
}
public State state { get; private set; }
public int responseCode { get; private set; }
public string tag { get; set; }
public Dictionary<string, string> header;
/* GET request
*
*/
public AsyncHTTPClient(string _toUrl)
{
m_ToUrl = _toUrl;
m_FromData = null;
m_Method = "";
state = State.INIT;
header = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
m_Handle = (IntPtr)0;
tag = "";
statusCallback = null;
}
/* Any method request
*
*/
public AsyncHTTPClient(string _toUrl, string _method)
{
m_ToUrl = _toUrl;
m_FromData = null;
m_Method = _method;
state = State.INIT;
header = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
m_Handle = (IntPtr)0;
tag = "";
statusCallback = null;
}
/* If this job has been set as a POST job this will overwrite the
* data to be posted. The job must not have been started yet
* ie. Begin() should not have been called.
*/
public string postData
{
set
{
m_FromData = value;
if (m_Method == "")
m_Method = "POST";
if (!header.ContainsKey("Content-Type"))
header["Content-Type"] = "application/x-www-form-urlencoded";
}
}
/*
* POST request for uploading url application/x-www-form-urlencoded dictionary.
* The encoding normally allows for duplicate keys, but this method is restricted
* to unique keys.
*/
public Dictionary<string, string> postDictionary
{
set
{
postData = string.Join("&", value.Select(kv => EscapeLong(kv.Key) + "=" + EscapeLong(kv.Value)).ToArray());
}
}
/*
*
*/
public void Abort()
{
state = State.ABORTED;
AbortByHandle(m_Handle);
}
public bool IsAborted()
{
return state == State.ABORTED;
}
public bool IsDone()
{
return IsDone(state);
}
public static bool IsDone(State state)
{
switch (state)
{
case State.DONE_OK:
case State.DONE_FAILED:
case State.ABORTED:
case State.TIMEOUT:
return true;
default: return false;
}
}
public bool IsSuccess()
{
return state == State.DONE_OK;
}
public static bool IsSuccess(State state)
{
return state == State.DONE_OK;
}
public void Begin()
{
if (IsAborted())
{
state = State.ABORTED;
return;
}
if (m_Method == "")
m_Method = "GET";
string[] headerFlattened = header.Select(kv => string.Format("{0}: {1}", kv.Key, kv.Value)).ToArray();
m_Handle = SubmitClientRequest(tag, m_ToUrl, headerFlattened, m_Method, m_FromData, Done, Progress);
}
private void Done(State status, int i_ResponseCode)
{
state = status;
responseCode = i_ResponseCode;
if (doneCallback != null)
doneCallback(this);
m_Handle = (IntPtr)0; // The CurlRequestMessage will be deallocated after this callback returns
}
private void Progress(State status, int bytesDone, int bytesTotal)
{
state = status;
if (statusCallback != null)
statusCallback(status, bytesDone, bytesTotal);
}
/*
* The normal escape function does not support strings longer than 32766 characters
*/
private string EscapeLong(string v)
{
StringBuilder q = new StringBuilder();
const int c_ChunkLength = 32766;
for (int i = 0; i < v.Length; i += c_ChunkLength)
{
q.Append(System.Uri.EscapeDataString(v.Substring(i, v.Length - i > c_ChunkLength ? c_ChunkLength : v.Length - i)));
}
return q.ToString();
}
}
}