internal static async Task <ServiceEvent <T> > ExecuteStreamAsync <T>(this Uri uri, KZApplication app, Stream content = null, string method = "GET", bool cache = false, TimeSpan?timeout = null, Dictionary <string, string> headers = null, UseToken useToken = UseToken.Application, Action <long[]> onProgress = null, bool cors = false) where T : Stream
{
Request request = null;
Response response = null;
if (headers == null)
{
headers = new Dictionary <string, string>();
}
try
{
// Does the URL require a no cache?
if (!cache)
{
uri = addNoCache(uri);
headers.Add("Cache-Control", "no-cache");
headers.Add("Pragma", "no-cache");
}
// Adds authentication's header
if (useToken != UseToken.None && app != null && app.Authentication != null && app.Authentication.User != null)
{
addAuthenticationHeader(app, useToken, headers);
}
request = await Request.Create(uri, method.ToUpper(), content, headers, timeout);
response = (method == "POST" || method == "GET" || method == "PUT") ?
await request.Send_POST_GET_PUT(onProgress) :
await request.Send_OTHERS(onProgress);
// Is token expired?
if (response.StatusCode == HttpStatusCode.Unauthorized && app.User != null)
{
// Refresh token if it is expired
var authHeader = response.Headers["WWW-Authenticate"];
if (!string.IsNullOrWhiteSpace(authHeader))
{
var realm = authHeader
.Split(',')
.Where(r => r.StartsWith("error="))
.FirstOrDefault();
if (!string.IsNullOrWhiteSpace(realm))
{
var message = realm.Split('=')[1].Trim();
if (string.Compare(message, "\"Token is expired\"", StringComparison.CurrentCultureIgnoreCase) == 0)
{
// Do refresh tokens
app.Authentication.RemoveFromCache(app.User.Credential.UserName, app.User.Credential.Password, app.User.Provider);
await app.Authentication.Authenticate(app.User.Credential.UserName, app.User.Credential.Password, app.User.Provider);
// Set new auth header
addAuthenticationHeader(app, useToken, request.Headers);
request.Content.Seek(0, SeekOrigin.Begin);
// Send request
response = (method == "POST" || method == "GET" || method == "PUT") ?
await request.Send_POST_GET_PUT(onProgress) :
await request.Send_OTHERS(onProgress);
}
}
}
}
// Process response
var evt = new ServiceEvent <T>();
evt.StatusCode = response.StatusCode;
evt.Headers = response.Headers;
var read = 0L;
var total = response.Body == null ? 0 : response.Body.Length;
// Download the body as stream an send progress information
// Sends initial progress notification
if (onProgress != null)
{
onProgress(new[] { read, total });
}
// Creates the stream that will be returned to the client
var result = new MemoryStream();
if (total > 0)
{
// Copies the response body's stream
var buffer = new byte[4096];
var bytesRead = await response.Body.ReadAsync(buffer, 0, 4096);
while (bytesRead > 0)
{
result.WriteAsync(buffer, 0, bytesRead);
if (onProgress != null)
{
read += bytesRead;
onProgress(new[] { read, total });
}
bytesRead = await response.Body.ReadAsync(buffer, 0, 4096);
}
// Rewinds the stream
result.Seek(0, SeekOrigin.Begin);
}
evt.DataAsStream = (Stream)result;
return(evt);
}
catch (Exception)
{
throw;
}
finally
{
if (request != null)
{
request.Dispose();
}
if (response != null)
{
response.Dispose();
}
}
}
internal static async Task <ServiceEvent <T> > ExecuteAsync <T>(this Uri uri, KZApplication app, Stream content = null, string method = "GET", bool cache = false, TimeSpan?timeout = null, Dictionary <string, string> headers = null, UseToken useToken = UseToken.Application, Action <long[]> onProgress = null, bool cors = false)
{
Request request = null;
Response response = null;
if (headers == null)
{
headers = new Dictionary <string, string>();
}
try
{
// Does the URL require a no cache?
if (!cache)
{
uri = addNoCache(uri);
headers.Add("Cache-Control", "no-cache");
headers.Add("Accept", "*/*");
headers.Add("Pragma", "no-cache");
}
if (timeout != null && timeout.HasValue)
{
headers.Add("timeout", timeout.Value.TotalSeconds.ToString());
}
//**** Passive Auth HotFix ****
if (app != null && app.PassiveAuthenticationInformation != null)
{
headers["Authorization"] = "WRAP access_token=\"" + app.PassiveAuthenticationInformation["access_token"] + "\"";
}
else
{
// Adds authentication's header
if (useToken != UseToken.None && app != null && app.Authentication != null && app.Authentication.User != null)
{
addAuthenticationHeader(app, useToken, headers);
}
}
request = await Request.Create(uri, method.ToUpper(), content, headers, timeout);
response = (method == "POST" || method == "GET" || method == "PUT")?
await request.Send_POST_GET_PUT(onProgress) :
await request.Send_OTHERS(onProgress);
// Is token expired?
if (response.StatusCode == HttpStatusCode.Unauthorized && app.User != null)
{
// Refresh token if it is expired
var authHeader = response.Headers["WWW-Authenticate"];
if (!string.IsNullOrWhiteSpace(authHeader))
{
var realm = authHeader
.Split(',')
.Where(r => r.StartsWith("error="))
.FirstOrDefault();
if (!string.IsNullOrWhiteSpace(realm))
{
var message = realm.Split('=')[1].Trim();
if (string.Compare(message, "\"Token is expired\"", StringComparison.CurrentCultureIgnoreCase) == 0)
{
//**** Passive Auth HotFix ****
if (app.PassiveAuthenticationInformation != null)
{
var newAuthToken = refreshPassiveToken(app.PassiveAuthenticationInformation);
request.Headers["Authorization"] = "WRAP access_token=\"" + newAuthToken + "\"";
request.Content.Seek(0, SeekOrigin.Begin);
// Send request
response = (method == "POST" || method == "GET" || method == "PUT") ?
await request.Send_POST_GET_PUT(onProgress) :
await request.Send_OTHERS(onProgress);
}
else
{
// Do refresh tokens
app.Authentication.RemoveFromCache(app.User.Credential.UserName, app.User.Credential.Password, app.User.Provider);
await app.Authentication.Authenticate(app.User.Credential.UserName, app.User.Credential.Password, app.User.Provider);
// Set new auth header
addAuthenticationHeader(app, useToken, request.Headers);
request.Content.Seek(0, SeekOrigin.Begin);
// Send request
response = (method == "POST" || method == "GET" || method == "PUT") ?
await request.Send_POST_GET_PUT(onProgress) :
await request.Send_OTHERS(onProgress);
}
}
}
}
}
// Process response
var evt = new ServiceEvent <T>();
evt.StatusCode = response.StatusCode;
evt.Headers = response.Headers;
if (typeof(T) == typeof(object))
{
using (var stream = response.Body)
{
using (var reader = new StreamReader(stream, UTF8Encoding.UTF8))
{
var data = await reader.ReadToEndAsync();
evt.DataAsString = data;
}
evt.DataAsStream = response.Body;
}
}
else if (response.Headers.ContainsKey("Content-Type") && response.Headers["Content-Type"].Contains("application/json"))
{
using (var reader = new StreamReader(response.Body, Encoding.UTF8))
{
using (var jsonReader = new JsonTextReader(reader))
{
evt.Data = serializer.Deserialize <T>(jsonReader);
}
}
}
return(evt);
}
catch (Exception e)
{
throw;
}
finally
{
if (request != null)
{
request.Dispose();
}
if (response != null)
{
response.Dispose();
}
}
}
