/*
http://stebet.net/httpclient-best-practices/
http://tiku.io/questions/173712/make-https-call-using-httpclient
http://www.dotnetcurry.com/showarticle.aspx?ID=1029
*/
public async Task<string> Translate ()
{
string url = string.Format
(
uri_google_translate
, Uri.EscapeUriString (text_to_translate)
, culture_to_translate
, culture_translated
);
// Create a Language mapping
var languageMap = new Dictionary<string, string> ();
InitLanguageMap (languageMap);
// Create an instance of WebClient in order to make the language translation
//Uri address = new Uri(uri_google_translate);
string address =
//@"http://holisticware.net/holisticware"
@"http://google.com"
;
using (var client = new HttpClient ())
{
try
{
var handler = new HttpClientHandler();
/*
Problem:
System.MissingMethodException: Method not found: 'System.Net.Http.HttpClientHandler.set_AutomaticDecompression'.
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1[System.String].Start[<Translate>c__async0] (HolisticWare.Core.Localization.Translate.<Translate>c__async0& stateMachine) [0x0001b]
in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Runtime.CompilerServices/AsyncTaskMethodBuilder_T.cs:107
at HolisticWare.Core.Localization.Translate.GoogleTranslatePrimitive.Translate () [0x00000]
in <filename unknown>:0
at HolisticWare.BabelFish.MainPage+<buttonTranslate_Clicked>c__async0.MoveNext () [0x0002d]
in /Users/moljac/Projects/HolisticWare/HolisticWare.BabelFish/HolisticWare.BabelFish/HolisticWare.BabelFish/MainPage.xaml.cs:23
Solution:
add the portable HTTP client to BOTH your portable class library AND any app that consumes that assembly
*/
if (handler.SupportsAutomaticDecompression)
{
handler.AutomaticDecompression =
System.Net.DecompressionMethods.GZip
|
System.Net.DecompressionMethods.Deflate
;
}
var httpClient = new HttpClient (handler);
client.DefaultRequestHeaders.TryAddWithoutValidation("Accept", "text/html,application/xhtml+xml,application/xml");
client.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Encoding", "gzip, deflate");
client.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent", "Mozilla/5.0");
client.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Charset", "ISO-8859-1");
string string_response = "";
/*
The code will not decompress
var response_get_wit_uri = await client.GetAsync(new Uri (address));
response_get_wit_uri.EnsureSuccessStatusCode ();
string_response = await response_get_wit_uri.Content.ReadAsStringAsync ();
*/
// http://blogs.msdn.com/b/dotnet/archive/2013/06/06/portable-compression-and-httpclient-working-together.aspx
var result = await client.GetStringAsync(url);
// convert string to stream
byte[] byteArray = Encoding.UTF8.GetBytes(result);
//GZipStream bigStream = new GZipStream(new System.IO.MemoryStream(byteArray), CompressionMode.Decompress);
System.IO.MemoryStream bigStreamOut = new System.IO.MemoryStream();
//bigStream.CopyTo(bigStreamOut);
string s = bigStreamOut.ToString();
var response_get_wit_string = await client.GetAsync(address);
response_get_wit_string.EnsureSuccessStatusCode ();
string_response = await response_get_wit_string.Content.ReadAsStringAsync ();
}
catch (System.ArgumentException exc)
{
/*
Problem:
System.ArgumentException: Encoding name 'ISO-8859-2' not supported Parameter name: name
at System.Text.Encoding.GetEncoding (System.String name) [0x002f6]
in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Text/Encoding.cs:661
at System.Net.Http.HttpContent+<ReadAsStringAsync>c__async4.MoveNext () [0x0010e]
in ///Library/Frameworks/Xamarin.iOS.framework/Versions/8.6.0.51/src/mono/mcs/class/System.Net.Http/System.Net.Http/HttpContent.cs:176
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000b]
in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Runtime.ExceptionServices/ExceptionDispatchInfo.cs:62
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1+ConfiguredTaskAwaiter[System.String].GetResult ()
[0x00034] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Runtime.CompilerServices/ConfiguredTaskAwaitable_T.cs:62
at System.Net.Http.HttpClient+<GetStringAsync>c__async5.MoveNext () [0x000a9]
in ///Library/Frameworks/Xamarin.iOS.framework/Versions/8.6.0.51/src/mono/mcs/class/System.Net.Http/System.Net.Http/HttpClient.cs:322
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000b]
in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Runtime.ExceptionServices/ExceptionDispatchInfo.cs:62
at System.Runtime.CompilerServices.TaskAwaiter`1[System.String].GetResult () [0x00034]
in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Runtime.CompilerServices/TaskAwaiter_T.cs:59
at HolisticWare.Core.Localization.Translate.GoogleTranslatePrimitive+<Translate>c__async0.MoveNext () [0x0010e]
in /Users/moljac/Projects/HolisticWare/HolisticWare.BabelFish/HolisticWare.Core.Localization.Translate/GoogleTranslatePrimitive.cs:116 }
System.ArgumentException
Related:
http://blogs.msdn.com/b/dotnet/archive/2013/11/08/10435031.aspx?PageIndex=3
Solution:
client.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent", "Mozilla/5.0");
*/
}
catch (System.Net.Http.HttpRequestException exc)
{
/*
System.Net.Http.HttpRequestException: 403 (Forbidden: Access is denied.)
at System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode () [0x0000d]
in ///Library/Frameworks/Xamarin.iOS.framework/Versions/8.6.0.51/src/mono/mcs/class/System.Net.Http/System.Net.Http/HttpResponseMessage.cs:122
at HolisticWare.Core.Localization.Translate.GoogleTranslatePrimitive+<Translate>c__async0.MoveNext () [0x0013a]
in /Users/moljac/Projects/HolisticWare/HolisticWare.BabelFish/HolisticWare.Core.Localization.Translate/GoogleTranslatePrimitive.cs:125 }
System.Net.Http.HttpRequestException
*/
string msg = "";
}
catch (System.Exception exc)
{
string msg = "";
System.Diagnostics.Debug.WriteLine(msg);
}
}
/*
Proxy for debugging
Fiddler, Charles
for visual studio
C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\devenv.exe.config
<system.net>
<defaultProxy useDefaultCredentials="true" enabled="true">
<proxy autoDetect="false" bypassonlocal="false" proxyaddress="http://127.0.0.1:8888" usesystemdefault="false" />
</defaultProxy>
</system.net>
foa all apps
Open machine.config in the folder C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config. Note that if you are debugging a 64bit service (like ASP.NET) you will want to look in the Framework64 folder instead of the Framework folder. Similarly, if you are using a .NET version prior to 4.0, you will need to adjust the version part of the path.
Add the following XML block as a peer to the existing system.net element, replacing any existing defaultProxy element if present:
<!-- The following section is to force use of Fiddler for all applications, including those running in service accounts -->
<system.net>
<defaultProxy
enabled = "true"
useDefaultCredentials = "true">
<proxy autoDetect="false" bypassonlocal="false" proxyaddress="http://127.0.0.1:8888" usesystemdefault="false" />
</defaultProxy>
</system.net>
*/
return text_translated;
}
/// <summary>
/// ����������ֻ�õ�cookie�� ���л�
/// </summary>
/// <param name="obj">����</param>
/// <returns></returns>
public static string SerializeObject(object obj)
{
System.Runtime.Serialization.IFormatter bf = new BinaryFormatter();
string result = string.Empty;
using (System.IO.MemoryStream ms = new System.IO.MemoryStream())
{
bf.Serialize(ms, obj);
byte[] byt = Encoding.UTF8.GetBytes(ms.ToString());//new byte[ms.length];Ҳ��
byt = ms.ToArray();
result = System.Convert.ToBase64String(byt);
ms.Flush();
}
return result;
}
