public static async Task <string> sendDataToServer(string aUrl, string json)
{
string result = "";
var httpClient = new HttpClient();
// Always catch network exceptions for async methods
try
{
httpClient = new Windows.Web.Http.HttpClient();
Windows.Web.Http.HttpRequestMessage msg = new Windows.Web.Http.HttpRequestMessage(new Windows.Web.Http.HttpMethod("POST"), new Uri(aUrl));
msg.Content = new HttpStringContent((json));
msg.Content.Headers.ContentType = new HttpMediaTypeHeaderValue("application/json");
var response = await httpClient.SendRequestAsync(msg).AsTask();
var statusCode = response.StatusCode;
if (statusCode == HttpStatusCode.Ok)
{
result = await response.Content.ReadAsStringAsync();
}
}
catch
{
// Details in ex.Message and ex.HResult.
}
// Once your app is done using the HttpClient object call dispose to
// free up system resources (the underlying socket and memory used for the object)
httpClient.Dispose();
return(result);
}
protected override void Dispose(bool disposing)
{
if (disposing && !_disposed)
{
_client.Dispose();
_disposed = true;
}
base.Dispose(disposing);
}
public async Task <SystemNetHttpRequestResult> SendRequestAsync(string url, HttpMethod method, string contentType, string requestBody, byte[] requestBytes, Dictionary <string, string> headers, NetworkCredential credentials)
{
var filter = new HttpBaseProtocolFilter
{
AutomaticDecompression = true,
AllowAutoRedirect = true,
AllowUI = false
};
if (filter.IgnorableServerCertificateErrors != null)
{
filter.IgnorableServerCertificateErrors.Add(ChainValidationResult.Untrusted);
filter.IgnorableServerCertificateErrors.Add(ChainValidationResult.InvalidName);
}
// use this to make sure we don't have weird behavior where the app caches credentials for way too long
// the real fix seems to be using a new API introduced in 14295 but that's not the version that is targeted today
// see: http://stackoverflow.com/questions/30731424/how-to-stop-credential-caching-on-windows-web-http-httpclient
filter.CookieUsageBehavior = HttpCookieUsageBehavior.NoCookies;
if (credentials != null)
{
filter.ServerCredential = new PasswordCredential("2Day", credentials.UserName, credentials.Password);
}
else
{
filter.ServerCredential = null;
}
var client = new HttpClient(filter);
if (headers != null)
{
foreach (var header in headers)
{
client.DefaultRequestHeaders.Add(header.Key, header.Value);
}
}
var request = new Windows.Web.Http.HttpRequestMessage(method.ToWindowsHttp(), SafeUri.Get(url));
HttpRequestMessage systemNetRequest = request.ToSystemHttp();
if (requestBody != null)
{
if (method != HttpMethod.Post)
{
throw new NotSupportedException("Request body must use POST method");
}
var arrayContent = new HttpBufferContent(requestBytes.AsBuffer());
if (!string.IsNullOrWhiteSpace(contentType))
{
arrayContent.Headers.ContentType = new HttpMediaTypeHeaderValue(contentType);
}
if (method == HttpMethod.Post)
{
request.Content = arrayContent;
}
}
WebRequestBuilder.TraceRequest(systemNetRequest, requestBody);
CancellationTokenSource timeoutCancellationToken = new CancellationTokenSource(TimeSpan.FromSeconds(30));
Windows.Web.Http.HttpResponseMessage response = await client.SendRequestAsync(request).AsTask(timeoutCancellationToken.Token);
client.Dispose();
HttpResponseMessage systemNetResponse = await response.ToWindowsHttp(systemNetRequest);
return(new SystemNetHttpRequestResult
{
Request = systemNetRequest,
Response = systemNetResponse
});
}
public void Dispose()
{
_httpClient?.Dispose();
}
//prepared private
public static async Task <string> CookiedGetUrl(string url, string referrer)
{
HttpResponseMessage response = null;
try
{
HttpRequestMessage req = new HttpRequestMessage(HttpMethod.Get, new Uri(url));
req.Headers.Referer = new Uri(referrer);
response = await client.SendRequestAsync(req);
req.Dispose();
}
catch (COMException e)
{
if ((uint)e.HResult == 0x80072f76)
{
await ShowMessageDialog("可能是被验证码阻挡。",
"错误代码：" + String.Format("{0:x8}", e.HResult) + "\n错误类型：" + e.GetType() + "\n错误信息：" +
e.Message + "\n"
+ "如果是验证码问题，请不要立即点确定。请先打开浏览器，输入验证码。");
await ShowMessageDialog("提示", "如果已经输入验证码，可以确认继续；\n如果发现Cookie已失效，继续并稍后以重新设置Cookie");
}
try
{
HttpRequestMessage req = new HttpRequestMessage(HttpMethod.Get, new Uri(url));
req.Headers.Referer = new Uri(referrer);
response = await client.SendRequestAsync(req);
req.Dispose();
}
catch (COMException e2)
{
if ((uint)e2.HResult == 0x80072f76)
{
await ShowMessageDialog("错误未解决。",
"错误类型：" + e2.GetType() + "\n错误信息：" + e2.Message + "\n持续网络故障。为避免故障扩大，程序将结束。可检查网络/jingyan.baidu.com，稍后再启动。");
Application.Current.Exit();
}
if ((uint)e2.HResult == 0x80072efd)
{
await ShowMessageDialog("错误未解决。80072efd，系统网络故障",
"错误类型：" + e2.GetType() + "\n错误信息：" + e2.Message + "\n请百度80072efd寻找解决办法。该故障和系统网络设置有关。可能是被国产安全软件乱优化造成。\n持续网络故障。为避免故障扩大，程序将结束。可检查网络，稍后再启动。");
Application.Current.Exit();
}
client.Dispose();
await ShowMessageDialog("未知故障。可能是网络问题", "错误类型：" + e2.GetType() + "\n错误信息：" + e2.Message);
throw new COMException(e2.Message);
}
}
if (response == null)
{
return("RESPONSE NULL");
}
if (response.StatusCode != HttpStatusCode.Ok)
{
return(response.StatusCode.ToString());
}
IHttpContent icont = response.Content;
IInputStream istream = await icont.ReadAsInputStreamAsync();
StreamReader reader = new StreamReader(istream.AsStreamForRead(), Encoding.UTF8);
string content = reader.ReadToEnd();
reader.Dispose();
istream.Dispose();
icont.Dispose();
response.Dispose();
return(content);
}
protected async void postRequest()
{
string jsonInput = JsonConvert.SerializeObject(input);
LogManager.WriteLine("jsonInput: " + jsonInput);
HttpResponseMessage responseMessage = new HttpResponseMessage();
CancellationTokenSource postTimeout = new CancellationTokenSource(); // 50 seconds
postTimeout.CancelAfter(RestConfig.SOCKET_TIMEOUT_MS);
CancellationTokenSource readTimeout = new CancellationTokenSource(); // 2 seconds
readTimeout.CancelAfter(RestConfig.CONNECTION_TIMEOUT_MS);
// POST REQUEST
string GamificationLoginEndpoint = AppSettingsManager.GetAppSettings().engineServerEndPoint + GamificationLogin;
LogManager.WriteLine("Gamification Login EndPoint: " + GamificationLoginEndpoint);
Uri gamificationServerUri = new Uri(GamificationLoginEndpoint);
HttpClient client = GetConfiguredHttpClient();
Encoding latinISO = Encoding.GetEncoding(RestConfig.OUTPUT_STREAM_CHARSET);
byte[] messageArray = latinISO.GetBytes(jsonInput);
MemoryStream ms = new MemoryStream(messageArray);
IInputStream inStream = ms.AsInputStream();
var request = new Windows.Web.Http.HttpRequestMessage(Windows.Web.Http.HttpMethod.Post, gamificationServerUri);
request.Content = new HttpStreamContent(inStream);
((HttpStreamContent)request.Content).Headers.ContentType = new HttpMediaTypeHeaderValue("application/json");
LogManager.WriteLine("Request: " + request);
try
{
responseMessage = await client.PostAsync(request.RequestUri, request.Content).AsTask(postTimeout.Token);
// READ RESPONSE
try
{
IInputStream responseStream = await responseMessage.Content.ReadAsInputStreamAsync().AsTask(readTimeout.Token);
string responseContent;
using (Stream receiveStream = responseStream.AsStreamForRead())
{
Encoding utf8 = Encoding.GetEncoding(RestConfig.INPUT_STREAM_CHARSET);
using (StreamReader readStream = new StreamReader(receiveStream, utf8))
{
responseContent = readStream.ReadToEnd();
}
}
string response = responseContent;
LogManager.WriteLine("response: " + response);
handleResponse(response);
}
catch (Exception e)
{
WebErrorStatus status = WebError.GetStatus(e.HResult);
LogManager.WriteLine("Exception on Read Request: " + e);
handleResponse(e.Message);
}
}
catch (Exception e)
{
WebErrorStatus status = WebError.GetStatus(e.HResult);
LogManager.WriteLine("Error: " + status);
LogManager.WriteLine("Exception on Post Request: " + e);
handleResponse(e.Message);
}
// Once your app is done using the HttpClient object, we call 'Dispose' to
// free up system resources (the underlying socket and memory used for the object)
client.Dispose();
}