public static async ValueTask <string> Request(HttpMethod Method, string URI, string Parameters = null)
//, string ProxyString
{
System.Net.WebRequest req = System.Net.WebRequest.Create(URI);
//req.Proxy = new System.Net.WebProxy(ProxyString, true);
//Add these, as we're doing a POST
req.ContentType = "application/x-www-form-urlencoded";
req.Method = Method.Method;
if (!string.IsNullOrEmpty(Parameters))
{
using (System.IO.StreamWriter sw = new System.IO.StreamWriter(await req.GetRequestStreamAsync()))
//We need to count how many bytes we're sending. Post'ed Faked Forms should be name=value&
{
//req.ContentLength = sw.Encoding.GetBytes(Parameters).Length;
sw.Write(Parameters); //Push it out there
sw.Flush();
}
}
System.Net.WebResponse resp = await req.GetResponseAsync();
if (resp == null)
{
return(null);
}
using (System.IO.StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream()))
return(sr.ReadToEnd().Trim());
}
internal async System.Threading.Tasks.Task <string> HttpPost(string URI, string Parameters)
{
System.Net.WebRequest req = System.Net.WebRequest.Create(BaseURI + URI);
req.ContentType = "application/json";
req.Method = "POST";
byte[] bytes = System.Text.Encoding.ASCII.GetBytes(Parameters);
//req.ContentLength = bytes.Length;
System.IO.Stream os = await req.GetRequestStreamAsync();
os.Write(bytes, 0, bytes.Length); //Push it out there
os.Dispose();
System.Net.WebResponse resp = await req.GetResponseAsync();
if (resp == null)
{
return(null);
}
System.IO.StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream());
return(sr.ReadToEnd().Trim());
}
protected override async Task FillDataTo(System.Net.WebRequest webrqst, CancellationToken cancellationToken, IProgress <ProgressReport> progress)
{
progress.ReportWhenNotNull(() => ProgressReport
.CreateNew(RequestResponseSteps
.Requesting_N_Uploading, 0, 1));
var qd = System.Text.Encoding.UTF8.GetBytes(JsonClientHelper.GetQueryData(RequestData.PostFieldValues));
webrqst.ContentType = "application/x-www-form-urlencoded";
#if SILVERLIGHT_4 || SILVERLIGHT_5 || DOTNET45
webrqst.ContentLength = qd.Length;
#endif
var rqstStrm = await webrqst.GetRequestStreamAsync().ConfigureAwait(false);
await rqstStrm.WriteAsync(qd, 0, qd.Length).ConfigureAwait(false);
progress.ReportWhenNotNull(() => ProgressReport
.CreateNew(RequestResponseSteps
.Requesting_N_Uploading, 1, 1));
}
/// <summary>
/// 请求微信接口(Async方式增加吞吐量);
/// </summary>
/// <param name="url"></param>
/// <param name="param"></param>
/// <param name="contenttype"></param>
/// <param name="method"></param>
/// <returns></returns>
public async static Task <string> RequestAsync(string url, object param, string contenttype = "application/json;charset=utf-8", string method = "post")
{
string responseString = string.Empty;
System.Net.WebRequest request = System.Net.WebRequest.Create(url);
request.ContentType = contenttype;
request.Method = method;
if (param != null)
{
using (Stream stream = await request.GetRequestStreamAsync())
{
string strJson = JsonConvert.SerializeObject(param);
byte[] bytes = Encoding.UTF8.GetBytes(strJson);
await stream.WriteAsync(bytes, 0, bytes.Length);
}
}
using (var response = (await request.GetResponseAsync()).GetResponseStream())
{
StreamReader reader = new StreamReader(response, Encoding.UTF8);
responseString = reader.ReadToEnd();
}
return(responseString);
}
protected override async Task FillDataTo(System.Net.WebRequest webRequest, CancellationToken cancellationToken, IProgress <ProgressReport> progress)
{
var memStream = new MemoryStream();
// 边界符
var boundary = "---------------" + DateTime.Now.Ticks.ToString("x");
// 边界符
var beginBoundary = Encoding.UTF8.GetBytes("--" + boundary + "\r\n");
//var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
// 最后的结束符
var endBoundary = Encoding.UTF8.GetBytes("--" + boundary + "--\r\n");
// 设置属性
webRequest.ContentType = "multipart/form-data; boundary=" + boundary;
// 写入文件
const string filePartHeader =
"Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n" +
"Content-Type: application/octet-stream\r\n\r\n";
foreach (var fileKvp in RequestData.UploadFiles)
{
var value = fileKvp.Value;
memStream.Write(beginBoundary, 0, beginBoundary.Length);
var header = string.Format(filePartHeader, fileKvp.Key, value.LocalPath);
var headerbytes = Encoding.UTF8.GetBytes(header);
memStream.Write(headerbytes, 0, headerbytes.Length);
var stream = await value.StreamFactory.ConfigureAwait(false);
await stream.CopyToAsync(memStream).ConfigureAwait(false);
// await memStream.WriteAsync(beginBoundary, 0, beginBoundary.Length);
memStream.Write(CRLFBYTES, 0, CRLFBYTES.Length);
}
if (cancellationToken.IsCancellationRequested)
{
cancellationToken.ThrowIfCancellationRequested();
}
// 写入字符串的Key
var stringKeyHeader = "Content-Disposition: form-data; name=\"{0}\"" +
"\r\n\r\n{1}\r\n";
foreach (byte[] formitembytes in (
this.RequestData.PostFieldValues
.SelectMany(kvp => kvp.Value.Select(x => new { kvp.Key, Value = x }))
)
.Select(
keyvp =>
{
return(string.Format(stringKeyHeader, keyvp.Key, keyvp.Value));
}
)
.Select
(
str => Encoding.UTF8.GetBytes(str)
))
{
memStream.Write(beginBoundary, 0, beginBoundary.Length);
memStream.Write(formitembytes, 0, formitembytes.Length);
}
// 写入最后的结束边界符
memStream.Write(endBoundary, 0, endBoundary.Length);
#if SILVERLIGHT_4 || SILVERLIGHT_5 || DOTNET45
webRequest.ContentLength = memStream.Length;
#endif
if (cancellationToken.IsCancellationRequested)
{
cancellationToken.ThrowIfCancellationRequested();
}
var requestStream = await webRequest.GetRequestStreamAsync().ConfigureAwait(false);
memStream.Position = 0;
//await memStream.CopyToAsync(requestStream, 512 * 1024, cancellationToken);
var total = memStream.Length;
var current = 0;
var buffer = new byte[4096];
var sourceStream = memStream;
var eof = false;
while (!eof)
{
progress.ReportWhenNotNull(() => ProgressReport.CreateNew(RequestResponseSteps.Requesting_N_Uploading, current, total));
cancellationToken.ThrowIfCancellationRequested();
var readCount = await sourceStream.ReadAsync(buffer, 0, buffer.Length).ConfigureAwait(false);
current = current + readCount;
eof = (readCount == 0);
if (!eof)
{
requestStream.Write(buffer, 0, readCount);
}
}
//requestStream.Close();
}