/// <summary>
/// 从指定的地址获取包装为JSON对象的响应结果。
/// </summary>
/// <param name="url"></param>
/// <param name="method"></param>
/// <param name="data"></param>
/// <returns></returns>
private static async Task <IResult> Execute(string url, string method, IDictionary <string, object> data = null)
{
var uri = NormalUri(url);
method = Commons.NotBlank(method, "method").Trim().ToUpper();
using (var client = new HttpWebClient(m_cookieContainer)) {
try {
client.Headers.Set("Accept", "application/json");
Log.DebugFormat("sending data to: {0}", uri);
m_status = HttpStatus.Sending;
client.UploadProgressChanged += client_UploadProgressChanged;
client.UploadValuesCompleted += client_UploadValuesCompleted;
client.DownloadProgressChanged += client_DownloadProgressChanged;
client.DownloadDataCompleted += client_DownloadDataCompleted;
var content = Encoding.UTF8.GetString(
await client.UploadValuesTaskAsync(uri, method, ToNameValueCollection(data)));
Log.DebugFormat("received data: {0}", content);
return(ToResult(content));
} catch (WebException ex) {
return(new JsonResult(new RpcException(ex.Response, ex)));
} finally {
m_status = HttpStatus.Ready;
m_progress = 0;
}
}
}
/// <summary>
/// 从指定的地址获取包装为JSON对象的响应结果。
/// </summary>
/// <param name="url"></param>
/// <param name="data"></param>
/// <returns></returns>
public static async Task <IResult> Get(string url, IDictionary <string, object> data = null)
{
var uri = NormalUri(url);
using (var client = new HttpWebClient(m_cookieContainer)) {
m_status = HttpStatus.Receiving;
client.UploadProgressChanged += client_UploadProgressChanged;
client.UploadValuesCompleted += client_UploadValuesCompleted;
client.DownloadProgressChanged += client_DownloadProgressChanged;
client.DownloadDataCompleted += client_DownloadDataCompleted;
client.Headers.Set("Accept", "application/json");
client.QueryString = UrlEncode(ToNameValueCollection(data));
if (client.QueryString != null)
{
Log.DebugFormat("params = {{{0}}}", string.Join(", ", client.QueryString.AllKeys
.Select(_ => string.Format("{0}:{1}", _, client.QueryString[_]))));
}
Log.DebugFormat("receiving data from: {0}", uri);
try {
var content = Encoding.UTF8.GetString(await client.DownloadDataTaskAsync(uri));
return(ToResult(content));
} catch (WebException ex) {
return(new JsonResult(new RpcException(ex.Response, ex)));
} finally {
m_status = HttpStatus.Ready;
m_progress = 0;
}
}
}
/// <summary>
/// 获取指定地址的资源的长度(以字节为单位)。
/// </summary>
/// <param name="url">请求地址。</param>
/// <returns>资源内容的长度，如果资源不存在则返回0。</returns>
public static async Task <long> Head(string url)
{
var uri = NormalUri(url);
using (var client = new HttpWebClient(m_cookieContainer)) {
m_status = HttpStatus.Receiving;
client.OnlyHead = true;
client.UploadProgressChanged += client_UploadProgressChanged;
client.UploadValuesCompleted += client_UploadValuesCompleted;
client.DownloadProgressChanged += client_DownloadProgressChanged;
client.DownloadDataCompleted += client_DownloadDataCompleted;
try {
await client.DownloadDataTaskAsync(uri);
return(client.ContentLength);
} catch (WebException) {
return(0);
} finally {
m_status = HttpStatus.Ready;
m_progress = 0;
}
}
}
/// <summary>
/// 向指定的地址上传数据
/// </summary>
/// <param name="url">请求地址。</param>
/// <param name="data">参数。</param>
/// <returns>上传的响应。</returns>
public static async Task <IResult> PostRaw(string url, byte[] data, IDictionary <string, object> d = null)
{
var uri = NormalUri(url);
using (var client = new HttpWebClient(m_cookieContainer)) {
m_status = HttpStatus.Receiving;
client.UploadProgressChanged += client_UploadProgressChanged;
client.UploadValuesCompleted += client_UploadValuesCompleted;
client.DownloadProgressChanged += client_DownloadProgressChanged;
client.DownloadDataCompleted += client_DownloadDataCompleted;
try {
var content = Encoding.UTF8.GetString(await client.UploadDataTaskAsync(uri, "POST", data));
return(ToResult(content));
} catch (WebException ex) {
return(new JsonResult(new RpcException(ex.Response, ex)));
} finally {
m_status = HttpStatus.Ready;
m_progress = 0;
}
}
}
/// <summary>
/// 从指定的地址获取包含原始数据的字节数组。如果参数start和end都是0，那么表示不指定范围。
/// </summary>
/// <param name="url">请求地址。</param>
/// <param name="start">请求内容的起始偏移(从0开始)。</param>
/// <param name="end">请求内容的终止偏移(从0开始，不包含。)</param>
/// <returns></returns>
public static async Task <byte[]> GetRaw(string url, long start = 0L, long end = 0L)
{
var uri = NormalUri(url);
using (var client = new HttpWebClient(m_cookieContainer)) {
m_status = HttpStatus.Receiving;
client.AddRange(start, end);
client.UploadProgressChanged += client_UploadProgressChanged;
client.UploadValuesCompleted += client_UploadValuesCompleted;
client.DownloadProgressChanged += client_DownloadProgressChanged;
client.DownloadDataCompleted += client_DownloadDataCompleted;
try {
return(await client.DownloadDataTaskAsync(uri));
} catch (WebException) {
return(new byte[0]);
} finally {
m_status = HttpStatus.Ready;
m_progress = 0;
}
}
}
