/// <summary>
/// 执行一个服务请求
/// </summary>
/// <param name="serviceRequest"></param>
/// <returns></returns>
public async Task <HttpResponseMessage> CallServiceAsync(ServiceRequest serviceRequest)
{
//
HttpClient client = null;
//
// setup proxy
//
if (!string.IsNullOrWhiteSpace(_requestContext.ClientConfiguration.ProxyHost))
{
HttpClientHandler httpClientHandler = new HttpClientHandler()
{
Proxy = new MyProxy(string.Format("{0}:{1}", _requestContext.ClientConfiguration.ProxyHost, _requestContext.ClientConfiguration.ProxyPort)),
PreAuthenticate = false,
UseDefaultCredentials = true,
};
if (!String.IsNullOrEmpty(_requestContext.ClientConfiguration.ProxyUserName))
{
httpClientHandler.Proxy.Credentials = String.IsNullOrEmpty(_requestContext.ClientConfiguration.ProxyDomain)
? new NetworkCredential(_requestContext.ClientConfiguration.ProxyUserName, _requestContext.ClientConfiguration.ProxyPassword ?? string.Empty)
: new NetworkCredential(_requestContext.ClientConfiguration.ProxyUserName, _requestContext.ClientConfiguration.ProxyPassword ?? string.Empty,
_requestContext.ClientConfiguration.ProxyDomain);
httpClientHandler.UseDefaultCredentials = false;
httpClientHandler.PreAuthenticate = true;
}
client = new HttpClient(httpClientHandler);
}
else
{
client = new HttpClient();
}
var request = new HttpRequestMessage(serviceRequest.HttpMethod,
serviceRequest.BuildRequestUri(_requestContext));
//
// setup headers
//
// 超时时间，毫秒
client.Timeout = TimeSpan.FromMilliseconds(_requestContext.ClientConfiguration.ConnectionTimeout);
foreach (var h in serviceRequest.Headers)
{
bool rtn = request.Headers.TryAddWithoutValidation(h.Key, h.Value);
if (rtn == false)
{
//throw new InvalidOperationException("不支持的header:" + h.Key);
Console.WriteLine("不支持的header:" + h.Key);
}
}
if (!string.IsNullOrWhiteSpace(_requestContext.ClientConfiguration.UserAgent))
{
client.DefaultRequestHeaders.UserAgent.TryParseAdd(_requestContext.ClientConfiguration.UserAgent);
}
// request content
//
if (serviceRequest.RequestContentType != RequestContentType.None &&
(serviceRequest.HttpMethod == HttpMethod.Put || serviceRequest.HttpMethod == HttpMethod.Post))
{
if (serviceRequest.RequestContentType == RequestContentType.String)
{
request.Content = new StringContent(serviceRequest.StringContent, Encoding.UTF8, serviceRequest.ContentMimeType);
}
else if (serviceRequest.RequestContentType == RequestContentType.Stream)
{
request.Content = new StreamContent(serviceRequest.StreamContent);
request.Content.Headers.ContentType =
MediaTypeHeaderValue.Parse(serviceRequest.ContentMimeType);
}
}
if (serviceRequest.ContentMd5 != null && request.Content != null)
{
request.Content.Headers.ContentMD5 = serviceRequest.ContentMd5;
}
// 因为传入的contenttype会被自动更改，所以在最后再进行签名处理
SignatureHelper.SignRequest(serviceRequest, _requestContext.OssCredential, request);
// 需要增加是因为objectMeta和head API返回的消息体是空的，但是content-length却是实际object的长度，此处违反了协议。
// 使用默认参数会自动读取content，导致异常。
return(await client.SendAsync(request, HttpCompletionOption.ResponseHeadersRead));
}
/// <summary>
/// 执行一个服务请求
/// </summary>
/// <param name="serviceRequest"></param>
/// <returns></returns>
public async Task <HttpResponseMessage> CallServiceAsync(ServiceRequest serviceRequest)
{
var request = new HttpRequestMessage(serviceRequest.HttpMethod,
serviceRequest.BuildRequestUri(_requestContext));
//
// setup headers
//
// 超时时间，毫秒
//httpclient 默认100s
// httpclient的 BaseAddress TimeOut MaxResponseContentBufferSize 属性 只能被设置一次
//第二次设置就会出现异常：
//“This instance has already started one or more requests.
// Properties can only be modified before sending the first request.”
if (_requestContext.ClientConfiguration.ConnectionTimeout != -1)
{
_client.Timeout = TimeSpan.FromMilliseconds(_requestContext.ClientConfiguration.ConnectionTimeout);
}
foreach (var h in serviceRequest.Headers)
{
bool rtn = request.Headers.TryAddWithoutValidation(h.Key, h.Value);
if (rtn == false)
{
throw new InvalidOperationException("不支持的header:" + h.Key);
}
}
if (!string.IsNullOrWhiteSpace(_requestContext.ClientConfiguration.UserAgent))
{
_client.DefaultRequestHeaders.UserAgent.TryParseAdd(_requestContext.ClientConfiguration.UserAgent);
}
// request content
//
if (serviceRequest.RequestContentType != RequestContentType.None &&
(serviceRequest.HttpMethod == HttpMethod.Put || serviceRequest.HttpMethod == HttpMethod.Post))
{
if (serviceRequest.RequestContentType == RequestContentType.String)
{
request.Content = new StringContent(serviceRequest.StringContent, Encoding.UTF8, serviceRequest.ContentMimeType);
}
else if (serviceRequest.RequestContentType == RequestContentType.Stream)
{
request.Content = new StreamContent(serviceRequest.StreamContent);
request.Content.Headers.ContentType =
MediaTypeHeaderValue.Parse(serviceRequest.ContentMimeType);
}
}
if (serviceRequest.ContentMd5 != null && request.Content != null)
{
request.Content.Headers.ContentMD5 = serviceRequest.ContentMd5;
}
// 因为传入的contenttype会被自动更改，所以在最后再进行签名处理
SignatureHelper.SignRequest(serviceRequest, _requestContext.OssCredential, request);
// 需要增加是因为objectMeta和head API返回的消息体是空的，但是content-length却是实际object的长度，此处违反了协议。
// 使用默认参数会自动读取content，导致异常。
return(await _client.SendAsync(request, HttpCompletionOption.ResponseHeadersRead));
}