protected virtual JObject PostAction(AipHttpRequest aipReq)
{
var respStr = SendRequet(aipReq);
// Console.WriteLine(respStr);
JObject respObj;
try
{
respObj = JsonConvert.DeserializeObject(respStr) as JObject;
}
catch (Exception e)
{
// 非json应该抛异常
throw new AipException(e.Message + ": " + respStr);
}
if (respObj == null)
{
throw new AipException("Empty response, please check input");
}
// 服务失败，不抛异常
// if (respObj["error_code"] != null)
// {
// Console.WriteLine((string)respObj["error_msg"]);
// throw new AipException((int)respObj["error_code"], (string)respObj["error_msg"]);
// }
return(respObj);
}
/// <summary>
/// 签名 host 和 Content-Type
/// </summary>
/// <param name="aipHttpRequest"></param>
/// <returns></returns>
private static string CanonicalRequest(AipHttpRequest aipHttpRequest)
{
var uri = aipHttpRequest.Uri;
var canonicalUri = Utils.UriEncode(uri.AbsolutePath);
var canonicalQuerys = aipHttpRequest.Querys
.Where(pair => !pair.Key.Equals("authorization"))
.Select(pair =>
new KeyValuePair <string, string>(Utils.UriEncode(pair.Key), Utils.UriEncode(pair.Value)))
.ToList()
.OrderBy(pair => pair.Key)
.Select(pair => string.Format("{0}={1}", pair.Key, Utils.UriEncode(pair.Value, true)))
.DefaultIfEmpty("")
.Aggregate((a, b) => a + "&" + b);
var host = uri.Host;
if (!(uri.Scheme == "https" && uri.Port == 443) && !(uri.Scheme == "http" && uri.Port == 80))
{
host += ":" + uri.Port;
}
var canonicalHeaders = "content-type:" + Utils.UriEncode(aipHttpRequest.GeneratedRequest.ContentType, true)
+ "\nhost:" + Utils.UriEncode(host);
// var canonicalHeaders = "host:" + Utils.UriEncode(host);
var canonicalRequest = string.Format("{0}\n{1}\n{2}\n{3}",
aipHttpRequest.Method, canonicalUri, canonicalQuerys, canonicalHeaders);
return(canonicalRequest);
}
protected virtual HttpWebRequest GenerateWebRequest(AipHttpRequest aipRequest)
{
Console.WriteLine(IsDev);
return(IsDev
? aipRequest.GenerateDevWebRequest(Token, Timeout)
: aipRequest.GenerateCloudRequest(ApiKey, SecretKey, Timeout));
}
protected HttpWebResponse SendRequetRaw(AipHttpRequest aipRequest)
{
var webReq = GenerateWebRequest(aipRequest);
webReq.KeepAlive = true;
Log(webReq.RequestUri.ToString());
HttpWebResponse resp;
try
{
resp = (HttpWebResponse)webReq.GetResponse();
}
catch (WebException e)
{
Console.WriteLine(e.ToString());
// 网络请求失败应该抛异常
throw new AipException((int)e.Status, e.Message);
}
if (resp.StatusCode != HttpStatusCode.OK)
{
throw new AipException((int)resp.StatusCode, "Server response code：" + (int)resp.StatusCode);
}
return(resp);
}
protected HttpWebResponse SendRequetRaw(AipHttpRequest aipRequest)
{
HttpWebRequest webReq = null;
HttpWebResponse resp = null;
try
{
webReq = GenerateWebRequest(aipRequest);
Log(webReq.RequestUri.ToString());
resp = (HttpWebResponse)webReq.GetResponse();
}
catch (WebException e)
{
// 网络请求失败应该抛异常
throw new AipException((int)e.Status, e.Message);
}
finally
{
webReq?.Abort();
}
if (resp.StatusCode != HttpStatusCode.OK)
{
throw new AipException((int)resp.StatusCode, "Server response code：" + (int)resp.StatusCode);
}
return(resp);
}
protected async Task <string> SendRequet(AipHttpRequest aipRequest)
{
HttpResponseMessage resp = await SendRequetRaw(aipRequest);
return(await resp.Content.ReadAsStringAsync());
// return Utils.StreamToString(SendRequetRaw(aipRequest).GetResponseStream(), aipRequest.ContentEncoding);
}
// common service for all interface
/// <summary>
/// 反馈接口
/// 用于用户反馈模型的效果，用户必须至少反馈一个 true/false 来表示对该结果是否满意，同时可选择反馈详细的评价。
/// http://ai.baidu.com/docs#/ImageCensoring-API/top
/// </summary>
/// <param name="data">
/// demo: 具体参考文档
/// {
/// "api_url": "https://aip.baidubce.com/rest/2.0/antiporn/v1/detect",
/// "image_logid": 123456,
/// "level": 1,
/// "correct": 1
/// }
/// </param>
/// <returns></returns>
public JObject Report(IEnumerable<Dictionary<string, object>> data)
{
var aipReq = new AipHttpRequest("https://aip.baidubce.com/rpc/2.0/feedback/v1/report")
{
Method = "POST",
BodyType = AipHttpRequest.BodyFormat.Json
};
CheckNotNull(data, "data");
aipReq.Bodys["feedback"] = data;
PreAction();
return PostAction(aipReq);
}
public static void CloudRequest(AipHttpRequest aipReq, string ak, string sk)
{
var now = DateTime.Now;
var expirationInSeconds = 1200;
var signDate = now.ToUniversalTime().ToString("yyyy'-'MM'-'dd'T'HH':'mm':'ssK");
var authStringPrefix = "bce-auth-v1/" + ak + "/" + signDate + "/" + expirationInSeconds;
var signingKey =
Hex(new HMACSHA256(Encoding.UTF8.GetBytes(sk)).ComputeHash(Encoding.UTF8.GetBytes(authStringPrefix)));
var canonicalRequestString = CanonicalRequest(aipReq);
var signature =
Hex(new HMACSHA256(Encoding.UTF8.GetBytes(signingKey)).ComputeHash(
Encoding.UTF8.GetBytes(canonicalRequestString)));
// 签名content-type 与 host
var authorization = authStringPrefix + "/content-type;host/" + signature;
aipReq.GeneratedRequest.Headers.Add("x-bce-date", signDate);
aipReq.GeneratedRequest.Headers.Add("Authorization", authorization);
}
protected virtual JObject PostAction(AipHttpRequest aipReq)
{
var respStr = SendRequet(aipReq);
JObject respObj;
try
{
respObj = JsonConvert.DeserializeObject(respStr) as JObject;
}
catch (Exception e)
{
// 非json应该抛异常
throw new AipException(e.Message + ": " + respStr);
}
if (respObj == null)
{
throw new AipException("Empty response, please check input");
}
return(respObj);
}
protected async Task <HttpResponseMessage> SendRequetRaw(AipHttpRequest aipRequest)
{
var webReq = GenerateWebRequest(aipRequest);
Log(webReq.RequestUri.ToString());
HttpResponseMessage resp;
try
{
resp = await apiClient.SendAsync(webReq);
}
catch (HttpRequestException e)
{
// 网络请求失败应该抛异常
throw new AipException((int)100, e.Message);
}
if (resp.StatusCode != HttpStatusCode.OK)
{
throw new AipException((int)resp.StatusCode, "Server response code：" + (int)resp.StatusCode);
}
return(resp);
}
protected string SendRequet(AipHttpRequest aipRequest)
{
return(Utils.StreamToString(SendRequetRaw(aipRequest).GetResponseStream(), aipRequest.ContentEncoding));
}
protected virtual HttpWebRequest GenerateWebRequest(AipHttpRequest aipRequest)
{
return(IsDev
? aipRequest.GenerateDevWebRequest(Token)
: aipRequest.GenerateCloudRequest(ApiKey, SecretKey));
}