/// <summary>
/// 处理将要向客户端response时
/// </summary>
/// <param name="response"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
protected override HttpResponseMessage ProcessResponse(HttpResponseMessage response, CancellationToken cancellationToken)
{
//var isMediaType = response.Content.Headers.ContentType.MediaType.Equals(mediaTypeName, StringComparison.OrdinalIgnoreCase);
var ver = System.Web.HttpContext.Current.Request.Headers.GetValues("api_version")?.FirstOrDefault();
var encrypt = MessageEncryptionCreator.GetInstance(ver);
if (encrypt != null)
{
if (response.StatusCode == HttpStatusCode.OK)
{
var result = response.Content.ReadAsStringAsync().Result;
// 返回消息 进行加密
var encodeResult = encrypt.Encode(result);
response.Content = new StringContent(encodeResult);
}
}
return(response);
}
/// <summary>
/// 接收到request时 处理
/// </summary>
/// <param name="request"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
protected override HttpRequestMessage ProcessRequest(HttpRequestMessage request, CancellationToken cancellationToken)
{
if (request.Content.IsMimeMultipartContent())
{
return(request);
}
// 获取请求头中 api_version版本号
var ver = System.Web.HttpContext.Current.Request.Headers.GetValues("api_version")?.FirstOrDefault();
// 根据api_version版本号获取加密对象, 如果为null 则不需要加密
var encrypt = MessageEncryptionCreator.GetInstance(ver);
if (encrypt != null)
{
// 读取请求body中的数据
string baseContent = request.Content.ReadAsStringAsync().Result;
// 获取加密的信息
// 兼容 body: 加密数据 和 body: code=加密数据
baseContent = baseContent.Match("(code=)*(?<code>[\\S]+)", 2);
// URL解码数据
baseContent = baseContent.DecodeUrl();
// 用加密对象解密数据
baseContent = encrypt.Decode(baseContent);
string baseQuery = string.Empty;
if (!request.RequestUri.Query.IsNullOrEmpty())
{
// 同 body
// 读取请求 url query数据
baseQuery = request.RequestUri.Query.Substring(1);
baseQuery = baseQuery.Match("(code=)*(?<code>[\\S]+)", 2);
baseQuery = baseQuery.DecodeUrl();
baseQuery = encrypt.Decode(baseQuery);
}
// 将解密后的 URL 重置URL请求
request.RequestUri = new Uri($"{request.RequestUri.AbsoluteUri.Split('?')[0]}?{baseQuery}");
// 将解密后的BODY数据 重置
request.Content = new StringContent(baseContent);
}
return(request);
}
