这可能是一个重复的问题，但它与本论坛的内容完全不同。
我有一个Application，它使用外部供应商提供的REST API服务。
我一直在用SoapUI 5.2.1工具测试它，我可以连接和 获取数据，
但是当我从我的应用程序中执行相同操作时，此时我已经抛出了这个错误：
(HttpWebResponse)request2.GetResponse();
在此之前我做了什么：
我正在使用的准则：
摘要Authenticator类：
public class DigestAuthFixer
{
private static string _host;
private static string _user;
private static string _password;
private static string _realm;
private static string _nonce;
private static string _qop;
private static string _cnonce;
private static DateTime _cnonceDate;
private static int _nc;
public DigestAuthFixer(string host, string user, string password)
{
// TODO: Complete member initialization
_user = user;
_password = password;
_host = host;
}
private string CalculateMd5Hash(
string input)
{
var inputBytes = Encoding.ASCII.GetBytes(input);
var hash = MD5.Create().ComputeHash(inputBytes);
var sb = new StringBuilder();
foreach (var b in hash)
sb.Append(b.ToString("x2"));
return sb.ToString();
}
private string GrabHeaderVar(
string varName,
string header)
{
var regHeader = new Regex(string.Format(@"{0}=""([^""]*)""", varName));
var matchHeader = regHeader.Match(header);
if (matchHeader.Success)
return matchHeader.Groups[1].Value;
throw new ApplicationException(string.Format("Header {0} not found", varName));
}
public string GetDigestHeader(
string dir)
{
_nc = _nc + 1;
var ha1 = CalculateMd5Hash(string.Format("{0}:{1}:{2}", _user, _realm, _password));
var ha2 = CalculateMd5Hash(string.Format("{0}:{1}", "GET", dir));
var digestResponse =
CalculateMd5Hash(string.Format("{0}:{1}:{2:00000000}:{3}:{4}:{5}", ha1, _nonce, _nc, _cnonce, _qop, ha2));
//return string.Format("Digest username=\"{0}\", realm=\"{1}\", nonce=\"{2}\", uri=\"{3}\", " +
// "algorithm=MD5, response=\"{4}\", qop={5}, nc={6:00000000}, cnonce=\"{7}\"",
// _user, _realm, _nonce, dir, digestResponse, _qop, _nc, _cnonce);
return string.Format("Digest username=\"{0}\", realm=\"{1}\", nonce=\"{2}\", uri=\"{3}\", " +
"response=\"{4}\", qop={5}, nc={6:00000000}, cnonce=\"{7}\"",
_user, _realm, _nonce, dir, digestResponse, _qop, _nc, _cnonce);
}
public string GrabResponse(
string dir)
{
var url = _host + dir.TrimStart('/');
var uri = new Uri(url);
var request = (HttpWebRequest)WebRequest.Create(uri);
// If we've got a recent Auth header, re-use it!
if (!string.IsNullOrEmpty(_cnonce) &&
DateTime.Now.Subtract(_cnonceDate).TotalHours < 1.0)
{
var digestHeader = GetDigestHeader(dir);
request.Headers.Add("Authorization", digestHeader);
}
HttpWebResponse response;
try
{
ServicePointManager.ServerCertificateValidationCallback = delegate (object s, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) { return true; };
//ServicePointManager.UseNagleAlgorithm = false;
//https://holyhoehle.wordpress.com/2010/01/12/webrequest-slow/
System.Net.WebRequest.DefaultWebProxy = null;
request.Proxy = null;
response = (HttpWebResponse)request.GetResponse();
}
catch (WebException ex)
{
// Try to fix a 401 exception by adding a Authorization header
if (ex.Response == null || ((HttpWebResponse)ex.Response).StatusCode != HttpStatusCode.Unauthorized)
throw;
var wwwAuthenticateHeader = ex.Response.Headers["WWW-Authenticate"];
_realm = GrabHeaderVar("realm", wwwAuthenticateHeader);
_nonce = GrabHeaderVar("nonce", wwwAuthenticateHeader);
_qop = GrabHeaderVar("qop", wwwAuthenticateHeader);
_nc = 00000001;
_cnonce = new Random().Next(123400, 9999999).ToString();
_cnonceDate = DateTime.Now;
var request2 = (HttpWebRequest)WebRequest.Create(uri);
var digestHeader2 = GetDigestHeader(uri.AbsoluteUri);
request2.Headers.Add("Authorization", digestHeader2);
//https://holyhoehle.wordpress.com/2010/01/12/webrequest-slow/
System.Net.WebRequest.DefaultWebProxy = null;
request2.Proxy = null;
try
{
response = (HttpWebResponse)request2.GetResponse();
}
catch (Exception er)
{
throw er;
}
}
var reader = new StreamReader(response.GetResponseStream());
return reader.ReadToEnd();
}
}
public class DigestAuthenticator : IAuthenticator
{
private readonly string _user;
private readonly string _pass;
private readonly string _host;
public DigestAuthenticator(string user, string pass, string host)
{
_user = user;
_pass = pass;
_host = host;
}
public void Authenticate(IRestClient client, IRestRequest request)
{
request.Credentials = new NetworkCredential(_user, _pass);
var url = client.BuildUri(request).ToString();
var uri = new Uri(url);
var digestAuthFixer = new DigestAuthFixer(_host, _user, _pass);
digestAuthFixer.GrabResponse(uri.PathAndQuery);
var digestHeader = digestAuthFixer.GetDigestHeader(uri.PathAndQuery);
request.AddParameter("Authorization", digestHeader, ParameterType.HttpHeader);
}
}
Rest代理类：
public class RESTProxy
{
string DEFAULT_MODULE = "my-rest";
string DEFAULT_HOST = "http://xxxx.org/";
string DEFAULT_USER = "xxx:xxxx:xxx";
string DEFAULT_PASS = "xxxx";
public T Execute<T>(RestRequest request) where T : new()
{
//@"http://igvde.nrifintech.com:8181/igv-rest-uat"
var client = new RestClient(string.Concat(DEFAULT_HOST,DEFAULT_MODULE))
{
Authenticator = new DigestAuthenticator(DEFAULT_USER, DEFAULT_PASS, DEFAULT_HOST)
};
var response = client.Execute<T>(request);
if (response.ErrorException != null)
{
throw response.ErrorException;
}
return response.Data;
}
public RestRequest initRestRequest(string pRestResourceName, Method pRestServiceVerb, object pRestRequestBody)
{
var request = new RestRequest(pRestResourceName, pRestServiceVerb);
request.RequestFormat = DataFormat.Json;
if (pRestRequestBody != null)
{
request.AddBody(pRestRequestBody);
}
return request;
}
}