C# 如何在WCF上使用HttpTransportBindingElement设置代理凭据?
我在端口80上使用HttpTransportBindingElement和IIS编码了一个WCF服务。 只要不使用代理,代码就可以正常工作。但是,如果客户有http代理,则WCF客户端和服务器之间的通信在这种情况下不起作用,原因是发生以下错误: “没有端点在侦听。。。这可以接受这个信息。这通常是由不正确的地址或SOAP操作引起的。” 必须仅通过代码使用设置强> 以下是我针对该问题的代码方法,但我坚持:C# 如何在WCF上使用HttpTransportBindingElement设置代理凭据?,c#,wcf,wcf-security,C#,Wcf,Wcf Security,我在端口80上使用HttpTransportBindingElement和IIS编码了一个WCF服务。 只要不使用代理,代码就可以正常工作。但是,如果客户有http代理,则WCF客户端和服务器之间的通信在这种情况下不起作用,原因是发生以下错误: “没有端点在侦听。。。这可以接受这个信息。这通常是由不正确的地址或SOAP操作引起的。” 必须仅通过代码使用设置 以下是我针对该问题的代码方法,但我坚持: bool SendClientRequest(Action<ICustomerService
bool SendClientRequest(Action<ICustomerService> channel)
{
string proxy ="my.proxy.domain:8080";
string user = "user1";
string password="secret";
// maybe i do not need this 3 lines!
WebProxy webproxy = new WebProxy(proxy, true);
webproxy.Credentials = new NetworkCredential(user, password);
WebRequest.DefaultWebProxy = webproxy;
CustomBinding customBinding = new CustomBinding();
customBinding.Elements.Add(new HttpTransportBindingElement()
{
AuthenticationSchemes.None : AuthenticationSchemes.Basic,
ProxyAddress = string.IsNullOrEmpty(proxy) ? null : new Uri(proxy),
UseDefaultWebProxy = false,
BypassProxyOnLocal = true,
TransferMode = TransferMode.Streamed,
MaxReceivedMessageSize = 84087406592,
MaxBufferPoolSize = 0x1000000,
MaxBufferSize = 0x1000000
});
using (ChannelFactory<ICustomerService> factory = new
ChannelFactory<ICustomerService>(customBinding ))
{
IClientChannel contextChannel = null;
string url = "http://my.domain.de/Distribution/eService.svc",
EndpointAddress ep = new EndpointAddress(url);
ICustomerService clientChannel = factory.CreateChannel(ep);
contextChannel = clientChannel as IClientChannel;
contextChannel.OperationTimeout = TimeSpan.FromMinutes(rcvTimeout );
channel(clientChannel); // <- here i get the exception!
return true;
}
}
bool sendclienterrequest(动作频道)
{
string proxy=“my.proxy.domain:8080”;
字符串user=“user1”;
字符串password=“secret”;
//也许我不需要这三行!
WebProxy WebProxy=新的WebProxy(proxy,true);
webproxy.Credentials=新的网络凭据(用户、密码);
WebRequest.DefaultWebProxy=webproxy;
CustomBinding CustomBinding=新的CustomBinding();
添加(新的HttpTransportBindingElement()
{
AuthenticationSchemes.None:AuthenticationSchemes.Basic,
ProxyAddress=string.IsNullOrEmpty(代理)?null:新Uri(代理),
UseDefaultWebProxy=false,
BypassProxyOnLocal=true,
TransferMode=TransferMode.Streamed,
MaxReceivedMessageSize=84087406592,
MaxBufferPoolSize=0x1000000,
MaxBufferSize=0x1000000
});
使用(ChannelFactory工厂=新
ChannelFactory(定制绑定))
{
IClientChannel contextChannel=null;
字符串url=”http://my.domain.de/Distribution/eService.svc",
EndpointAddress ep=新的EndpointAddress(url);
ICCustomerService clientChannel=factory.CreateChannel(ep);
contextChannel=clientChannel作为IClientChannel;
contextChannel.OperationTimeout=TimeSpan.FromMinutes(rcvTimeout);
频道(clientChannel);//我认为您有一些选择,下面我将详细介绍其中一些
首先,您可以将UseDefaultWebProxy
设置为true。这意味着将自动从系统代理设置中检索代理信息,可在Internet Explorer(Internet选项>连接>LAN设置>代理服务器)中配置。如果您不需要指定代理使用的凭据,这可能是合适的
另一种对我有效的方法是在HttpTransportBindingElement()中使用ProxyAuthenticationScheme
属性
对象。此属性仅在CustomBinding
类上可用,并允许指定用于对代理进行身份验证的身份验证方案。与此相结合,必须根据属性ProxyAddress
设置代理服务器。最后但并非最不重要的是,针对prox使用的凭据y应该根据使用的身份验证方案设置,因此,例如,使用AuthenticationSchemes.Ntlm
意味着在ChannelFactory.ClientCredentials.Windows.ClientCredential
或ChannelFactory.ClientCredentials.HttpDigest.ClientCredential
对于第二种方法,请务必注意在ChannelFactory中保留用于远程服务的凭据与用于代理服务器的凭据之间的区别。为了清晰起见,我在下面的代码示例中突出显示了这些凭据:
// Example service call using a CustomBinding that is configured for client
// authentication based on a user name and password sent as part of the message.
var binding = new CustomBinding();
TransportSecurityBindingElement securityBindingElement = SecurityBindingElement.CreateUserNameOverTransportBindingElement();
var secureTransport = new HttpsTransportBindingElement();
secureTransport.UseDefaultWebProxy = false;
secureTransport.ProxyAddress = new Uri("http://some-proxy");
secureTransport.ProxyAuthenticationScheme = AuthenticationSchemes.Ntlm;
binding.Elements.Add(securityBindingElement);
binding.Elements.Add(secureTransport);
var endpointAddress = new EndpointAddress("https://some-service");
var factory = new ChannelFactory<IService>(binding, endpointAddress);
// Credentials for authentication against the remote service
factory.Credentials.UserName.UserName = "serviceUser";
factory.Credentials.UserName.Password = "abc";
// Credentials for authentication against the proxy server
factory.Credentials.Windows.ClientCredential.UserName = "domain\user";
factory.Credentials.Windows.ClientCredential.Password = "xyz";
var client = factory.CreateChannel();
client.CallMethod();
//使用为客户端配置的CustomBinding的示例服务调用
//基于作为消息一部分发送的用户名和密码的身份验证。
var binding=新的CustomBinding();
TransportSecurityBindingElement securityBindingElement=securityBindingElement.CreateUserNameOverTransportBindingElement();
var secureTransport=新的HttpsTransportBindingElement();
secureTransport.UseDefaultWebProxy=false;
secureTransport.ProxyAddress=新Uri(“http://some-proxy");
secureTransport.ProxyAuthenticationScheme=AuthenticationSchemes.Ntlm;
binding.Elements.Add(securityBindingElement);
binding.Elements.Add(secureTransport);
var endpointAddress=新的端点地址(“https://some-service");
var factory=新的ChannelFactory(绑定,端点地址);
//针对远程服务进行身份验证的凭据
factory.Credentials.UserName.UserName=“serviceUser”;
factory.Credentials.UserName.Password=“abc”;
//针对代理服务器进行身份验证的凭据
factory.Credentials.Windows.ClientCredential.UserName=“域\用户”;
factory.Credentials.Windows.ClientCredential.Password=“xyz”;
var client=factory.CreateChannel();
client.CallMethod();