处理Azure登台疯狂的URL

Question

我正在azure中部署一个包含web站点和wcf服务的webrole ...
该站点使用来自wcf的服务.
这里的问题是,登台部署为端点创建了一个疯狂的URL,我必须不断更改web.config中的端点...

我想知道是否有办法要么"预测"网址是什么,要么强迫一个甚至指向一个通用主机,如"localhost"???

Answer 1

您应该能够使用角色发现来查找 WCF 端点。请参阅此处的 SO 答案及其链接到的博客文章。

我自己的用于连接到 azure 服务的抽象基类基于该文章。它使用角色发现来创建一个如下所示的通道：

    #region Channel
    protected String roleName;
    protected String serviceName;
    protected String endpointName;
    protected String protocol = @"http";

    protected EndpointAddress _endpointAddress;
    protected BasicHttpBinding httpBinding;
    protected NetTcpBinding tcpBinding;

    protected IChannelFactory channelFactory;
    protected T client;

    protected virtual AddressHeader[] addressHeaders
    {
        get
        {
            return null;
        }
    }

    protected virtual EndpointAddress endpointAddress
    {
        get
        {
            if (_endpointAddress == null)
            {
                var endpoints = RoleEnvironment.Roles[roleName].Instances.Select(i => i.InstanceEndpoints[endpointName]).ToArray();
                var endpointIP = endpoints.FirstOrDefault().IPEndpoint;
                if(addressHeaders != null)
                {
                    _endpointAddress = new EndpointAddress(new Uri(String.Format("{1}://{0}/{2}", endpointIP, protocol, serviceName)), addressHeaders);
                }
                else
                {
                    _endpointAddress = new EndpointAddress(String.Format("{1}://{0}/{2}", endpointIP, protocol, serviceName));
                }

            }
            return _endpointAddress;
        }
    }

    protected virtual Binding binding
    {
        get
        {
            switch (protocol)
            {
                case "tcp.ip":
                    if (tcpBinding == null) tcpBinding = new NetTcpBinding();
                    return tcpBinding;
                default:
                    //http
                    if (httpBinding == null) httpBinding = new BasicHttpBinding();
                    return httpBinding;
            }
        }
    }

    public virtual T Client
    {
        get
        {
            if (this.client == null)
            {
                this.channelFactory = new ChannelFactory<T>(binding, endpointAddress);
                this.client = ((ChannelFactory<T>)channelFactory).CreateChannel();
                ((IContextChannel)client).OperationTimeout = TimeSpan.FromMinutes(2);
                var scope = new OperationContextScope(((IContextChannel)client));
                addCustomMessageHeaders(scope);
            }
            return this.client; 
        }
    }
    #endregion

在派生类中，我向它传递以下变量（例如）：

this.roleName = "WebServiceRole";
this.endpointName = "HttpInternal";
this.serviceName = "services/Accounts.svc";

我根本不需要参考暂存（或生产）URL。

有关更多详细信息，请参阅我的答案：在同一解决方案中添加 WCF 引用，而不添加服务引用