如何在 Azure 应用服务上处理对 LocalHost 的 HTTP Get 请求

Question

我正在尝试在 Azure 上托管应用程序。除了当我尝试运行该程序时，一切都很顺利。部分代码向本地主机发送 HTTP GET 请求以从其他文件检索数据。但是，它会导致以下错误页面：

Server Error in '/' Application.
An attempt was made to access a socket in a way forbidden by its access permissions 127.0.0.1:1443
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Net.Sockets.SocketException: An attempt was made to access a socket in a way forbidden by its access permissions 127.0.0.1:1443

Source Error:


Line 9:  <div id="menu">
Line 10:   <%=
Line 11:   ServerSideWebReader.WebReader.fetch("http://localhost:1443/Ajax/Widgets/Navigation/Navigation.aspx?id=Welcome to <Removed>", new string[0], new string[0]) %>
Line 12: </div>
Line 13: 

Source File: c:\home\site\wwwroot\Default.aspx    Line: 11

Stack Trace:


[SocketException (0x271d): An attempt was made to access a socket in a way forbidden by its access permissions 127.0.0.1:1443]
   System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress) +194
   System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception) +591

[WebException: Unable to connect to the remote server]
   System.Net.WebClient.UploadValues(Uri address, String method, NameValueCollection data) +508
   System.Net.WebClient.UploadValues(String address, String method, NameValueCollection data) +38
   ServerSideWebReader.WebReader.fetch(String url, String[] paramNames, String[] paramValues) in C:\GuerillaDevCo\ServerSideWebReader\WebReader.cs:18
   ASP.default_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in c:\home\site\wwwroot\Default.aspx:11
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +270
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +14
   System.Web.UI.Page.Render(HtmlTextWriter writer) +30
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +67
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +101
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +27
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1342

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4330.0

我们之前已经能够在 Windows Server 2012 上成功运行此程序。它现在正在 Azure 上运行。我已阅读 Azure 文档 对本地主机的任何请求都必须有该端口的侦听套接字。但是，它规定指定的端口必须大于 1024。如果我将 HTTP 请求的端口更改为 80 (HTTP) 或 433 (HTTPS) 以外的端口以便我可以符合约束，则 HTTP 请求仍然是能够收到标准回复吗？

此外，我想知道如何使用 C# 或其他与 Azure 配合使用的工具创建侦听套接字。该项目当前使用 ASP.NET V4.8。

长话短说 我想找到一种方法来成功允许在 Azure 上的应用程序中向本地主机发送 HTTP 请求。我有 2 个与此相关的问题/疑虑需要帮助。

1. 有关使用高于 1042 的端口向本地主机发出 HTTP 请求的确认/信息。
2. 有关如何使用 C# 或其他方法创建侦听套接字的信息。