使用最新的rc1-final版本的ASP.NET 5,我试图在Azure API App控制器方法中找到远程IP地址。
运行代码时,'context'是this.HttpContext,位于控制器方法内。
但是功能将返回null,因为该功能不存在。
IHttpConnectionFeature feature = context.Features.Get<IHttpConnectionFeature>();
是否必须在配置中启用此功能才能使用此功能?
谢谢, 柯克
答案 0 :(得分:0)
我遇到了同样的问题。 以下代码适用于我:
public async Task<IActionResult> Index()
{
if (!UserID.HasValue)
{
UpdateRemoteIp(HttpContext);
var remoteIpAddress = HttpContext.Features.Get<IHttpConnectionFeature>()?.RemoteIpAddress.ToString();
if (remoteIpAddress == null)
{
throw new Exception("Cannot determine client IP");
}
await _userService.LoginAnonymous(remoteIpAddress);
string url = UriHelper.GetDisplayUrl(Request);
return Redirect(url);
}
PrepareViewModel();
return View("Index", ViewModel);
}
private static void UpdateRemoteIp(HttpContext httpContext)
{
var xForwardedForHeaderValue = httpContext.Request.Headers.GetCommaSeparatedValues(XForwardedForHeaderName);
if (xForwardedForHeaderValue != null && xForwardedForHeaderValue.Length > 0)
{
IPAddress ipFromHeader;
int? port;
if (IPAddressWithPortParser.TryParse(xForwardedForHeaderValue[0], out ipFromHeader, out port))
{
var connection = httpContext.Connection;
var remoteIPString = connection.RemoteIpAddress?.ToString();
if (!string.IsNullOrEmpty(remoteIPString))
{
httpContext.Request.Headers[XOriginalIPName] = remoteIPString;
}
if (port.HasValue)
{
if (connection.RemotePort != 0)
{
httpContext.Request.Headers[XOriginalPortName] = connection.RemotePort.ToString(CultureInfo.InvariantCulture);
}
connection.RemotePort = port.Value;
}
connection.RemoteIpAddress = ipFromHeader;
}
}
}
希望它可以帮到你