Merge branch 'release/2.2' => 'master'

Author: davidfowl

src/Microsoft.AspNetCore.Hosting/Internal/HostingLoggerExtensions.cs

@@ -94,7 +94,8 @@ public static void ServerShutdownException(this ILogger logger, Exception ex)
 
  private class HostingLogScope : IReadOnlyList<KeyValuePair<string, object>>
  {
- private readonly HttpContext _httpContext;
+ private readonly string _path;
+ private readonly string _traceIdentifier;
  private readonly string _correlationId;
 
  private string _cachedToString;
@@ -113,11 +114,11 @@ public KeyValuePair<string, object> this[int index]
  {
  if (index == 0)
  {
- return new KeyValuePair<string, object>("RequestId", _httpContext.TraceIdentifier);
+ return new KeyValuePair<string, object>("RequestId", _traceIdentifier);
  }
  else if (index == 1)
  {
- return new KeyValuePair<string, object>("RequestPath", _httpContext.Request.Path.ToString());
+ return new KeyValuePair<string, object>("RequestPath", _path);
  }
  else if (index == 2)
  {
@@ -130,7 +131,8 @@ public KeyValuePair<string, object> this[int index]
 
  public HostingLogScope(HttpContext httpContext, string correlationId)
  {
- _httpContext = httpContext;
+ _traceIdentifier = httpContext.TraceIdentifier;
+ _path = httpContext.Request.Path.ToString();
  _correlationId = correlationId;
  }
 
@@ -141,8 +143,8 @@ public override string ToString()
  _cachedToString = string.Format(
  CultureInfo.InvariantCulture,
  "RequestId:{0} RequestPath:{1}",
- _httpContext.TraceIdentifier,
- _httpContext.Request.Path);
+ _traceIdentifier,
+ _path);
  }
 
  return _cachedToString;