增加异常捕获

FastGithub/AppHostedService.cs

@@ -67,6 +67,8 @@ namespace FastGithub
         private async Task CheckFastGithubProxyAsync(CancellationToken cancellationToken)
         {
             if (OperatingSystem.IsWindows() == false)
+            {
+                try
                 {
                     if (await this.UseFastGithubProxyAsync() == false)
                     {
@@ -74,6 +76,11 @@ namespace FastGithub
                         this.logger.LogWarning($"请设置系统自动代理为http://{IPAddress.Loopback}:{httpProxyPort}，或手动代理http/https为{IPAddress.Loopback}:{httpProxyPort}");
                     }
                 }
+                catch (Exception)
+                {
+                    this.logger.LogWarning("尝试获取代理信息失败");
+                }
+            }
         }