Add refresh button to ports view to refresh candidate

Fix a bad leak in the ports view

Fix the ip address of candidate ports

src/vs/workbench/api/node/extHostTunnelService.ts

@@ -178,7 +178,7 @@ export class ExtHostTunnelService extends Disposable implements IExtHostTunnelSe
 						const address = row.local_address.split(':');
 						return {
 							socket: parseInt(row.inode, 10),
-							ip: address[0],
+							ip: this.parseIpAddress(address[0]),
 							port: parseInt(address[1], 16)
 						};
 					}).map(port => [port.port, port])
@@ -186,6 +186,17 @@ export class ExtHostTunnelService extends Disposable implements IExtHostTunnelSe
 		];
 	}
 
+	private parseIpAddress(hex: string): string {
+		let result = '';
+		for (let i = hex.length - 2; (i >= 0); i -= 2) {
+			result += parseInt(hex.substr(i, 2), 16);
+			if (i !== 0) {
+				result += '.';
+			}
+		}
+		return result;
+	}
+
 	private loadConnectionTable(stdout: string): Record<string, string>[] {
 		const lines = stdout.trim().split('\n');
 		const names = lines.shift()!.trim().split(/\s+/)