remove force cast of link to RTNLLinkBridge

lhoward · lhoward · commit fa9fca0101ac · 2025-08-13T13:38:04.000+10:00
diff --git a/Examples/nltool/main.swift b/Examples/nltool/main.swift
@@ -80,13 +80,13 @@ func findBridge(index: Int, socket: NLSocket) async throws -> RTNLLinkBridge {
 }
 
 func add_vlan(command: Command, socket: NLSocket, link: RTNLLink, arg: String) async throws {
-  guard let vlan = UInt16(arg) else { usage() }
-  try await (link as! RTNLLinkBridge).add(vlans: Set([vlan]), socket: socket)
+  guard let link = link as? RTNLLinkBridge, let vlan = UInt16(arg) else { usage() }
+  try await link.add(vlans: Set([vlan]), socket: socket)
 }
 
 func del_vlan(command: Command, socket: NLSocket, link: RTNLLink, arg: String) async throws {
-  guard let vlan = UInt16(arg) else { usage() }
-  try await (link as! RTNLLinkBridge).remove(vlans: Set([vlan]), socket: socket)
+  guard let link = link as? RTNLLinkBridge, let vlan = UInt16(arg) else { usage() }
+  try await link.remove(vlans: Set([vlan]), socket: socket)
 }
 
 func add_fdb(

Original file line number	Diff line number	Diff line change
`@@ -80,13 +80,13 @@ func findBridge(index: Int, socket: NLSocket) async throws -> RTNLLinkBridge {`
`80`	`80`	`}`
`81`	`81`
`82`	`82`	`func add_vlan(command: Command, socket: NLSocket, link: RTNLLink, arg: String) async throws {`
`83`		`- guard let vlan = UInt16(arg) else { usage() }`
`84`		`- try await (link as! RTNLLinkBridge).add(vlans: Set([vlan]), socket: socket)`
	`83`	`+ guard let link = link as? RTNLLinkBridge, let vlan = UInt16(arg) else { usage() }`
	`84`	`+ try await link.add(vlans: Set([vlan]), socket: socket)`
`85`	`85`	`}`
`86`	`86`
`87`	`87`	`func del_vlan(command: Command, socket: NLSocket, link: RTNLLink, arg: String) async throws {`
`88`		`- guard let vlan = UInt16(arg) else { usage() }`
`89`		`- try await (link as! RTNLLinkBridge).remove(vlans: Set([vlan]), socket: socket)`
	`88`	`+ guard let link = link as? RTNLLinkBridge, let vlan = UInt16(arg) else { usage() }`
	`89`	`+ try await link.remove(vlans: Set([vlan]), socket: socket)`
`90`	`90`	`}`
`91`	`91`
`92`	`92`	`func add_fdb(`