Catch unknown host and expose isConnected property

Author: StringEpsilon

src/fbNetworkClient.bas

@@ -100,6 +100,10 @@ function fbNetworkClient.open(address as string, _port as uinteger, _protocol as
 		end if
 
 		this._addressInfo = resolveHost(address, _port)
+		if (this._addressInfo = 0) then
+			this.onError(net_unknownHost)
+		end if
+		
 		this.setInfo(_port, _protocol, address)
 		if (this.setSocket() = false) then
 			mutexunlock(this._mutex)
@@ -109,6 +113,9 @@ function fbNetworkClient.open(address as string, _port as uinteger, _protocol as
 		if( connect( this._socket, this._addressInfo->ai_addr, this._addressInfo->ai_addrlen ) = SOCKET_ERROR ) then
 			closesocket( this._socket )
 			freeaddrinfo(this._addressInfo)
+			this._socket = 0
+			this._addressInfo = 0
+			
 			mutexunlock(this._mutex)
 			this.onError(net_connectionRefused)
 			return false
@@ -131,6 +138,9 @@ function fbNetworkClient.open(address as string, _port as uinteger, _protocol as
 	return true
 end function
 
+property fbNetworkClient.isConnected() as boolean
+	return this._socket <> 0
+end property
 
 property fbNetworkClient.host() as string
 	return this.info.host

src/fbNetworkClient.bi

@@ -35,11 +35,12 @@ end type
 
 enum fbNetworkError
 	net_undefined = 0
-	net_timeout
-	net_cantCreateSocket
-	net_connectionInUse
-	net_invalidPort
-	net_connectionRefused	
+	net_timeout = 1
+	net_cantCreateSocket = 2
+	net_connectionInUse = 3
+	net_invalidPort = 4
+	net_connectionRefused = 5
+	net_unknownHost = 6
 end enum
 
 type fbNetworkClient extends object
@@ -62,6 +63,7 @@ type fbNetworkClient extends object
 		declare property host() as string
 		declare property ip() as string
 		declare property port() as integer
+		declare property isConnected() as boolean
 
 		declare abstract sub onConnect()
 		declare abstract sub onClose()