Merge pull request #45 from tibbotech/firmware_dl_fixes

http and filenum fixes for firmware upgrades

filenum/filenum.tbs

@@ -48,9 +48,15 @@ public function filenum_open(byref signature as string, byref filename as string
 					filenum_debugprint("'"+signature+"' tried to open file '"+filename+"'. This file is already opened on file number "+str(filenum_open)+".")
 				#endif
 
+				fd.filenum=f
 				status=PL_FD_STATUS_OK
 				filenum_open=f
-				exit function
+				if fd.fileopened=YES then
+					exit function
+				else
+					fd.close()
+					exit for
+				end if
 			end if
 		end if
 	next f

http/http.tbs

@@ -638,7 +638,7 @@ sub http_sock_state_update(newstatesimple as enum pl_sock_state_simple)
 	if http_check_socket_list()=NG then
 		exit sub
 	end if	
-	if sock.statesimple=PL_SSTS_CLOSED and http_request_item.state >= DNS_COMPLETE then
+	if sock.statesimple=PL_SSTS_CLOSED and http_request_item.state >= DNS_COMPLETE and sock.rxlen=0 then
 		http_failed("Connection closed")
 		exit sub
 	end if