Check RootPath to avoid failure with typical MicroPython /flash/www

Author: Norman Young

MicroWebSrv2/libs/XAsyncSockets.py

@@ -5,6 +5,7 @@
 
 import sys
 _IS_MICROPYTHON = sys.implementation.name == 'micropython'
+_IS_MICROPYTHON_LINUX = _IS_MICROPYTHON and (sys.platform == 'linux')
 
 from   _thread  import allocate_lock, start_new_thread
 from   time     import sleep
@@ -439,7 +440,7 @@ def __init__(self, asyncSocketsPool, srvSocket, srvAddr, bufSlots) :
     def OnReadyForReading(self) :
         try :
             cliSocket, cliAddr = self._socket.accept()
-            if _IS_MICROPYTHON:
+            if _IS_MICROPYTHON_LINUX:   # TODO Resolve ports/unix dependency
                 # b'\x02\x00\x89L\x7f\x00\x00\x01'
                 address = ".".join([str(byte[0])
                                     for byte in struct.unpack('ssss', cliAddr[4:8])])

main.py

@@ -163,8 +163,16 @@ def OnWSChatClosed(webSocket) :
 # For embedded MicroPython, use a very light configuration,
 mws2.SetEmbeddedConfig()
 
-# All pages not found will be redirected to the home '/',
-mws2.NotFoundURL = '/'
+# mws2.RootPath = '/flash/www' # E.g., MicroPython
+# Confirm that RootPath will resolve for home URL
+HOME = '/'
+if not mws2.ResolvePhysicalPath(HOME):
+    raise MicroWebSrv2Exception(
+        "RootPath '%s' does not resolve with URL '%s'" % (mws2.RootPath, HOME)
+    )
+
+# All pages not found will be redirected to the home,
+mws2.NotFoundURL = HOME
 
 # Starts the server as easily as possible in managed mode,
 mws2.StartManaged()