Improved server_prompt example, got rid of the "~" junk (that was a bad idea in the first place...), and put a success message in for find_brick.

Author: marcusw

examples/server_prompt.py

@@ -1,14 +1,26 @@
-import socket
+#This script is an example for the nxt.server module. You need to run
+#nxt.server.serve_forever() in another window. Or, if you want to use
+#this across a network, pass the IP of the computer running the server
+#as an argument in the command line.
+
+import socket, sys
+
+try:
+    server = sys.argv[1]
+    bindto = ''
+except:
+    server = 'localhost'
+    bindto = 'localhost'
 
 insock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
 outsock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
-insock.bind(('localhost', 54374))
+insock.bind((bindto, 54374))
 
 while 1:
     command = raw_input('nxt> ')
-    outsock.sendto(command, ('localhost', 54174))
+    outsock.sendto(command, (server, 54174))
     retvals, addr = insock.recvfrom(1024)
     retcode = retvals[0]
-    retmsg = retvals[1:retvals.index('~')]
+    retmsg = retvals[1:len(retvals)]
     print 'Return code: '+retcode
     print 'Return message: '+retmsg

nxt/server.py

@@ -10,7 +10,8 @@
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 
-'''Use for a socket interface NXT driver.'''
+'''Use for a socket-interface NXT driver. Command and protocol docs at:
+http://code.google.com/p/nxt-python/wiki/ServerUsage.'''
 
 import nxt.locator
 from nxt.motor import *
@@ -56,6 +57,7 @@ def _process_command(cmd):
         try:
             brick = nxt.locator.find_one_brick()
             brick = brick.connect()
+            retmsg = 'Connected to brick.'
             retcode = 0
         except:
             retcode = 1
@@ -172,7 +174,7 @@ def serve_forever():
         code, message = _process_command(inmsg)
 
         #send return code to the computer that send the request
-        outsock.sendto(str(code) + message + '~', (addr[0], 54374))
+        outsock.sendto(str(code) + message, (addr[0], 54374))
 
         #print a summany of the response
         print 'Send return code '+str(code)+' with message "'+message+'" to '+addr[0]