From ef1abfa913498e02a4ece3be4be45d2f03e47d05 Mon Sep 17 00:00:00 2001
From: rcoh <rcoh@mit.edu>
Date: Fri, 28 Jan 2011 15:19:21 -0500
Subject: Lots of stuff INCOMPLETE

---
 util/NetworkOps.py        |  6 ++++++
 util/PacketComposition.py | 15 ++++++++++++---
 2 files changed, 18 insertions(+), 3 deletions(-)

(limited to 'util')

diff --git a/util/NetworkOps.py b/util/NetworkOps.py
index 8894b78..3ece763 100644
--- a/util/NetworkOps.py
+++ b/util/NetworkOps.py
@@ -8,3 +8,9 @@ def getConnectedSocket(ip,port):
     except Exception as inst:
         main_log.error('Network down.  All network based renderers and sensors will not function.',
             inst)
+
+def getBroadcastSocket(port):
+    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+    s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
+    return s
diff --git a/util/PacketComposition.py b/util/PacketComposition.py
index 7b4fe95..75ef917 100644
--- a/util/PacketComposition.py
+++ b/util/PacketComposition.py
@@ -5,7 +5,7 @@ PORTOUT = 0x0108
 UNI = 0
 import pdb
 import util.TimeOps as timeops
-argDict = {'flags': 0, 'startcode': 0, 'pad':0}
+argDict = {'flags': 0, 'startcode': 0x0fff, 'pad':0}
 
 def composePixelStripData(pixelStrip,currentTime=timeops.time()):
     packet = bytearray()
@@ -33,10 +33,10 @@ def memoize(f):
 def cachePacketHeader(port):
     packet = bytearray()
     subDict = dict(argDict)
-    subDict['len'] = 38500 #I have no idea why this works.
+    subDict['len'] = 150 #I have no idea why this works.
     subDict['port'] = port
     packet.extend(portOutPacket(subDict))
-    packet.append(0x0)
+#    packet.append(0x0)
     return packet
 
 def composePixelStripPacket(pixelStrip,port, currentTime):
@@ -61,10 +61,19 @@ def portOut():
 def portOutPayload(argDict):
     payload = bytearray()
     payload.extend(struct.pack('B', argDict['port']))
+    payload.extend(struct.pack('B',0))
     payload.extend(struct.pack('H', argDict['flags']))
     payload.extend(struct.pack('H', argDict['len']))
     payload.extend(struct.pack('H', argDict['startcode']))
     return payload
+def composeSynchPacket():
+    header = bytearray()
+    header.extend(struct.pack('L', MAGIC))
+    header.extend(struct.pack('H', VERSION))
+    header.extend(struct.pack('H', 0x0109))
+    header.extend(struct.pack('L', 0))
+    header.extend(struct.pack('L', 0))
+    return header
 
 def portOutPacket(payloadArgs):
     packet = bytearray()
-- 
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