We now have a server that works... some of the time.

There still seem to be some weird timing and/or closing-related bugs, since
I can't load the eqldata project correctly unless I use --noserver.

server.py

@@ -0,0 +1,43 @@
+import struct, socket, select
+import ssnet, helpers
+from ssnet import SockWrapper, Handler, Proxy, Mux, MuxWrapper
+from helpers import *
+
+
+def main():
+    # synchronization header
+    sys.stdout.write('SSHUTTLE0001')
+    sys.stdout.flush()
+    
+    helpers.logprefix = ' s: '
+    handlers = []
+    mux = Mux(socket.fromfd(sys.stdin.fileno(),
+                            socket.AF_INET, socket.SOCK_STREAM),
+              socket.fromfd(sys.stdout.fileno(),
+                            socket.AF_INET, socket.SOCK_STREAM))
+    handlers.append(mux)
+
+    def new_channel(channel, data):
+        (dstip,dstport) = data.split(',', 1)
+        dstport = int(dstport)
+        outwrap = ssnet.connect_dst(dstip,dstport)
+        handlers.append(Proxy(MuxWrapper(mux, channel), outwrap))
+    
+    mux.new_channel = new_channel
+
+    while mux.ok:
+        r = set()
+        w = set()
+        x = set()
+        handlers = filter(lambda s: s.ok, handlers)
+        for s in handlers:
+            s.pre_select(r,w,x)
+        log('\n')
+        log('Waiting: %d[%d,%d,%d]...\n' 
+            % (len(handlers), len(r), len(w), len(x)))
+        (r,w,x) = select.select(r,w,x)
+        log('r=%r w=%r x=%r\n' % (r,w,x))
+        ready = set(r) | set(w) | set(x)
+        for s in handlers:
+            if s.socks & ready:
+                s.callback()