Be explicit about blocking status.

Apparently the assumption that sockets don't inherit their blocking
status from the server socket is invalid. Or python sets the flags
to match. Either way, we need clients to use blocking sockets so
we're now explicitly setting the blocking status.

gunicorn/worker.py

@@ -97,12 +97,17 @@ class Worker(object):
     def accept(self):
         try:
             client, addr = self.socket.accept()
+            self.init_sock(client)
             self.handle(client, addr)
             self.nr += 1
         except socket.error, e:
             if e[0] not in (errno.EAGAIN, errno.ECONNABORTED):
                 raise
     
+    def init_sock(self, sock):
+        sock.setblocking(1)
+        util.close_on_exec(sock)
+
     def run(self):
         self.init_process()
         self.nr = 0
@@ -145,7 +150,6 @@ class Worker(object):
                 raise
 
     def handle(self, client, addr):
-        util.close_on_exec(client)
         try:
             req = http.Request(client, addr, self.address, self.conf)