Add EOF condition to HTTP_Server state SERVE (#4577)

Author: polybassa

scapy/layers/http.py

@@ -1173,6 +1173,10 @@ def SERVE(self, pkt=None):
         else:
             self.vprint("%s" % pkt.summary())
 
+    @ATMT.eof(SERVE)
+    def serve_eof(self):
+        raise self.CLOSED()
+
     @ATMT.receive_condition(SERVE)
     def new_request(self, pkt):
         raise self.SERVE(pkt)