bug899343: review fixes.

include/iproto.h

@@ -28,8 +28,8 @@
 #include <tbuf.h> /* for struct tbuf */
 
 enum {
-	/** Maximal iproto package length (2GiB) */
-	IPROTO_LEN_MAX = 2147483648,
+	/** Maximal iproto package body length (2GiB) */
+	IPROTO_BODY_LEN_MAX = 2147483648,
 };
 
 /*

src/iproto.m

@@ -132,9 +132,12 @@ static void iproto_reply(iproto_callback callback, struct tbuf *request)
 static void
 iproto_validate_header(struct iproto_header *header)
 {
-	if (header->len > IPROTO_LEN_MAX) {
-		/* the package has invalid length, close connection */
-		say_error("Invalid iproto package length: %llu",
+	if (header->len > IPROTO_BODY_LEN_MAX) {
+		/*
+		 * The package is too big, just close connection for now to
+		 * avoid DoS.
+		 */
+		say_error("received package is too big: %llu",
 			  (unsigned long long)header->len);
 		tnt_raise(FiberCancelException);
 	}

test/box/iproto.result

@@ -9,13 +9,6 @@
 # sending the package with invalid length
 12
 # checking what is server alive
-show stat
----
-statistics:
-  REPLACE:    { rps:  0    , total:  0           }
-  SELECT:     { rps:  0    , total:  0           }
-  UPDATE:     { rps:  0    , total:  0           }
-  DELETE_1_3: { rps:  0    , total:  0           }
-  DELETE:     { rps:  0    , total:  0           }
-  CALL:       { rps:  0    , total:  0           }
-...
+ping
+ok
+---

test/box/iproto.test

@@ -21,7 +21,7 @@ print "# sending the package with invalid length"
 inval_request = struct.pack('<LLL', 17, 4294967290, 1)
 print s.send(inval_request)
 print "# checking what is server alive"
-exec admin "show stat"
+exec sql "ping"
 
 # closing connection
 s.close()