[test] Add test for cfheaders

test/functional/test_framework/messages.py

@@ -1516,6 +1516,59 @@ class msg_no_witness_blocktxn(msg_blocktxn):
     def serialize(self):
         return self.block_transactions.serialize(with_witness=False)
 
+class msg_getcfheaders:
+    __slots__ = ("filter_type", "start_height", "stop_hash")
+    msgtype =  b"getcfheaders"
+
+    def __init__(self, filter_type, start_height, stop_hash):
+        self.filter_type = filter_type
+        self.start_height = start_height
+        self.stop_hash = stop_hash
+
+    def deserialize(self, f):
+        self.filter_type = struct.unpack("<B", f.read(1))[0]
+        self.start_height = struct.unpack("<I", f.read(4))[0]
+        self.stop_hash = deser_uint256(f)
+
+    def serialize(self):
+        r = b""
+        r += struct.pack("<B", self.filter_type)
+        r += struct.pack("<I", self.start_height)
+        r += ser_uint256(self.stop_hash)
+        return r
+
+    def __repr__(self):
+        return "msg_getcfheaders(filter_type={:#x}, start_height={}, stop_hash={:x})".format(
+            self.filter_type, self.start_height, self.stop_hash)
+
+class msg_cfheaders:
+    __slots__ = ("filter_type", "stop_hash", "prev_header", "hashes")
+    msgtype =  b"cfheaders"
+
+    def __init__(self, filter_type=None, stop_hash=None, prev_header=None, hashes=None):
+        self.filter_type = filter_type
+        self.stop_hash = stop_hash
+        self.prev_header = prev_header
+        self.hashes = hashes
+
+    def deserialize(self, f):
+        self.filter_type = struct.unpack("<B", f.read(1))[0]
+        self.stop_hash = deser_uint256(f)
+        self.prev_header = deser_uint256(f)
+        self.hashes = deser_uint256_vector(f)
+
+    def serialize(self):
+        r = b""
+        r += struct.pack("<B", self.filter_type)
+        r += ser_uint256(self.stop_hash)
+        r += ser_uint256(self.prev_header)
+        r += ser_uint256_vector(self.hashes)
+        return r
+
+    def __repr__(self):
+        return "msg_cfheaders(filter_type={:#x}, stop_hash={:x})".format(
+            self.filter_type, self.stop_hash)
+
 class msg_getcfcheckpt:
     __slots__ = ("filter_type", "stop_hash")
     msgtype =  b"getcfcheckpt"