test: Add basic test for BIP 37

test/functional/test_framework/messages.py

@@ -51,6 +51,7 @@ NODE_NETWORK_LIMITED = (1 << 10)
 
 MSG_TX = 1
 MSG_BLOCK = 2
+MSG_FILTERED_BLOCK = 3
 MSG_WITNESS_FLAG = 1 << 30
 MSG_TYPE_MASK = 0xffffffff >> 2
 
@@ -225,10 +226,11 @@ class CInv:
 
     typemap = {
         0: "Error",
-        1: "TX",
-        2: "Block",
-        1|MSG_WITNESS_FLAG: "WitnessTx",
-        2|MSG_WITNESS_FLAG : "WitnessBlock",
+        MSG_TX: "TX",
+        MSG_BLOCK: "Block",
+        MSG_TX | MSG_WITNESS_FLAG: "WitnessTx",
+        MSG_BLOCK | MSG_WITNESS_FLAG: "WitnessBlock",
+        MSG_FILTERED_BLOCK: "filtered Block",
         4: "CompactBlock"
     }
 
@@ -1318,6 +1320,41 @@ class msg_headers:
         return "msg_headers(headers=%s)" % repr(self.headers)
 
 
+class msg_merkleblock:
+    command = b"merkleblock"
+
+    def deserialize(self, f):
+        pass  # Placeholder for now
+
+
+class msg_filterload:
+    __slots__ = ("data", "nHashFuncs", "nTweak", "nFlags")
+    command = b"filterload"
+
+    def __init__(self, data=b'00', nHashFuncs=0, nTweak=0, nFlags=0):
+        self.data = data
+        self.nHashFuncs = nHashFuncs
+        self.nTweak = nTweak
+        self.nFlags = nFlags
+
+    def deserialize(self, f):
+        self.data = deser_string(f)
+        self.nHashFuncs = struct.unpack("<I", f.read(4))[0]
+        self.nTweak = struct.unpack("<I", f.read(4))[0]
+        self.nFlags = struct.unpack("<B", f.read(1))[0]
+
+    def serialize(self):
+        r = b""
+        r += ser_string(self.data)
+        r += struct.pack("<I", self.nHashFuncs)
+        r += struct.pack("<I", self.nTweak)
+        r += struct.pack("<B", self.nFlags)
+        return r
+
+    def __repr__(self):
+        return "msg_filterload(data={}, nHashFuncs={}, nTweak={}, nFlags={})".format(
+            self.data, self.nHashFuncs, self.nTweak, self.nFlags)
+
 
 class msg_feefilter:
     __slots__ = ("feerate",)