Make protocol checksum validation a configurable option.

Author: evoskuil

data/bn.cfg

@@ -29,6 +29,8 @@ protocol_minimum = 31402
 services = 1
 # The magic number for message headers, defaults to 3652501241 (use 118034699 for testnet).
 identifier = 3652501241
+# Validate the checksum of network messages, defaults to false.
+validate_checksum = false
 # The port for incoming connections, defaults to 8333 (use 18333 for testnet).
 inbound_port = 8333
 # The target number of incoming network connections, defaults to 8.

src/parser.cpp

@@ -192,6 +192,11 @@ options_metadata parser::load_settings()
         value<uint64_t>(&configured.network.services),
         "The services exposed by network connections, defaults to 1 (full node)."
     )
+    (
+        "network.validate_checksum",
+        value<bool>(&configured.network.validate_checksum),
+        "Validate the checksum of network messages, defaults to false."
+    )
     (
         "network.identifier",
         value<uint32_t>(&configured.network.identifier),