network.py: reorder bitcoin core error msg whitelist

test policy.cpp strings last as some of them are short and too generic

fixes https://github.com/spesmilo/electrum/issues/7483

electrum/network.py

@@ -907,27 +907,7 @@ class Network(Logger, NetworkRetryManager[ServerAddr]):
         # server_msg is untrusted input so it should not be shown to the user. see #4968
         server_msg = str(server_msg)
         server_msg = server_msg.replace("\n", r"\n")
-        # https://github.com/bitcoin/bitcoin/blob/5bb64acd9d3ced6e6f95df282a1a0f8b98522cb0/src/policy/policy.cpp
+
-        # grep "reason ="
-        policy_error_messages = {
-            r"version": _("Transaction uses non-standard version."),
-            r"tx-size": _("The transaction was rejected because it is too large (in bytes)."),
-            r"scriptsig-size": None,
-            r"scriptsig-not-pushonly": None,
-            r"scriptpubkey":
-                ("scriptpubkey\n" +
-                 _("Some of the outputs pay to a non-standard script.")),
-            r"bare-multisig": None,
-            r"dust":
-                (_("Transaction could not be broadcast due to dust outputs.\n"
-                   "Some of the outputs are too small in value, probably lower than 1000 satoshis.\n"
-                   "Check the units, make sure you haven't confused e.g. mBTC and BTC.")),
-            r"multi-op-return": _("The transaction was rejected because it contains multiple OP_RETURN outputs."),
-        }
-        for substring in policy_error_messages:
-            if substring in server_msg:
-                msg = policy_error_messages[substring]
-                return msg if msg else substring
         # https://github.com/bitcoin/bitcoin/blob/5bb64acd9d3ced6e6f95df282a1a0f8b98522cb0/src/script/script_error.cpp
         script_error_messages = {
             r"Script evaluated without error but finished with a false/empty top stack element",
@@ -989,7 +969,7 @@ class Network(Logger, NetworkRetryManager[ServerAddr]):
         # https://github.com/bitcoin/bitcoin/blob/5bb64acd9d3ced6e6f95df282a1a0f8b98522cb0/src/validation.cpp
         # grep "REJECT_"
         # grep "TxValidationResult"
-        # should come after script_error.cpp (due to e.g. non-mandatory-script-verify-flag)
+        # should come after script_error.cpp (due to e.g. "non-mandatory-script-verify-flag")
         validation_error_messages = {
             r"coinbase": None,
             r"tx-size-small": None,
@@ -1071,6 +1051,29 @@ class Network(Logger, NetworkRetryManager[ServerAddr]):
             if substring in server_msg:
                 msg = tx_verify_error_messages[substring]
                 return msg if msg else substring
+        # https://github.com/bitcoin/bitcoin/blob/5bb64acd9d3ced6e6f95df282a1a0f8b98522cb0/src/policy/policy.cpp
+        # grep "reason ="
+        # should come after validation.cpp (due to "tx-size" vs "tx-size-small")
+        # should come after script_error.cpp (due to e.g. "version")
+        policy_error_messages = {
+            r"version": _("Transaction uses non-standard version."),
+            r"tx-size": _("The transaction was rejected because it is too large (in bytes)."),
+            r"scriptsig-size": None,
+            r"scriptsig-not-pushonly": None,
+            r"scriptpubkey":
+                ("scriptpubkey\n" +
+                 _("Some of the outputs pay to a non-standard script.")),
+            r"bare-multisig": None,
+            r"dust":
+                (_("Transaction could not be broadcast due to dust outputs.\n"
+                   "Some of the outputs are too small in value, probably lower than 1000 satoshis.\n"
+                   "Check the units, make sure you haven't confused e.g. mBTC and BTC.")),
+            r"multi-op-return": _("The transaction was rejected because it contains multiple OP_RETURN outputs."),
+        }
+        for substring in policy_error_messages:
+            if substring in server_msg:
+                msg = policy_error_messages[substring]
+                return msg if msg else substring
         # otherwise:
         return _("Unknown error")