Merge #20171: Add functional test test_txid_inv_delay

bc4a23008762702ffcd6868bcdb8fe2a732640ba Remove redundant p2p lock tacking for tx download functional tests (Antoine Riard)
d3b5eac9a989878e2e09e5fde71c49149b123f18 Add mutation for functional test test_preferred_inv (Antoine Riard)
06efb3163cdf30e74df3f78afc4896b0f55ce937 Add functional test test_txid_inv_delay (Antoine Riard)
a07910abcd580ed07187794cf0e1faf040bb4212 test: Makes wtxidrelay support a generic P2PInterface option (Antoine Riard)

Pull request description:

  This is a simple functional test to increase coverage of #19988, checking that txid announcements from txid-relay peers are delayed by TXID_RELAY_DELAY, assuming we have at least another wtxid-relay peer.

  You can verify new test with the following diff :

  ```
  diff --git a/src/net_processing.cpp b/src/net_processing.cpp
  index f14db379f..2a2805df5 100644
  --- a/src/net_processing.cpp
  +++ b/src/net_processing.cpp
  @@ -773,7 +773,7 @@ void PeerManager::AddTxAnnouncement(const CNode& node, const GenTxid& gtxid, std
       auto delay = std::chrono::microseconds{0};
       const bool preferred = state->fPreferredDownload;
       if (!preferred) delay += NONPREF_PEER_TX_DELAY;
  -    if (!gtxid.IsWtxid() && g_wtxid_relay_peers > 0) delay += TXID_RELAY_DELAY;
  +    //if (!gtxid.IsWtxid() && g_wtxid_relay_peers > 0) delay += TXID_RELAY_DELAY;
       const bool overloaded = !node.HasPermission(PF_RELAY) &&
           m_txrequest.CountInFlight(nodeid) >= MAX_PEER_TX_REQUEST_IN_FLIGHT;
       if (overloaded) delay += OVERLOADED_PEER_TX_DELAY;
  ```

ACKs for top commit:
  laanwj:
    ACK bc4a23008762702ffcd6868bcdb8fe2a732640ba

Tree-SHA512: 150e806bc5289feda94738756ab375c7fdd23c80c12bd417d3112043e26a91a717dc325a01079ebd02a88b90975ead5bd397ec86eb745c7870ebec379a8aa711

1 files changed, 5 insertions, 2 deletions

diff --git a/test/functional/test_framework/p2p.py b/test/functional/test_framework/p2p.py
index 8b79a4dc2f..ea769ddfa2 100755
--- a/test/functional/test_framework/p2p.py
+++ b/test/functional/test_framework/p2p.py
@@ -289,7 +289,7 @@ class P2PInterface(P2PConnection):
 
     Individual testcases should subclass this and override the on_* methods
     if they want to alter message handling behaviour."""
-    def __init__(self, support_addrv2=False):
+    def __init__(self, support_addrv2=False, wtxidrelay=True):
         super().__init__()
 
         # Track number of messages of each type received.
@@ -309,6 +309,9 @@ class P2PInterface(P2PConnection):
 
         self.support_addrv2 = support_addrv2
 
+        # If the peer supports wtxid-relay
+        self.wtxidrelay = wtxidrelay
+
     def peer_connect(self, *args, services=NODE_NETWORK|NODE_WITNESS, send_version=True, **kwargs):
         create_conn = super().peer_connect(*args, **kwargs)
 
@@ -394,7 +397,7 @@ class P2PInterface(P2PConnection):
 
     def on_version(self, message):
         assert message.nVersion >= MIN_VERSION_SUPPORTED, "Version {} received. Test framework only supports versions greater than {}".format(message.nVersion, MIN_VERSION_SUPPORTED)
-        if message.nVersion >= 70016:
+        if message.nVersion >= 70016 and self.wtxidrelay:
             self.send_message(msg_wtxidrelay())
         if self.support_addrv2:
             self.send_message(msg_sendaddrv2())