Merge #19606: Backport wtxid relay to v0.20

d4a1ee8f1d4c46ab726be83965bd86bace2ec1ec Further improve comments around recentRejects (Suhas Daftuar)
f082a13ab756a378b260711a30d363f833a2306a Disconnect peers sending wtxidrelay message after VERACK (Suhas Daftuar)
22effa51a77a8b8c72ba3525cb08dd0cf8464715 test: Use wtxid relay generally in functional tests (Fabian Jahr)
e4816819630d1e94469ca5499361e0cd2c9ac7c2 test: Add tests for wtxid tx relay in segwit test (Fabian Jahr)
6be398b6fb7a7d5c6c1fe6d74a0700b7ff93674e test: Update test framework p2p protocol version to 70016 (Fabian Jahr)
e364b2a2d879e8d30ca9dbc578e4d169b41eb227 Rename AddInventoryKnown() to AddKnownTx() (Suhas Daftuar)
879a3cf2c2367d51310204d21030f3b218582c30 Make TX_WITNESS_STRIPPED its own rejection reason (Suhas Daftuar)
c1d6a1003d601ec4ff7d9507563254b29868182f Delay getdata requests from peers using txid-based relay (Suhas Daftuar)
181ffadd162a84551b3518de77b5dcc08c712425 Add p2p message "wtxidrelay" (Suhas Daftuar)
93826726e76730b061ec4c91d69b2b34ebf98ec9 ignore non-wtxidrelay compliant invs (Anthony Towns)
2599277e9cb51e3619582978cba9bf03325c0cb6 Add support for tx-relay via wtxid (Suhas Daftuar)
be1b7a8916fdd060db56846ad5dcec0894aae314 Add wtxids to recentRejects (Suhas Daftuar)
73845211d16ad1558d84c966ae18e3507fa7dea6 Add wtxids of confirmed transactions to bloom filter (Suhas Daftuar)
606755b840b1560e4f92c9252fa4cab6eacabdd3 Add wtxid-index to orphan map (Suhas Daftuar)
36549376740d28159a5834ecf4ed9eeeeef6715d Add a wtxid-index to mapRelay (Suhas Daftuar)
f7833b5bd894aca2d8820402f4a500d71374ea0e Just pass a hash to AddInventoryKnown (Suhas Daftuar)
4df3d139b7261de33c070691f76a535b8b17433a Add a wtxid-index to the mempool (Suhas Daftuar)

Pull request description:

  We want wtxid relay to be widely deployed before taproot activation, so it should be backported to v0.20.

  The main difference from #18044 is removing the changes to the unbroadcast set (which was only added post-v0.20). The rest is mostly minor rebase conflicts (eg connman changed from a pointer to a reference in master, etc).

  We'll also want to backport #19569 after that's merged.

ACKs for top commit:
  fjahr:
    re-ACK d4a1ee8f1d4c46ab726be83965bd86bace2ec1ec
  instagibbs:
    reACK https://github.com/bitcoin/bitcoin/pull/19606/commits/d4a1ee8f1d4c46ab726be83965bd86bace2ec1ec
  laanwj:
    re-ACK d4a1ee8f1d4c46ab726be83965bd86bace2ec1ec
  hebasto:
    re-ACK d4a1ee8f1d4c46ab726be83965bd86bace2ec1ec, only rebased since my [previous](https://github.com/bitcoin/bitcoin/pull/19606#pullrequestreview-492763028) review:

Tree-SHA512: 1bb8725dd2313a9a03cacf8fb7317986eed3d8d1648fa627528441256c37c793bb0fae6c8c139d05ac45d0c7a86265792834e8e09cbf45286426ca6544c10cd5

1 files changed, 2 insertions, 2 deletions

diff --git a/src/net.h b/src/net.h
index 0dbd5e0549..8822e4e35d 100644
--- a/src/net.h
+++ b/src/net.h
@@ -969,11 +969,11 @@ public:
     }
 
 
-    void AddInventoryKnown(const CInv& inv)
+    void AddKnownTx(const uint256& hash)
     {
         if (m_tx_relay != nullptr) {
             LOCK(m_tx_relay->cs_tx_inventory);
-            m_tx_relay->filterInventoryKnown.insert(inv.hash);
+            m_tx_relay->filterInventoryKnown.insert(hash);
         }
     }