Introduce a new RPC, `getnetmsgstats` to retrieve traffic bytes and count of messages possibly broken down by: * direction (sent or received) * network (ipv4, tor, etc) * connection type (outbound-full-relay, block-relay-only, etc) * message type (verack, ping, etc) Implements: https://github.com/bitcoin/bitcoin/issues/26337 Add per message stats to getnettotals rpc --- Examples:

bitcoin-cli getnetmsgstats '["direction", "network", "connection_type", "message_type"]'

``` { "bytes": 5392756, "count": 32683 } ```

bitcoin-cli getnetmsgstats '["direction", "network", "connection_type"]'

``` { "sendcmpct": { "bytes": 975, "count": 31 }, "sendaddrv2": { "bytes": 816, "count": 28 }, "headers": { "bytes": 1786, "count": 28 }, "feefilter": { "bytes": 816, "count": 27 }, "version": { "bytes": 4843, "count": 37 }, "ping": { "bytes": 1104, "count": 36 }, "getaddr": { "bytes": 384, "count": 13 }, "block": { "bytes": 5128467, "count": 20365 }, "getheaders": { "bytes": 29436, "count": 28 }, "pong": { "bytes": 1040, "count": 34 }, "getdata": { "bytes": 1218925, "count": 20008 }, "sendheaders": { "bytes": 447, "count": 16 }, "wtxidrelay": { "bytes": 816, "count": 28 }, "addrv2": { "bytes": 301161, "count": 25 }, "verack": { "bytes": 816, "count": 28 } } ```

bitcoin-cli getnetmsgstats '["direction", "connection_type", "message_type"]'

``` { "i2p": { "bytes": 1311861, "count": 8226 }, "onion": { "bytes": 3932760, "count": 24272 }, "ipv6": { "bytes": 631265, "count": 3362 }, "ipv4": { "bytes": 1300106, "count": 7773 } } ```

bitcoin-cli getnetmsgstats

``` { "recv": { "i2p": { "manual": { "sendcmpct": { "bytes": 90, "count": 3 }, "sendaddrv2": { "bytes": 99, "count": 3 }, "headers": { "bytes": 309, "count": 3 }, "feefilter": { "bytes": 87, "count": 3 }, "version": { "bytes": 408, "count": 3 }, "ping": { "bytes": 87, "count": 3 }, "block": { "bytes": 432950, "count": 1794 }, "getheaders": { "bytes": 3150, "count": 3 }, "pong": { "bytes": 87, "count": 3 }, "wtxidrelay": { "bytes": 99, "count": 3 }, "addrv2": { "bytes": 68508, "count": 3 }, "verack": { "bytes": 99, "count": 3 } } }, "onion": { "block-relay-only": { "sendcmpct": { "bytes": 66, "count": 2 }, "sendaddrv2": { "bytes": 24, "count": 1 }, "headers": { "bytes": 106, "count": 1 }, "feefilter": { "bytes": 32, "count": 1 }, "version": { "bytes": 126, "count": 1 }, "ping": { "bytes": 64, "count": 2 }, "block": { "bytes": 478479, "count": 1896 }, "getheaders": { "bytes": 1053, "count": 1 }, "pong": { "bytes": 64, "count": 2 }, "sendheaders": { "bytes": 24, "count": 1 }, "wtxidrelay": { "bytes": 24, "count": 1 }, "verack": { "bytes": 24, "count": 1 } }, "outbound-full-relay": { "sendcmpct": { "bytes": 195, "count": 6 }, "sendaddrv2": { "bytes": 129, "count": 5 }, "headers": { "bytes": 527, "count": 5 }, "feefilter": { "bytes": 157, "count": 5 }, "version": { "bytes": 639, "count": 5 }, "ping": { "bytes": 189, "count": 6 }, "block": { "bytes": 1465688, "count": 5957 }, "getheaders": { "bytes": 5262, "count": 5 }, "pong": { "bytes": 189, "count": 6 }, "sendheaders": { "bytes": 24, "count": 1 }, "wtxidrelay": { "bytes": 129, "count": 5 }, "addrv2": { "bytes": 120693, "count": 9 }, "verack": { "bytes": 129, "count": 5 } } }, "ipv6": { "manual": { "sendcmpct": { "bytes": 120, "count": 4 }, "sendaddrv2": { "bytes": 132, "count": 4 }, "headers": { "bytes": 412, "count": 4 }, "feefilter": { "bytes": 116, "count": 4 }, "version": { "bytes": 544, "count": 4 }, "ping": { "bytes": 116, "count": 4 }, "block": { "bytes": 138074, "count": 583 }, "getheaders": { "bytes": 4200, "count": 4 }, "pong": { "bytes": 116, "count": 4 }, "wtxidrelay": { "bytes": 132, "count": 4 }, "addrv2": { "bytes": 93436, "count": 4 }, "verack": { "bytes": 132, "count": 4 } }, "outbound-full-relay": { "version": { "bytes": 126, "count": 1 } } }, "ipv4": { "outbound-full-relay": { "sendcmpct": { "bytes": 66, "count": 2 }, "sendaddrv2": { "bytes": 24, "count": 1 }, "headers": { "bytes": 106, "count": 1 }, "feefilter": { "bytes": 32, "count": 1 }, "version": { "bytes": 252, "count": 2 }, "ping": { "bytes": 32, "count": 1 }, "block": { "bytes": 313988, "count": 1255 }, "getheaders": { "bytes": 1053, "count": 1 }, "pong": { "bytes": 32, "count": 1 }, "sendheaders": { "bytes": 24, "count": 1 }, "wtxidrelay": { "bytes": 24, "count": 1 }, "addrv2": { "bytes": 40, "count": 1 }, "verack": { "bytes": 24, "count": 1 } } } }, "sent": { "i2p": { "manual": { "sendcmpct": { "bytes": 90, "count": 3 }, "sendaddrv2": { "bytes": 99, "count": 3 }, "headers": { "bytes": 66, "count": 3 }, "feefilter": { "bytes": 87, "count": 3 }, "version": { "bytes": 544, "count": 4 }, "ping": { "bytes": 87, "count": 3 }, "getaddr": { "bytes": 99, "count": 3 }, "getheaders": { "bytes": 3150, "count": 3 }, "pong": { "bytes": 87, "count": 3 }, "getdata": { "bytes": 105382, "count": 1789 }, "sendheaders": { "bytes": 99, "count": 3 }, "wtxidrelay": { "bytes": 99, "count": 3 }, "verack": { "bytes": 99, "count": 3 } } }, "onion": { "block-relay-only": { "sendcmpct": { "bytes": 33, "count": 1 }, "sendaddrv2": { "bytes": 24, "count": 1 }, "headers": { "bytes": 25, "count": 1 }, "version": { "bytes": 127, "count": 1 }, "ping": { "bytes": 64, "count": 2 }, "getheaders": { "bytes": 1053, "count": 1 }, "pong": { "bytes": 64, "count": 2 }, "getdata": { "bytes": 115932, "count": 1884 }, "sendheaders": { "bytes": 24, "count": 1 }, "wtxidrelay": { "bytes": 24, "count": 1 }, "verack": { "bytes": 24, "count": 1 } }, "outbound-full-relay": { "sendcmpct": { "bytes": 162, "count": 5 }, "sendaddrv2": { "bytes": 129, "count": 5 }, "headers": { "bytes": 122, "count": 5 }, "feefilter": { "bytes": 157, "count": 5 }, "version": { "bytes": 771, "count": 6 }, "ping": { "bytes": 221, "count": 7 }, "getaddr": { "bytes": 129, "count": 5 }, "getheaders": { "bytes": 5262, "count": 5 }, "pong": { "bytes": 189, "count": 6 }, "getdata": { "bytes": 363478, "count": 5932 }, "sendheaders": { "bytes": 129, "count": 5 }, "wtxidrelay": { "bytes": 129, "count": 5 }, "addrv2": { "bytes": 231, "count": 4 }, "verack": { "bytes": 129, "count": 5 } } }, "ipv6": { "manual": { "sendcmpct": { "bytes": 120, "count": 4 }, "sendaddrv2": { "bytes": 132, "count": 4 }, "headers": { "bytes": 88, "count": 4 }, "feefilter": { "bytes": 116, "count": 4 }, "version": { "bytes": 544, "count": 4 }, "ping": { "bytes": 116, "count": 4 }, "getaddr": { "bytes": 132, "count": 4 }, "getheaders": { "bytes": 4200, "count": 4 }, "pong": { "bytes": 116, "count": 4 }, "getdata": { "bytes": 35492, "count": 584 }, "sendheaders": { "bytes": 99, "count": 3 }, "wtxidrelay": { "bytes": 132, "count": 4 }, "verack": { "bytes": 132, "count": 4 } }, "outbound-full-relay": { "version": { "bytes": 254, "count": 2 } } }, "ipv4": { "outbound-full-relay": { "sendcmpct": { "bytes": 33, "count": 1 }, "sendaddrv2": { "bytes": 24, "count": 1 }, "headers": { "bytes": 25, "count": 1 }, "feefilter": { "bytes": 32, "count": 1 }, "version": { "bytes": 508, "count": 4 }, "ping": { "bytes": 32, "count": 1 }, "getaddr": { "bytes": 24, "count": 1 }, "getheaders": { "bytes": 1053, "count": 1 }, "pong": { "bytes": 32, "count": 1 }, "getdata": { "bytes": 76531, "count": 1231 }, "sendheaders": { "bytes": 24, "count": 1 }, "wtxidrelay": { "bytes": 24, "count": 1 }, "verack": { "bytes": 24, "count": 1 } } } } } ```

--- Previous incarnations of this: https://github.com/bitcoin/bitcoin/pull/27534 rpc: add 'getnetmsgstats', new rpc to view network message statistics (Thank you, @satsie!) https://github.com/bitcoin/bitcoin/pull/28926 rpc: add 'getnetmsgstats' RPC (Thank you, @willcl-ark!)

rpc: provide per message stats for global traffic via new RPC 'getnetmsgstats'