Merge bitcoin/bitcoin#29421: net: make the list of known message types a compile time constant

b3efb48 protocol: make message types constexpr (Vasil Dimov)
2fa9de0 net: make the list of known message types a compile time constant (Vasil Dimov)

Pull request description:

  Turn the `std::vector` to `std::array` because it is cheaper and allows us to have the number of the messages as a compile time constant: `ALL_NET_MESSAGE_TYPES.size()` which can be used in future code to build other `std::array`s with that size.

  ---

  This change is part of bitcoin/bitcoin#29418 but it makes sense on its own and would be good to have it, regardless of the fate of bitcoin/bitcoin#29418. Also, if this is merged, that would reduce the size of bitcoin/bitcoin#29418, thus the current standalone PR.

ACKs for top commit:
  achow101:
    ACK b3efb48
  jonatack:
    ACK b3efb48
  maflcko:
    utACK b3efb48 🎊
  willcl-ark:
    ACK b3efb48

Tree-SHA512: 6d3860c138c64514ebab13d97ea67893e2d346dfac30a48c3d9bc769a1970407375ea4170afdb522411ced306a14a9af4eede99e964d1fb1ea3efff5d5eb57af

Author: achow101

src/net.cpp

@@ -3736,8 +3736,9 @@ CNode::CNode(NodeId idIn,
 {
     if (inbound_onion) assert(conn_type_in == ConnectionType::INBOUND);
 
-    for (const std::string &msg : getAllNetMessageTypes())
+    for (const auto& msg : ALL_NET_MESSAGE_TYPES) {
         mapRecvBytesPerMsgType[msg] = 0;
+    }
     mapRecvBytesPerMsgType[NET_MESSAGE_TYPE_OTHER] = 0;
 
     if (fLogIPs) {

src/protocol.cpp

@@ -7,87 +7,6 @@
 
 #include <common/system.h>
 
-#include <atomic>
-
-namespace NetMsgType {
-const char* VERSION = "version";
-const char* VERACK = "verack";
-const char* ADDR = "addr";
-const char* ADDRV2 = "addrv2";
-const char* SENDADDRV2 = "sendaddrv2";
-const char* INV = "inv";
-const char* GETDATA = "getdata";
-const char* MERKLEBLOCK = "merkleblock";
-const char* GETBLOCKS = "getblocks";
-const char* GETHEADERS = "getheaders";
-const char* TX = "tx";
-const char* HEADERS = "headers";
-const char* BLOCK = "block";
-const char* GETADDR = "getaddr";
-const char* MEMPOOL = "mempool";
-const char* PING = "ping";
-const char* PONG = "pong";
-const char* NOTFOUND = "notfound";
-const char* FILTERLOAD = "filterload";
-const char* FILTERADD = "filteradd";
-const char* FILTERCLEAR = "filterclear";
-const char* SENDHEADERS = "sendheaders";
-const char* FEEFILTER = "feefilter";
-const char* SENDCMPCT = "sendcmpct";
-const char* CMPCTBLOCK = "cmpctblock";
-const char* GETBLOCKTXN = "getblocktxn";
-const char* BLOCKTXN = "blocktxn";
-const char* GETCFILTERS = "getcfilters";
-const char* CFILTER = "cfilter";
-const char* GETCFHEADERS = "getcfheaders";
-const char* CFHEADERS = "cfheaders";
-const char* GETCFCHECKPT = "getcfcheckpt";
-const char* CFCHECKPT = "cfcheckpt";
-const char* WTXIDRELAY = "wtxidrelay";
-const char* SENDTXRCNCL = "sendtxrcncl";
-} // namespace NetMsgType
-
-/** All known message types. Keep this in the same order as the list of
- * messages above and in protocol.h.
- */
-const static std::vector<std::string> g_all_net_message_types{
-    NetMsgType::VERSION,
-    NetMsgType::VERACK,
-    NetMsgType::ADDR,
-    NetMsgType::ADDRV2,
-    NetMsgType::SENDADDRV2,
-    NetMsgType::INV,
-    NetMsgType::GETDATA,
-    NetMsgType::MERKLEBLOCK,
-    NetMsgType::GETBLOCKS,
-    NetMsgType::GETHEADERS,
-    NetMsgType::TX,
-    NetMsgType::HEADERS,
-    NetMsgType::BLOCK,
-    NetMsgType::GETADDR,
-    NetMsgType::MEMPOOL,
-    NetMsgType::PING,
-    NetMsgType::PONG,
-    NetMsgType::NOTFOUND,
-    NetMsgType::FILTERLOAD,
-    NetMsgType::FILTERADD,
-    NetMsgType::FILTERCLEAR,
-    NetMsgType::SENDHEADERS,
-    NetMsgType::FEEFILTER,
-    NetMsgType::SENDCMPCT,
-    NetMsgType::CMPCTBLOCK,
-    NetMsgType::GETBLOCKTXN,
-    NetMsgType::BLOCKTXN,
-    NetMsgType::GETCFILTERS,
-    NetMsgType::CFILTER,
-    NetMsgType::GETCFHEADERS,
-    NetMsgType::CFHEADERS,
-    NetMsgType::GETCFCHECKPT,
-    NetMsgType::CFCHECKPT,
-    NetMsgType::WTXIDRELAY,
-    NetMsgType::SENDTXRCNCL,
-};
-
 CMessageHeader::CMessageHeader(const MessageStartChars& pchMessageStartIn, const char* pszCommand, unsigned int nMessageSizeIn)
     : pchMessageStart{pchMessageStartIn}
 {
@@ -164,11 +83,6 @@ std::string CInv::ToString() const
     }
 }
 
-const std::vector<std::string> &getAllNetMessageTypes()
-{
-    return g_all_net_message_types;
-}
-
 /**
  * Convert a service flag (NODE_*) to a human readable string.
  * It supports unknown service flags which will be returned as "UNKNOWN[...]".