--Client
netmsg.Listen("TestMsg", function()
    local whatever = netmsg.ReadString()
    local s = netmsg.ReadShort()
    local l = netmsg.ReadLong()
    System:Print(("RECEIVED TESTMSG WOOO! String: %s | Short: %d | Long: %d"):format(whatever, s, l))
    local fl = netmsg.ReadFloat()
    System:Print(string.format("Float: %f", fl))
    local v3 = netmsg.ReadVec3()
    System:Print(string.format("Vec3: %f | %f | %f", v3.x, v3.y, v3.z))
end)

--Server
netmsg.Register("TestMsg") --Works if you forget this, but at a very minor performance penalty because it has to add to the masg name-to-short stack.
concommand.Register("testmsg", function()
    netmsg.Start("TestMsg")
        netmsg.WriteString("Hi")
        netmsg.WriteShort(-23)
        netmsg.WriteLong(12344321)
        netmsg.WriteFloat(32.7)
        netmsg.WriteVec3(Vec3(1.2, 3.4, 5.6))
    netmsg.Broadcast()
end)