todo update, forward block broadcasts, optional echo connect

include/constants.h

@@ -12,6 +12,7 @@
 // Nets
 #define MAX_CONS 32 // Some baseline for now
 #define LISTEN_PORT 9393
+#define ECHO_PEERS 1 // If non-zero, automatically attempt to connect back to any inbound peers (helps form bidirectional peering)
 #define TCP_THREAD_STACK_SIZE (512 * 1024) // 512 KB. We could get away with like 128 KB since it's mostly just recv bufs, but it's good having some breathing room.
                                            // This is also for client threads. The server has the default (~8 MB on POSIX).