Add bootstrap node, listen method

1 files changed, 42 insertions, 0 deletions

diff --git a/include/sibs/PubsubKey.hpp b/include/sibs/PubsubKey.hpp
new file mode 100644
index 0000000..d123331
--- /dev/null
+++ b/include/sibs/PubsubKey.hpp
@@ -0,0 +1,42 @@
+#pragma once
+
+#include "../types.hpp"
+#include <array>
+#include <unordered_map>
+
+namespace sibs
+{
+    const usize PUBSUB_KEY_LENGTH = 32;
+    
+    // Source: https://stackoverflow.com/a/11414104 (public license)
+    static size_t fnvHash(const unsigned char *key, int len)
+    {
+        size_t h = 2166136261;
+        for (int i = 0; i < len; i++)
+            h = (h * 16777619) ^ key[i];
+        return h;
+    }
+    
+    class PubsubKey
+    {
+    public:
+        PubsubKey();
+        // Create pubsub key from existing data, data will be cutoff at PUBSUB_KEY_LENGTH. If @size is less than PUBSUB_KEY_LENGTH then data is appended with 0
+        PubsubKey(const void *data, const usize size);
+        bool operator == (const PubsubKey &other) const;
+        bool operator != (const PubsubKey &other) const;
+
+        std::array<u8, PUBSUB_KEY_LENGTH> data;
+    };
+    
+    struct PubsubKeyHasher
+    {
+        size_t operator()(const PubsubKey &pubsubKey) const
+        {
+            return fnvHash((const unsigned char*)pubsubKey.data.data(), PUBSUB_KEY_LENGTH);
+        }
+    };
+    
+    template <typename ValueType>
+    using PubsubKeyMap = std::unordered_map<PubsubKey, ValueType, PubsubKeyHasher>;
+}