#define LOG(kind,...) GNUNET_log_from (kind,"regex-bck",__VA_ARGS__)
+GNUNET_NETWORK_STRUCT_BEGIN
+
+/**
+ * @brief Block to announce a regex state.
+ */
+struct RegexBlock
+{
+
+ /**
+ * Length of the proof regex string.
+ */
+ uint16_t proof_len GNUNET_PACKED;
+
+ /**
+ * Is this state an accepting state?
+ */
+ int16_t is_accepting GNUNET_PACKED;
+
+ /**
+ * Numer of edges parting from this state.
+ */
+ uint32_t n_edges GNUNET_PACKED;
+
+ /* char proof[n_proof] */
+ /* struct RegexEdge edges[n_edges] */
+};
+
+
+/**
+ * @brief A RegexBlock contains one or more of this struct in the payload.
+ */
+struct RegexEdge
+{
+ /**
+ * Destination of this edge.
+ */
+ struct GNUNET_HashCode key;
+
+ /**
+ * Length of the token towards the new state.
+ */
+ uint32_t n_token GNUNET_PACKED;
+
+ /* char token[n_token] */
+};
+
+
+GNUNET_NETWORK_STRUCT_END
+
+
+/**
+ * Test if this block is marked as being an accept state.
+ *
+ * @param block block to test
+ * @return GNUNET_YES if the block is accepting, GNUNET_NO if not
+ */
+int
+GNUNET_BLOCK_is_accepting (const struct RegexBlock *block)
+{
+ return ntohs (block->is_accepting);
+}
+
/**
* Check if the given 'proof' matches the given 'key'.