+int Client_voiceMsg(client_t *client, uint8_t *data, int len);
+void recheckCodecVersions(client_t *connectingClient);
+void Client_codec_add(client_t *client, int codec);
+void Client_codec_free(client_t *client);
+codec_t *Client_codec_iterate(client_t *client, codec_t **codec_itr);
+void Client_textmessage(client_t *client, const char *text);
+bool_t Client_token_match(client_t *client, char const *str);
+void Client_token_free(client_t *client);
+void Client_token_add(client_t *client, char *token_string);
+
+/**
+ * Retrieve the client that matches the given session ID.
+ * Returns NULL if there's no such client.
+ */
+client_t *Client_find_by_session(int session_id);