Protocol: interface redesign.

Every function is a stub now. Reimplementaion coming up.

Signed-off-by: Ramūnas Mažeikis <ramunasnezinomas@gmail.com>

1 files changed, 14 insertions, 31 deletions

diff --git a/include/protocol.h b/include/protocol.h
index 8d5c535..d8f395d 100644
--- a/include/protocol.h
+++ b/include/protocol.h
@@ -23,9 +23,9 @@
 
 #include <errno.h>
 
-#define	E_TLV_OVERFLOW	        (1 << 0)
-#define E_UNKNOWN_TYPE	        (1 << 1)
-#define E_IVALID_DESCRIPTOR     (1 << 2)
+#define	E_TLV_OVERFLOW		(1 << 0)
+#define E_UNKNOWN_TYPE		(1 << 1)
+#define E_IVALID_DESCRIPTOR	(1 << 2)
 
 /**
  * Regular packets contain tlv's defined by tlv_type.
@@ -41,11 +41,6 @@ enum packet_type {
 };
 
 /**
- * Connection descriptor.
- */
-typedef unsigned int cd_t;
-
-/**
  * Message sequence number since beggining of sesssion.
  *
  * Mainly used for identifying lost messages.
@@ -86,10 +81,13 @@ enum tlv_type {
 /**
  * Packet data itself is a special type of tlv. A packet is either regular,
  * hearbeat or discovery.
+ *
+ * May be used to send data.
  */
-struct packet_data {
+struct tlv_packet {
 	enum packet_type type;
 	size_t packet_size;
+	size_t offset;
 	char *data;	/* Bytes representing tlv's */
 };
 
@@ -102,33 +100,18 @@ struct tlv {
 	void *data;
 };
 
-/**
- * Reads last packets received, parses and stores them to be later retreived
- * via get_tlv.
- * */
-int get_last_data(cd_t connection);
-
-/** Returns tlv's parsed by get_last_data. Returned tlv is only valid until
- * next call to get_tlv.
- * */
-struct tlv * get_tlv(cd_t cd);
+struct tlv_parser {
+	char *data;
+	size_t offset;
+	size_t size;
+};
 
-/**
- * Any modifications made to the pending outgoing packet are nullified.
- * */
-int clear_data(cd_t connection);
+int get_tlv(struct tlv_parser *parser, struct tlv *ret);
 
 /**
  * Appends data to the next packet to be sent. Type of data is determined by
  * enum tlv_type.
  * */
-int push_data(cd_t connection, const char *data, enum tlv_type);
-
-/**
- * Sends packet towards the other end.
- * */
-int flush_data(cd_t connection);
-
-cd_t protocol_init(void);
+int push_tlv(struct tlv_packet *packet, const char *data, enum tlv_type);
 
 #endif /* PROTOCOL_H_INCLUDED */