X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=utcp_priv.h;h=69f1b0da5347371649da4dbaa92973cfed0617eb;hb=dbf1826ad6a60a81c7e5962315c95228c5757ac7;hp=d8f65546dcd810f9d6fe33259dbda4578e5a89b9;hpb=f4c52312544ee99bcce46ebcfc0c8e6ac6356fd5;p=utcp

diff --git a/utcp_priv.h b/utcp_priv.h
index d8f6554..69f1b0d 100644
--- a/utcp_priv.h
+++ b/utcp_priv.h
@@ -30,8 +30,11 @@
 #define FIN 4
 #define RST 8
 
+#define NSACKS 4
 #define DEFAULT_SNDBUFSIZE 4096
 #define DEFAULT_MAXSNDBUFSIZE 131072
+#define DEFAULT_RCVBUFSIZE 0
+#define DEFAULT_MAXRCVBUFSIZE 131072
 
 struct hdr {
 	uint16_t src; // Source port
@@ -71,6 +74,18 @@ static const char *strstate[] __attribute__((unused)) = {
 	[TIME_WAIT] = "TIME_WAIT"
 };
 
+struct buffer {
+	char *data;
+	uint32_t used;
+	uint32_t size;
+	uint32_t maxsize;
+};
+
+struct sack {
+	uint32_t offset;
+	uint32_t len;
+};
+
 struct utcp_connection {
 	void *priv;
 	struct utcp *utcp;
@@ -80,6 +95,7 @@ struct utcp_connection {
 	// Callbacks
 
 	utcp_recv_t recv;
+	utcp_poll_t poll;
 
 	// TCP State
 
@@ -110,11 +126,11 @@ struct utcp_connection {
 	struct timeval conn_timeout;
 	struct timeval rtrx_timeout;
 
-	// Send buffer
+	// Buffers
 
-	char *sndbuf;
-	uint32_t sndbufsize;
-	uint32_t maxsndbufsize;
+	struct buffer sndbuf;
+	struct buffer rcvbuf;
+	struct sack sacks[NSACKS];
 
 	// Per-socket options