From: Jonathan Bastien-Filiatrault <joe@x2a.org>
Date: Tue, 4 Aug 2009 01:38:51 +0000 (-0400)
Subject: Add state for handshake mtu.
X-Git-Tag: gnutls_2_99_0~246
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=d36efeead48027dc8ea4f05dac89c1ea65f45d6a;p=thirdparty%2Fgnutls.git

Add state for handshake mtu.

Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org>
---

diff --git a/lib/gnutls_int.h b/lib/gnutls_int.h
index 6b95ae53e2..7a54723224 100644
--- a/lib/gnutls_int.h
+++ b/lib/gnutls_int.h
@@ -171,6 +171,10 @@ typedef enum transport_t
 #define HANDSHAKE_HEADER_SIZE (IS_DTLS ? DTLS_HANDSHAKE_HEADER_SIZE : TLS_HANDSHAKE_HEADER_SIZE)
 #define MAX_HANDSHAKE_HEADER_SIZE DTLS_HANDSHAKE_HEADER_SIZE
 
+/* This is the maximum handshake message size we send without
+   fragmentation. This currently ignores record layer overhead. */
+#define DTLS_DEFAULT_MTU 1200
+
 /* the maximum size of the DTLS cookie */
 #define DTLS_MAX_COOKIE_SIZE 32
 
@@ -535,6 +539,7 @@ typedef struct
   /* For DTLS handshake fragmentation and reassembly. */
   uint16_t hsk_write_seq;
   uint16_t hsk_read_seq;
+  uint16_t hsk_mtu;
 } dtls_st;
 
 
diff --git a/lib/gnutls_state.c b/lib/gnutls_state.c
index 88824eaf59..743975db26 100644
--- a/lib/gnutls_state.c
+++ b/lib/gnutls_state.c
@@ -388,6 +388,7 @@ gnutls_init_dtls (gnutls_session_t * session,
 
   /* Flags do nothing, so just copy them into the struct for now. */
   (*session)->internals.dtls.flags = flags;
+  (*session)->internals.dtls.hsk_mtu = DTLS_DEFAULT_MTU;
   (*session)->internals.transport = GNUTLS_DGRAM;
 
   return 0;