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[oweals/gnunet.git] / src / include / gnunet_constants.h

diff --git a/src/include/gnunet_constants.h b/src/include/gnunet_constants.h
index b8e280d4eb3f51b49c41c84b39e7437edb605791..4fcdc0dbb567fe4aa2d08e1e432c8eadd6eaf5e6 100644 (file)
--- a/src/include/gnunet_constants.h
+++ b/src/include/gnunet_constants.h
@@ -49,7 +49,13 @@ extern "C"
  * After how long do we consider a connection to a peer dead
  * if we don't receive messages from the peer?
  */
-#define GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 5)
+#define GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 3)
+
+/**
+ * After how long do we consider a connection to a peer dead
+ * if we got an explicit disconnect and were unable to reconnect?
+ */
+#define GNUNET_CONSTANTS_DISCONNECT_SESSION_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 3)
 
 /**
  * How long do we delay reading more from a peer after a quota violation?
@@ -63,7 +69,14 @@ extern "C"
 #define GNUNET_CONSTANTS_EXEC_WAIT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, 200)
 
 /**
- * After how long do we consider a service irresponsive
+ * After how long do we retry a service connection that was 
+ * unavailable?  Used in cases where an exponential back-off
+ * seems inappropriate.
+ */
+#define GNUNET_CONSTANTS_SERVICE_RETRY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, 500)
+
+/**
+ * After how long do we consider a service unresponsive
  * even if we assume that the service commonly does not
  * respond instantly (DNS, Database, etc.).
  */
@@ -84,6 +97,37 @@ extern "C"
  */
 #define GNUNET_CONSTANTS_IDLE_LOAD_THRESHOLD 70
 
+/**
+ * Size of the 'struct EncryptedMessage' of the core (which
+ * is the per-message overhead of the core).  
+ */
+#define GNUNET_CONSTANTS_CORE_SIZE_ENCRYPTED_MESSAGE (24 + sizeof (GNUNET_HashCode))
+
+/**
+ * Size of the 'struct OutboundMessage' of the transport 
+ * (which, in combination with the 
+ * GNUNET_CONSTANTS_CORE_SIZE_ENCRYPTED_MESSAGE) defines
+ * the headers that must be pre-pendable to all GNUnet
+ * messages.  Taking GNUNET_SERVER_MAX_MESSAGE_SIZE
+ * and subtracting these two constants defines the largest
+ * message core can handle.
+ */
+#define GNUNET_CONSTANTS_TRANSPORT_SIZE_OUTBOUND_MESSAGE (16 + sizeof (struct GNUNET_PeerIdentity))
+
+
+/**
+ * What is the maximum size for encrypted messages?  Note that this
+ * number imposes a clear limit on the maximum size of any message.
+ * Set to a value close to 64k but not so close that transports will
+ * have trouble with their headers.
+ *
+ * Could theoretically be 64k minus (GNUNET_CONSTANTS_CORE_SIZE_ENCRYPTED_MESSAGE +
+ * GNUNET_CONSTANTS_TRANSPORT_SIZE_OUTBOUND_MESSAGE), but we're going
+ * to be more conservative for now. 
+ */
+#define GNUNET_CONSTANTS_MAX_ENCRYPTED_MESSAGE_SIZE (63 * 1024)
+
+
 
 #if 0                           /* keep Emacsens' auto-indent happy */
 {