int (*set_option)(struct transport *connection, const char *name,
const char *value);
+ /**
+ * Returns a list of the remote side's refs. In order to allow
+ * the transport to try to share connections, for_push is a
+ * hint as to whether the ultimate operation is a push or a fetch.
+ *
+ * If the transport is able to determine the remote hash for
+ * the ref without a huge amount of effort, it should store it
+ * in the ref's old_sha1 field; otherwise it should be all 0.
+ **/
struct ref *(*get_refs_list)(struct transport *transport, int for_push);
- int (*fetch)(struct transport *transport, int refs_nr, const struct ref **refs);
+
+ /**
+ * Fetch the objects for the given refs. Note that this gets
+ * an array, and should ignore the list structure.
+ *
+ * If the transport did not get hashes for refs in
+ * get_refs_list(), it should set the old_sha1 fields in the
+ * provided refs now.
+ **/
+ int (*fetch)(struct transport *transport, int refs_nr, struct ref **refs);
+
+ /**
+ * Push the objects and refs. Send the necessary objects, and
+ * then, for any refs where peer_ref is set and
+ * peer_ref->new_sha1 is different from old_sha1, tell the
+ * remote side to update each ref in the list from old_sha1 to
+ * peer_ref->new_sha1.
+ *
+ * Where possible, set the status for each ref appropriately.
+ *
+ * The transport must modify new_sha1 in the ref to the new
+ * value if the remote accepted the change. Note that this
+ * could be a different value from peer_ref->new_sha1 if the
+ * process involved generating new commits.
+ **/
int (*push_refs)(struct transport *transport, struct ref *refs, int flags);
int (*push)(struct transport *connection, int refspec_nr, const char **refspec, int flags);
+ /** get_refs_list(), fetch(), and push_refs() can keep
+ * resources (such as a connection) reserved for futher
+ * use. disconnect() releases these resources.
+ **/
int (*disconnect)(struct transport *connection);
char *pack_lockfile;
signed verbose : 3;
const struct ref *transport_get_remote_refs(struct transport *transport);
-int transport_fetch_refs(struct transport *transport, const struct ref *refs);
+int transport_fetch_refs(struct transport *transport, struct ref *refs);
void transport_unlock_pack(struct transport *transport);
int transport_disconnect(struct transport *transport);
char *transport_anonymize_url(const char *url);