From: Sebastian Harl <sh@tokkee.org>
Date: Fri, 25 Oct 2013 17:04:56 +0000 (+0200)
Subject: socket frontend: Let handler read from open connection.
X-Git-Tag: sysdb-0.1.0~336^2~32
X-Git-Url: https://git.tokkee.org/?p=sysdb.git;a=commitdiff_plain;h=60b7521d96faf3dc97118012e80667f1286c17c4

socket frontend: Let handler read from open connection.

Close the connection on EOF and pass back the connection to the main loop in
case no data is currently available (read() would block).
---

diff --git a/src/frontend/sock.c b/src/frontend/sock.c
index fb79f10..d157853 100644
--- a/src/frontend/sock.c
+++ b/src/frontend/sock.c
@@ -292,6 +292,7 @@ connection_destroy(sdb_object_t *obj)
 	assert(obj);
 	conn = &CONN(obj)->conn;
 
+	sdb_log(SDB_LOG_DEBUG, "frontend: Closing connection on fd=%i", conn->fd);
 	close(conn->fd);
 	conn->fd = -1;
 } /* connection_destroy */
@@ -363,9 +364,21 @@ connection_handler(void *data)
 			continue;
 		}
 
-		/* XXX */
-		sdb_log(SDB_LOG_INFO, "frontend: Data available on connection fd=%i\n",
-				conn->conn.fd);
+		status = connection_read(conn->conn.fd);
+		if (status <= 0) {
+			/* error or EOF → close connection */
+			sdb_object_deref(SDB_OBJ(conn));
+		}
+		else {
+			if (sdb_llist_append(sock->open_connections, SDB_OBJ(conn))) {
+				sdb_log(SDB_LOG_ERR, "frontend: Failed to re-append "
+						"connection %s to list of open connections",
+						SDB_OBJ(conn)->name);
+			}
+
+			/* pass ownership back to list; or destroy in case of an error */
+			sdb_object_deref(SDB_OBJ(conn));
+		}
 	}
 	return NULL;
 } /* connection_handler */
@@ -561,7 +574,6 @@ sdb_fe_sock_listen_and_serve(sdb_fe_socket_t *sock, sdb_fe_loop_t *loop)
 						CONN(obj)->conn.fd);
 
 			if (FD_ISSET(CONN(obj)->conn.fd, &ready)) {
-				sdb_log(SDB_LOG_INFO, "Data on fd %d", CONN(obj)->conn.fd);
 				sdb_llist_iter_remove_current(iter);
 				sdb_channel_write(sock->chan, &obj);
 			}