diff --git a/lib/raop.c b/lib/raop.c
index 4523a2c..767d15c 100755
--- a/lib/raop.c
+++ b/lib/raop.c
@@ -45,6 +45,14 @@ struct raop_s {
     dnssd_t *dnssd;
 
     unsigned short port;
+    unsigned short timing_lport;
+    unsigned short control_lport;
+    unsigned short data_lport;
+    unsigned short mirror_data_lport;  
+
+    unsigned short display_width;
+    unsigned short display_height;
+
 };
 
 struct raop_conn_s {
@@ -303,6 +311,18 @@ raop_init(int max_clients, raop_callbacks_t *callbacks) {
     memcpy(&raop->callbacks, callbacks, sizeof(raop_callbacks_t));
     raop->pairing = pairing;
     raop->httpd = httpd;
+
+    /* initialize network port list */ 
+    raop->port = 0;    
+    raop->timing_lport = 0;
+    raop->control_lport = 0;
+    raop->data_lport = 0;
+    raop->mirror_data_lport = 0;
+
+    /* initialize display width, height */
+    raop->display_width = 1920;
+    raop->display_height = 1080;
+    
     return raop;
 }
 
@@ -334,12 +354,34 @@ raop_set_log_level(raop_t *raop, int level) {
     logger_set_level(raop->logger, level);
 }
 
+void raop_set_display_size(raop_t *raop, unsigned short width, unsigned short height){
+     assert(raop);
+
+     if (width) raop->display_width = width;
+     if (height) raop->display_height = height;
+}
+
 void
 raop_set_port(raop_t *raop, unsigned short port) {
     assert(raop);
     raop->port = port;
 }
 
+void
+raop_set_udp_ports(raop_t *raop, unsigned short udp[3]) {
+    assert(raop);
+    raop->timing_lport = udp[0]; 
+    raop->control_lport = udp[1];
+    raop->data_lport = udp[2];
+}
+
+void
+raop_set_tcp_ports(raop_t *raop, unsigned short tcp[2]) {
+    assert(raop);
+    raop->mirror_data_lport = tcp[0];
+    raop->port = tcp[1];
+}
+
 unsigned short
 raop_get_port(raop_t *raop) {
     assert(raop);
@@ -377,4 +419,4 @@ void
 raop_stop(raop_t *raop) {
     assert(raop);
     httpd_stop(raop->httpd);
-}
\ No newline at end of file
+}
diff --git a/lib/raop.h b/lib/raop.h
index cfd703e..1126bb0 100755
--- a/lib/raop.h
+++ b/lib/raop.h
@@ -54,7 +54,10 @@ RAOP_API raop_t *raop_init(int max_clients, raop_callbacks_t *callbacks);
 
 RAOP_API void raop_set_log_level(raop_t *raop, int level);
 RAOP_API void raop_set_log_callback(raop_t *raop, raop_log_callback_t callback, void *cls);
+RAOP_API void raop_set_display_size(raop_t *raop, unsigned short width, unsigned short height);
 RAOP_API void raop_set_port(raop_t *raop, unsigned short port);
+RAOP_API void raop_set_udp_ports(raop_t *raop, unsigned short port[3]);
+RAOP_API void raop_set_tcp_ports(raop_t *raop, unsigned short port[2]);
 RAOP_API unsigned short raop_get_port(raop_t *raop);
 RAOP_API void *raop_get_callback_cls(raop_t *raop);
 RAOP_API int raop_start(raop_t *raop, unsigned short *port);
diff --git a/lib/raop_handlers.h b/lib/raop_handlers.h
index 104b1c4..b65a26a 100755
--- a/lib/raop_handlers.h
+++ b/lib/raop_handlers.h
@@ -134,10 +134,10 @@ raop_handler_info(raop_conn_t *conn,
     plist_t displays_0_uuid_node = plist_new_string("e0ff8a27-6738-3d56-8a16-cc53aacee925");
     plist_t displays_0_width_physical_node = plist_new_uint(0);
     plist_t displays_0_height_physical_node = plist_new_uint(0);
-    plist_t displays_0_width_node = plist_new_uint(1920);
-    plist_t displays_0_height_node = plist_new_uint(1080);
-    plist_t displays_0_width_pixels_node = plist_new_uint(1920);
-    plist_t displays_0_height_pixels_node = plist_new_uint(1080);
+    plist_t displays_0_width_node = plist_new_uint(conn->raop->display_width);
+    plist_t displays_0_height_node = plist_new_uint(conn->raop->display_height);
+    plist_t displays_0_width_pixels_node = plist_new_uint(conn->raop->display_width);
+    plist_t displays_0_height_pixels_node = plist_new_uint(conn->raop->display_height);
     plist_t displays_0_rotation_node = plist_new_bool(0);
     plist_t displays_0_refresh_rate_node = plist_new_real(1.0 / 60.0);
     plist_t displays_0_overscanned_node = plist_new_bool(1);
@@ -372,12 +372,14 @@ raop_handler_setup(raop_conn_t *conn,
         plist_get_uint_val(time_note, &timing_rport);
         logger_log(conn->raop->logger, LOGGER_DEBUG, "timing_rport = %llu", timing_rport);
 
-        unsigned short timing_lport;
+        unsigned short timing_lport = conn->raop->timing_lport;
         conn->raop_ntp = raop_ntp_init(conn->raop->logger, conn->remote, conn->remotelen, timing_rport);
         raop_ntp_start(conn->raop_ntp, &timing_lport);
 
-        conn->raop_rtp = raop_rtp_init(conn->raop->logger, &conn->raop->callbacks, conn->raop_ntp, conn->remote, conn->remotelen, aeskey, aesiv, ecdh_secret);
-        conn->raop_rtp_mirror = raop_rtp_mirror_init(conn->raop->logger, &conn->raop->callbacks, conn->raop_ntp, conn->remote, conn->remotelen, aeskey, ecdh_secret);
+        conn->raop_rtp = raop_rtp_init(conn->raop->logger, &conn->raop->callbacks, conn->raop_ntp, conn->remote,conn->remotelen,
+                                       aeskey, aesiv, ecdh_secret, conn->raop->control_lport, conn->raop->data_lport);
+        conn->raop_rtp_mirror = raop_rtp_mirror_init(conn->raop->logger, &conn->raop->callbacks, conn->raop_ntp, conn->remote, conn->remotelen,
+                                                     aeskey, ecdh_secret, conn->raop->mirror_data_lport);
 
         plist_t res_event_port_node = plist_new_uint(conn->raop->port);
         plist_t res_timing_port_node = plist_new_uint(timing_lport);
diff --git a/lib/raop_rtp.c b/lib/raop_rtp.c
index d31cfef..79b5942 100755
--- a/lib/raop_rtp.c
+++ b/lib/raop_rtp.c
@@ -133,7 +133,8 @@ raop_rtp_parse_remote(raop_rtp_t *raop_rtp, const unsigned char *remote, int rem
 
 raop_rtp_t *
 raop_rtp_init(logger_t *logger, raop_callbacks_t *callbacks, raop_ntp_t *ntp, const unsigned char *remote, int remotelen,
-              const unsigned char *aeskey, const unsigned char *aesiv, const unsigned char *ecdh_secret)
+              const unsigned char *aeskey, const unsigned char *aesiv, const unsigned char *ecdh_secret,
+              unsigned short control_lport, unsigned short data_lport)
 {
     raop_rtp_t *raop_rtp;
 
@@ -144,6 +145,8 @@ raop_rtp_init(logger_t *logger, raop_callbacks_t *callbacks, raop_ntp_t *ntp, co
     if (!raop_rtp) {
         return NULL;
     }
+    raop_rtp->control_lport = control_lport;
+    raop_rtp->data_lport = data_lport;
     raop_rtp->logger = logger;
     raop_rtp->ntp = ntp;
 
@@ -232,6 +235,8 @@ raop_rtp_init_sockets(raop_rtp_t *raop_rtp, int use_ipv6, int use_udp)
 
     assert(raop_rtp);
 
+    cport = raop_rtp->control_lport;
+    dport = raop_rtp->data_lport;
     csock = netutils_init_socket(&cport, use_ipv6, 1);
     dsock = netutils_init_socket(&dport, use_ipv6, 1);
 
diff --git a/lib/raop_rtp.h b/lib/raop_rtp.h
index 5d66b67..7db1787 100755
--- a/lib/raop_rtp.h
+++ b/lib/raop_rtp.h
@@ -27,7 +27,8 @@
 typedef struct raop_rtp_s raop_rtp_t;
 
 raop_rtp_t *raop_rtp_init(logger_t *logger, raop_callbacks_t *callbacks, raop_ntp_t *ntp, const unsigned char *remote, int remotelen,
-                          const unsigned char *aeskey, const unsigned char *aesiv, const unsigned char *ecdh_secret);
+                          const unsigned char *aeskey, const unsigned char *aesiv, const unsigned char *ecdh_secret,
+                          unsigned short control_lport , unsigned short data_lport);
 
 void raop_rtp_start_audio(raop_rtp_t *raop_rtp, int use_udp, unsigned short control_rport,
                           unsigned short *control_lport, unsigned short *data_lport);
diff --git a/lib/raop_rtp_mirror.c b/lib/raop_rtp_mirror.c
index 2040d7e..e1139aa 100755
--- a/lib/raop_rtp_mirror.c
+++ b/lib/raop_rtp_mirror.c
@@ -102,7 +102,8 @@ raop_rtp_parse_remote(raop_rtp_mirror_t *raop_rtp_mirror, const unsigned char *r
 #define NO_FLUSH (-42)
 raop_rtp_mirror_t *raop_rtp_mirror_init(logger_t *logger, raop_callbacks_t *callbacks, raop_ntp_t *ntp,
                                         const unsigned char *remote, int remotelen,
-                                        const unsigned char *aeskey, const unsigned char *ecdh_secret)
+                                        const unsigned char *aeskey, const unsigned char *ecdh_secret,
+                                        unsigned short mirror_data_lport)
 {
     raop_rtp_mirror_t *raop_rtp_mirror;
 
@@ -113,6 +114,7 @@ raop_rtp_mirror_t *raop_rtp_mirror_init(logger_t *logger, raop_callbacks_t *call
     if (!raop_rtp_mirror) {
         return NULL;
     }
+    raop_rtp_mirror->mirror_data_lport = mirror_data_lport;
     raop_rtp_mirror->logger = logger;
     raop_rtp_mirror->ntp = ntp;
 
@@ -507,6 +509,7 @@ raop_rtp_init_mirror_sockets(raop_rtp_mirror_t *raop_rtp_mirror, int use_ipv6)
 
     assert(raop_rtp_mirror);
 
+    dport = raop_rtp_mirror->mirror_data_lport;
     dsock = netutils_init_socket(&dport, use_ipv6, 0);
     if (dsock == -1) {
         goto sockets_cleanup;
diff --git a/lib/raop_rtp_mirror.h b/lib/raop_rtp_mirror.h
index c465ee5..505d875 100755
--- a/lib/raop_rtp_mirror.h
+++ b/lib/raop_rtp_mirror.h
@@ -25,7 +25,8 @@ typedef struct h264codec_s h264codec_t;
 
 raop_rtp_mirror_t *raop_rtp_mirror_init(logger_t *logger, raop_callbacks_t *callbacks, raop_ntp_t *ntp,
                                         const unsigned char *remote, int remotelen,
-                                        const unsigned char *aeskey, const unsigned char *ecdh_secret);
+                                        const unsigned char *aeskey, const unsigned char *ecdh_secret,
+                                        unsigned short mirror_data_lport);
 void raop_rtp_init_mirror_aes(raop_rtp_mirror_t *raop_rtp_mirror, uint64_t streamConnectionID);
 void raop_rtp_start_mirror(raop_rtp_mirror_t *raop_rtp_mirror, int use_udp, unsigned short *mirror_data_lport);