diff --git a/adb.c b/adb.c
index 446c70e..4655d7c 100644
--- a/adb.c
+++ b/adb.c
@@ -687,7 +687,7 @@
 #endif
 
 #if ADB_HOST
-int launch_server()
+int launch_server(int server_port)
 {
 #ifdef HAVE_WIN32_PROC
     /* we need to start the server in the background                    */
@@ -822,7 +822,17 @@
 }
 #endif
 
-int adb_main(int is_daemon)
+/* Constructs a local name of form tcp:port.
+ * target_str points to the target string, it's content will be overwritten.
+ * target_size is the capacity of the target string.
+ * server_port is the port number to use for the local name.
+ */
+void build_local_name(char* target_str, size_t target_size, int server_port)
+{
+  snprintf(target_str, target_size, "tcp:%d", server_port);
+}
+
+int adb_main(int is_daemon, int server_port)
 {
 #if !ADB_HOST
     int secure = 0;
@@ -845,9 +855,11 @@
     HOST = 1;
     usb_vendors_init();
     usb_init();
-    local_init(ADB_LOCAL_TRANSPORT_PORT);
+    local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT);
 
-    if(install_listener("tcp:5037", "*smartsocket*", NULL)) {
+    char local_name[30];
+    build_local_name(local_name, sizeof(local_name), server_port);
+    if(install_listener(local_name, "*smartsocket*", NULL)) {
         exit(1);
     }
 #else
@@ -873,7 +885,7 @@
         }
     }
 
-    /* don't listen on port 5037 if we are running in secure mode */
+    /* don't listen on a port (default 5037) if running in secure mode */
     /* don't run as root if we are running in secure mode */
     if (secure) {
         struct __user_cap_header_struct header;
@@ -905,9 +917,11 @@
         cap.inheritable = 0;
         capset(&header, &cap);
 
-        D("Local port 5037 disabled\n");
+        D("Local port disabled\n");
     } else {
-        if(install_listener("tcp:5037", "*smartsocket*", NULL)) {
+        char local_name[30];
+        build_local_name(local_name, sizeof(local_name), server_port);
+        if(install_listener(local_name, "*smartsocket*", NULL)) {
             exit(1);
         }
     }
@@ -928,7 +942,7 @@
         usb_init();
     } else {
         // listen on default port
-        local_init(ADB_LOCAL_TRANSPORT_PORT);
+        local_init(DEFAULT_ADB_LOCAL_TRANSPORT_PORT);
     }
     init_jdwp();
 #endif
@@ -1169,6 +1183,6 @@
     }
 
     start_device_log();
-    return adb_main(0);
+    return adb_main(0, DEFAULT_ADB_PORT);
 #endif
 }
diff --git a/adb.h b/adb.h
index aaf8a28..a2b611e 100644
--- a/adb.h
+++ b/adb.h
@@ -237,8 +237,8 @@
 void send_packet(apacket *p, atransport *t);
 
 void get_my_path(char *s, size_t maxLen);
-int launch_server();
-int adb_main(int is_daemon);
+int launch_server(int server_port);
+int adb_main(int is_daemon, int server_port);
 
 
 /* transports are ref-counted
@@ -358,8 +358,8 @@
 #define print_packet(tag,p) do {} while (0)
 #endif
 
-#define ADB_PORT 5037
-#define ADB_LOCAL_TRANSPORT_PORT 5555
+#define DEFAULT_ADB_PORT 5037
+#define DEFAULT_ADB_LOCAL_TRANSPORT_PORT 5555
 
 #define ADB_CLASS              0xff
 #define ADB_SUBCLASS           0x42
diff --git a/adb_client.c b/adb_client.c
index 243f0fa..882810a 100644
--- a/adb_client.c
+++ b/adb_client.c
@@ -16,12 +16,19 @@
 static transport_type __adb_transport = kTransportAny;
 static const char* __adb_serial = NULL;
 
+static int __adb_server_port = DEFAULT_ADB_PORT;
+
 void adb_set_transport(transport_type type, const char* serial)
 {
     __adb_transport = type;
     __adb_serial = serial;
 }
 
+void adb_set_tcp_specifics(int server_port)
+{
+    __adb_server_port = server_port;
+}
+
 int  adb_get_emulator_console_port(void)
 {
     const char*   serial = __adb_serial;
@@ -174,7 +181,7 @@
     }
     snprintf(tmp, sizeof tmp, "%04x", len);
 
-    fd = socket_loopback_client(ADB_PORT, SOCK_STREAM);
+    fd = socket_loopback_client(__adb_server_port, SOCK_STREAM);
     if(fd < 0) {
         strcpy(__adb_error, "cannot connect to daemon");
         return -2;
@@ -204,9 +211,10 @@
     int fd = _adb_connect("host:version");
 
     if(fd == -2) {
-        fprintf(stdout,"* daemon not running. starting it now *\n");
+        fprintf(stdout,"* daemon not running. starting it now on port %d *\n",
+                __adb_server_port);
     start_server:
-        if(launch_server(0)) {
+        if(launch_server(__adb_server_port)) {
             fprintf(stderr,"* failed to start daemon *\n");
             return -1;
         } else {
@@ -314,5 +322,3 @@
     adb_close(fd);
     return 0;
 }
-
-
diff --git a/adb_client.h b/adb_client.h
index 8061579..40ab189 100644
--- a/adb_client.h
+++ b/adb_client.h
@@ -25,6 +25,10 @@
 */
 void adb_set_transport(transport_type type, const char* serial);
 
+/* Set TCP specifics of the transport to use
+*/
+void adb_set_tcp_specifics(int server_port);
+
 /* Return the console port of the currently connected emulator (if any)
  * of -1 if there is no emulator, and -2 if there is more than one.
  * assumes adb_set_transport() was alled previously...
diff --git a/commandline.c b/commandline.c
index 5a68716..bb77c4f 100644
--- a/commandline.c
+++ b/commandline.c
@@ -761,6 +761,7 @@
     int quote;
     transport_type ttype = kTransportAny;
     char* serial = NULL;
+    char* server_port_str = NULL;
 
         /* If defined, this should be an absolute path to
          * the directory containing all of the various system images
@@ -776,7 +777,20 @@
 
     serial = getenv("ANDROID_SERIAL");
 
-        /* modifiers and flags */
+    /* Validate and assign the server port */
+    server_port_str = getenv("ANDROID_ADB_SERVER_PORT");
+    int server_port = DEFAULT_ADB_PORT;
+    if (server_port_str && strlen(server_port_str) > 0) {
+        server_port = (int) strtol(server_port_str, NULL, 0);
+        if (server_port <= 0) {
+            fprintf(stderr,
+                    "adb: Env var ANDROID_ADB_SERVER_PORT must be a positive number. Got \"%s\"\n",
+                    server_port_str);
+            return usage();
+        }
+    }
+
+    /* modifiers and flags */
     while(argc > 0) {
         if(!strcmp(argv[0],"nodaemon")) {
             no_daemon = 1;
@@ -805,7 +819,7 @@
             if (isdigit(argv[0][2])) {
                 serial = argv[0] + 2;
             } else {
-                if(argc < 2) return usage();
+                if(argc < 2 || argv[0][2] != '\0') return usage();
                 serial = argv[1];
                 argc--;
                 argv++;
@@ -823,12 +837,13 @@
     }
 
     adb_set_transport(ttype, serial);
+    adb_set_tcp_specifics(server_port);
 
     if ((argc > 0) && (!strcmp(argv[0],"server"))) {
         if (no_daemon || is_daemon) {
-            r = adb_main(is_daemon);
+            r = adb_main(is_daemon, server_port);
         } else {
-            r = launch_server();
+            r = launch_server(server_port);
         }
         if(r) {
             fprintf(stderr,"* could not start server *\n");
@@ -893,10 +908,10 @@
             /* quote empty strings and strings with spaces */
             quote = (**argv == 0 || strchr(*argv, ' '));
             if (quote)
-            	strcat(buf, "\"");
+                strcat(buf, "\"");
             strcat(buf, *argv++);
             if (quote)
-            	strcat(buf, "\"");
+                strcat(buf, "\"");
         }
 
         for(;;) {
diff --git a/transport_local.c b/transport_local.c
index 81d120e..cfd3b4b 100644
--- a/transport_local.c
+++ b/transport_local.c
@@ -132,7 +132,7 @@
 static void *client_socket_thread(void *x)
 {
 #if ADB_HOST
-    int  port  = ADB_LOCAL_TRANSPORT_PORT;
+    int  port  = DEFAULT_ADB_LOCAL_TRANSPORT_PORT;
     int  count = ADB_LOCAL_TRANSPORT_MAX;
 
     D("transport: client_socket_thread() starting\n");
@@ -244,7 +244,7 @@
     if (HOST && local) {
         adb_mutex_lock( &local_transports_lock );
         {
-            int  index = (port - ADB_LOCAL_TRANSPORT_PORT)/2;
+            int  index = (port - DEFAULT_ADB_LOCAL_TRANSPORT_PORT)/2;
 
             if (!(port & 1) || index < 0 || index >= ADB_LOCAL_TRANSPORT_MAX) {
                 D("bad local transport port number: %d\n", port);