Add option for remote scrcpy connection

app/meson.build

@@ -137,6 +137,12 @@ foreach f : check_functions
   endif
 endforeach
 
+if host_machine.system() == 'windows' or get_option('crossbuild_windows')
+    # Set the windows version higher than mingw default, needed for inet_pton on windows
+    add_global_arguments('-D_WIN32_WINNT=0x0600', language : 'c')
+	add_global_arguments('-DWINVER=0x0600', language : 'c')
+endif
+
 # the version, updated on release
 conf.set_quoted('SCRCPY_VERSION', meson.project_version())
 

app/src/cli.c

@@ -13,6 +13,14 @@
 #include "util/strbuf.h"
 #include "util/term.h"
 
+#ifdef __WINDOWS__
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#else
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#endif
+
 #define STR_IMPL_(x) #x
 #define STR(x) STR_IMPL_(x)
 
@@ -46,6 +54,8 @@
 #define OPT_V4L2_SINK              1027
 #define OPT_DISPLAY_BUFFER         1028
 #define OPT_V4L2_BUFFER            1029
+#define OPT_TUNNEL_HOST            1030
+#define OPT_TUNNEL_PORT            1031
 
 struct sc_option {
     char shortopt;
@@ -239,6 +249,20 @@ static const struct sc_option options[] = {
                 "Default is " STR(DEFAULT_LOCAL_PORT_RANGE_FIRST) ":"
                               STR(DEFAULT_LOCAL_PORT_RANGE_LAST) ".",
     },
+    {
+        .longopt_id = OPT_TUNNEL_HOST,
+        .longopt = "tunnel-host",
+        .argdesc = "host",
+        .text = "Set the remote IP address of the scrcpy server.\n"
+                "This option is only valid with --force-adb-forward.",
+    },
+    {
+        .longopt_id = OPT_TUNNEL_PORT,
+        .longopt = "tunnel-port",
+        .argdesc = "port",
+        .text = "Set the remote TCP port of the scrcpy server.\n"
+                "This option is only valid with --force-adb-forward.",
+    },
     {
         .longopt_id = OPT_POWER_OFF_ON_CLOSE,
         .longopt = "power-off-on-close",
@@ -1123,6 +1147,27 @@ parse_record_format(const char *optarg, enum sc_record_format *format) {
     return false;
 }
 
+static bool
+parse_ip(const char *optarg, uint32_t *ipv4) {
+    struct in_addr conv;
+    if (!inet_pton(AF_INET, optarg, &conv)) {
+        LOGE("IP address is invalid: %s", optarg);
+        return false;
+    }
+    *ipv4 = ntohl(conv.s_addr);
+    return true;
+}
+
+static bool
+parse_port(const char *optarg, uint16_t *port) {
+    long value;
+    if (!parse_integer_arg(optarg, &value, false, 1, 0xFFFF, "tunnel port")) {
+        return false;
+    }
+    *port = (uint16_t)value;
+	return true;
+}
+
 static enum sc_record_format
 guess_record_format(const char *filename) {
     size_t len = strlen(filename);
@@ -1195,6 +1240,16 @@ parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
                     return false;
                 }
                 break;
+            case OPT_TUNNEL_HOST:
+                if (!parse_ip(optarg, &opts->scrcpy_ip)) {
+                    return false;
+                }
+                break;
+            case OPT_TUNNEL_PORT:
+                if (!parse_port(optarg, &opts->scrcpy_port)) {
+                    return false;
+                }
+                break;
             case 'n':
                 opts->control = false;
                 break;

app/src/options.c

@@ -19,6 +19,8 @@ const struct scrcpy_options scrcpy_options_default = {
         .first = DEFAULT_LOCAL_PORT_RANGE_FIRST,
         .last = DEFAULT_LOCAL_PORT_RANGE_LAST,
     },
+    .scrcpy_ip = 0,
+    .scrcpy_port = 0,
     .shortcut_mods = {
         .data = {SC_MOD_LALT, SC_MOD_LSUPER},
         .count = 2,

app/src/options.h

@@ -77,6 +77,8 @@ struct scrcpy_options {
     enum sc_record_format record_format;
     enum sc_keyboard_input_mode keyboard_input_mode;
     struct sc_port_range port_range;
+    uint32_t scrcpy_ip;
+    uint16_t scrcpy_port;
     struct sc_shortcut_mods shortcut_mods;
     uint16_t max_size;
     uint32_t bit_rate;

app/src/scrcpy.c

@@ -345,6 +345,8 @@ scrcpy(struct scrcpy_options *options) {
         .log_level = options->log_level,
         .crop = options->crop,
         .port_range = options->port_range,
+        .scrcpy_ip = options->scrcpy_ip,
+        .scrcpy_port = options->scrcpy_port,
         .max_size = options->max_size,
         .bit_rate = options->bit_rate,
         .max_fps = options->max_fps,

app/src/server.c

@@ -202,8 +202,8 @@ execute_server(struct sc_server *server,
 }
 
 static bool
-connect_and_read_byte(struct sc_intr *intr, sc_socket socket, uint16_t port) {
+connect_and_read_byte(struct sc_intr *intr, sc_socket socket, uint32_t ip, uint16_t port) {
-    bool ok = net_connect_intr(intr, socket, IPV4_LOCALHOST, port);
+    bool ok = net_connect_intr(intr, socket, ip, port);
     if (!ok) {
         return false;
     }
@@ -220,13 +220,12 @@ connect_and_read_byte(struct sc_intr *intr, sc_socket socket, uint16_t port) {
 }
 
 static sc_socket
-connect_to_server(struct sc_server *server, uint32_t attempts, sc_tick delay) {
+connect_to_server(struct sc_server *server, uint32_t attempts, sc_tick delay, uint32_t ip, uint16_t port) {
-    uint16_t port = server->tunnel.local_port;
     do {
         LOGD("Remaining connection attempts: %d", (int) attempts);
         sc_socket socket = net_socket();
         if (socket != SC_SOCKET_NONE) {
-            bool ok = connect_and_read_byte(&server->intr, socket, port);
+            bool ok = connect_and_read_byte(&server->intr, socket, ip, port);
             if (ok) {
                 // it worked!
                 return socket;
@@ -352,9 +351,23 @@ sc_server_connect_to(struct sc_server *server, struct sc_server_info *info) {
             goto fail;
         }
     } else {
+        uint32_t ip;
+        if (server->params.scrcpy_ip) {
+            ip = server->params.scrcpy_ip;
+        } else {
+            ip = IPV4_LOCALHOST;
+        }
+
+		uint16_t port;
+        if (server->params.scrcpy_port) {
+            port = server->params.scrcpy_port;
+        } else {
+            port = tunnel->local_port;
+        }
+
         uint32_t attempts = 100;
         sc_tick delay = SC_TICK_FROM_MS(100);
-        video_socket = connect_to_server(server, attempts, delay);
+        video_socket = connect_to_server(server, attempts, delay, ip, port);
         if (video_socket == SC_SOCKET_NONE) {
             goto fail;
         }
@@ -365,7 +378,7 @@ sc_server_connect_to(struct sc_server *server, struct sc_server_info *info) {
             goto fail;
         }
         bool ok = net_connect_intr(&server->intr, control_socket,
-                                   IPV4_LOCALHOST, tunnel->local_port);
+                                   ip, port);
         if (!ok) {
             goto fail;
         }

app/src/server.h

@@ -29,6 +29,8 @@ struct sc_server_params {
     const char *codec_options;
     const char *encoder_name;
     struct sc_port_range port_range;
+    uint32_t scrcpy_ip;
+    uint16_t scrcpy_port;
     uint16_t max_size;
     uint32_t bit_rate;
     uint16_t max_fps;