Updated patch for dpi

Dockerfile

@@ -76,34 +76,38 @@ RUN <<-"EOT" bash -ex
     # Patch to overcome DPI start (works only for UDP connections, taken from https://github.com/GubernievS/AntiZapret-VPN/blob/main/setup/root/patch-openvpn.sh
     sed -i '/link_socket_write_udp(struct link_socket \*sock/,/\/\* write a TCP or UDP packet to link \*\//c\
     link_socket_write_udp(struct link_socket *sock,\
-                          struct buffer *buf,\
-                          struct link_socket_actual *to)\
+    					struct buffer *buf,\
+    					struct link_socket_actual *to)\
     {\
-        uint16_t stuffing_sent = 0;\
-        uint8_t opcode = *BPTR(buf) >> 3;\
+    	uint16_t stuffing_sent = 0;\
+    	uint8_t opcode = *BPTR(buf) >> 3;\
     if (opcode == 7 || opcode == 8 || opcode == 10)\
     {\
-        uint8_t stuffing_data[] = {0x01, 0x00, 0x00, 0x00, 0x01};\
-        size_t stuffing_len = sizeof(stuffing_data);\
-        struct buffer stuffing_buf = clone_buf(buf);\
-        buf_clear(&stuffing_buf);\
-        buf_write(&stuffing_buf, stuffing_data, stuffing_len);\
-        for (int i=0; i<100; i++)\
-        {\
+    	srand(time(NULL));\
+    	for (int i=0; i<2; i++) {\
+    		int stuffing_len = rand() % 91 + 10;\
+    		uint8_t stuffing_data[100];\
+    		for (int j=0; j<stuffing_len; j++) {\
+    			stuffing_data[j] = rand() % 256;\
+    		}\
+    		struct buffer stuffing_buf = alloc_buf(100);\
+    		buf_write(&stuffing_buf, stuffing_data, stuffing_len);\
+    		for (int j=0; j<100; j++) {\
     #ifdef _WIN32\
-            stuffing_sent =+ link_socket_write_win32(sock, &stuffing_buf, to);\
+    			stuffing_sent =+ link_socket_write_win32(sock, &stuffing_buf, to);\
     #else\
-            stuffing_sent =+ link_socket_write_udp_posix(sock, &stuffing_buf, to);\
+    			stuffing_sent =+ link_socket_write_udp_posix(sock, &stuffing_buf, to);\
     #endif\
-        }\
-        free_buf(&stuffing_buf);\
+    		}\
+    		free_buf(&stuffing_buf);\
+    	}\
     }\
     #ifdef _WIN32\
-        stuffing_sent =+ link_socket_write_win32(sock, buf, to);\
+    	stuffing_sent =+ link_socket_write_win32(sock, buf, to);\
     #else\
-        stuffing_sent =+ link_socket_write_udp_posix(sock, buf, to);\
+    	stuffing_sent =+ link_socket_write_udp_posix(sock, buf, to);\
     #endif\
-        return stuffing_sent;\
+    	return stuffing_sent;\
     }\
     \
     \/\* write a TCP or UDP packet to link \*\/' "/opt/openvpn_install/openvpn-$OPENVPN_VER/src/openvpn/socket.h"