diff --git a/common.h b/common.h
index 998abfa..9c78a41 100644
--- a/common.h
+++ b/common.h
@@ -39,10 +39,12 @@
 #endif
 
 #include <my_ev.h>
+#include <netinet/in.h>
 
 #if defined(__MINGW32__)
 #include <winsock2.h>
 #include <ws2ipdef.h>
+
 typedef unsigned char u_int8_t;
 typedef unsigned short u_int16_t;
 typedef unsigned int u_int32_t;
@@ -51,7 +53,6 @@ typedef int socklen_t;
 #include <sys/socket.h>
 #include <sys/types.h>
 #include <sys/ioctl.h>
-#include <netinet/in.h>
 #include <arpa/inet.h>
 #endif
 
diff --git a/network.cpp b/network.cpp
index ee68990..9279b5c 100644
--- a/network.cpp
+++ b/network.cpp
@@ -1863,7 +1863,7 @@ int send_raw_tcp(raw_info_t &raw_info,const char * payload, int payloadlen) {
 
 	tcph->urg = 0;
 	//tcph->window = htons((uint16_t)(1024));
-	tcph->window = htons((uint16_t) (receive_window_lower_bound + random() % receive_window_random_range));
+	tcph->window = htons((uint16_t) (receive_window_lower_bound + get_true_random_number() % receive_window_random_range));
 
 	tcph->check = 0; //leave checksum 0 now, filled later by pseudo header
 	tcph->urg_ptr = 0;
@@ -2802,7 +2802,7 @@ int after_send_raw0(raw_info_t &raw_info)
 				send_info.seq += raw_info.send_info.data_len;    //////////////////modify
 			} else if (seq_mode == 2)
 			{
-				if (random() % 5 == 3)
+				if (get_true_random_number() % 5 == 3)
 					send_info.seq += raw_info.send_info.data_len; //////////////////modify
 			}
 			else if(seq_mode==3||seq_mode==4)