diff --git a/easysock.c b/easysock.c
index b167cf5..933308e 100644
--- a/easysock.c
+++ b/easysock.c
@@ -102,3 +102,15 @@ int create_remote (int network,char transport,char* address,int port,struct sock
 	}
         return socket;
 }
+
+
+int check_ip_ver(char* address) {
+        char buffer[16]; /* 16 chars - 128 bits - is enough to hold an ipv6 address */
+        if (inet_pton(AF_INET,address,buffer) == 1) {
+                return 4;
+        } else if (inet_pton(AF_INET6,address,buffer) == 1) {
+                return 6;
+        } else {
+                return -1;
+        }
+}
diff --git a/easysock.h b/easysock.h
index 105b19e..f2066a8 100644
--- a/easysock.h
+++ b/easysock.h
@@ -50,5 +50,9 @@ It prints the error returned by 'connect' if something went wrong, and exits wit
 
 int create_remote (int network,char transport,char* address,int port,struct sockaddr* remote_addr_struct);
 
+/* check_ip_ver - This function checks if the given string is an IPv4 address (returns 4), 
+IPv6 address (returns 6) or neither (returns -1).
+
+int check_ip_ver(char* address);
 
 #endif
diff --git a/main.c b/main.c
index 9b10519..246d1b6 100644
--- a/main.c
+++ b/main.c
@@ -13,18 +13,6 @@ void forward_data(int from_fd, int to_fd) {
 	}
 }
 
-int check_ip_ver(char* address) {
-	char buffer[16]; /* 16 chars - 128 bits - is enough to hold an ipv6 address */
-	if (inet_pton(AF_INET,address,buffer) == 1) {
-		return 4;
-	} else if (inet_pton(AF_INET6,address,buffer) == 1) {
-		return 6;
-	} else {
-		return -1;
-	}
-}
-
-
 void print_prog_info() {
 	printf("%s [Local IP address] [local port] [remote IP address] [remote port]\n",PROG_NAME);
 }