fix bugs

local.c

@@ -109,7 +109,7 @@ static void server_recv_cb (EV_P_ ev_io *w, int revents) {
     int *buf_len = &remote->buf_len;
     if (server->stage != 5) {
         buf = server->buf;
-        buf_len = server->buf_len;
+        buf_len = &server->buf_len;
     }
 
 	while (1) {
@@ -197,16 +197,9 @@ static void server_recv_cb (EV_P_ ev_io *w, int revents) {
 			if (request->atyp == 1) {
 
 				// IP V4
-				struct in_addr *in_addr;
-				in_addr = (struct in_addr *)(server->buf + 4);
-                char* addr_buf = inet_ntoa(*in_addr);
-                unsigned char name_len = strlen(addr_buf);
-                memcpy(addr_to_send + addr_len, addr_buf, name_len);
-                addr_len += name_len;
-
-				// get port
-                addr_to_send[addr_len++] = *(unsigned char *)(server->buf + 4 + 4); 
-                addr_to_send[addr_len++] = *(unsigned char *)(server->buf + 4 + 4 + 1); 
+                size_t in_addr_len = sizeof(struct in_addr);
+                memcpy(addr_to_send + addr_len, server->buf + 4, in_addr_len + 2);
+                addr_len += in_addr_len + 2;
                 addr_to_send[addr_len] = 0;
 
 			} else if (request->atyp == 3) {