return x;
}
-bool add_edge_h(connection_t *c, char *request) {
+bool add_edge_h(connection_t *c, const char *request) {
edge_t *e;
node_t *from, *to;
char from_name[MAX_STRING_SIZE];
e->from->name, e->to->name);
}
-bool del_edge_h(connection_t *c, char *request) {
+bool del_edge_h(connection_t *c, const char *request) {
edge_t *e;
char from_name[MAX_STRING_SIZE];
char to_name[MAX_STRING_SIZE];