diff --git a/clients/fhost.h b/clients/fhost.h
new file mode 100644
index 0000000..034be2a
--- /dev/null
+++ b/clients/fhost.h
@@ -0,0 +1,22 @@
+struct fsp_host {
+    char *hostname;
+    char *hostaddr; /* decimal ip address */
+    char **alias;
+    int port;
+    int local_port;
+    char *dir;
+    char *local_dir;
+    int delay;
+    int timeout;
+    int trace;
+    char *password;
+};
+
+struct fsp_host * init_host(void);
+void add_host(struct fsp_host *h);
+void add_host_alias(struct fsp_host *h, const char *name);
+
+/* lex parser */
+extern FILE *yyin;
+int yylex(void);
+int yywrap(void);