- bug fix in coc_server.c

- bug fixes in tecs
- new system to determine host:port in six and tecs_client

tecs/coc_client.c

@@ -103,6 +103,9 @@ int CocInitClient(CocConn *conn, char *host, int port, char *magic, int bufsize,
 int CocSendMagic(CocConn *conn, char *magic) {
   char *err;
 
+  if (magic != conn->magic) {
+    str_copy(conn->magic, magic);
+  }
   StrClear(&conn->resbuf); /* use return buffer for command in order to preserve command buffer */
   ERR_I(StrPut(&conn->resbuf, "", COC_MAGIC));
   ERR_I(StrPut(&conn->resbuf, magic, COC_SEP));