sent default request to server to test connection . returns string `` ok '' if connection set . returns string `` error '' in other ways . concode_field_sep String homeUrl concode_elem_sep SchemeGson gson concode_elem_sep HttpClient client concode_field_sep Scheme getLatestScheme concode_elem_sep String getLineFromServer concode_elem_sep Scheme getSchemeByVersion concode_elem_sep void putScheme concode_elem_sep Group getAllSchemesInGroup concode_elem_sep String executeHttpRequest concode_elem_sep void deleteScheme concode_elem_sep HttpResponse getResponseFromServer
void function ( ) { getLineFromServer ( "srini_string" ) ; }