FilterMethods

The FilterMethods data structure is passed to filter_create to define the filter methods a filter supports. Each new FilterMethods instance must be initialized with the FILTER_METHODS_INITIALIZER macro. For each filter method a filter supports, the corresponding FilterMethods member should point to a function that implements that filter method.

typedef struct {
    size_t size;
    FilterInsertFunc *insert;
    FilterRemoveFunc *remove;
    FilterFlushFunc *flush;
    FilterReadFunc *read;
    FilterWriteFunc *write;
    FilterWritevFunc *writev;
    FilterSendfileFunc *sendfile;
} FilterMethods;