29 struct per_transfer {  struct
31   struct per_transfer *next;  argument
32   struct per_transfer *prev;  argument
33   struct OperationConfig *config; /* for this transfer */
34   CURL *curl;
35   long retry_numretries;
36   long retry_sleep_default;
37   long retry_sleep;
38   struct timeval retrystart;
39   bool metalink; /* nonzero for metalink download. */
40   bool metalink_next_res;
41   struct metalinkfile *mlfile;
42   struct metalink_resource *mlres;
43   char *this_url;
44   char *outfile;
45   bool infdopen; /* TRUE if infd needs closing */
46   int infd;
47   bool noprogress;
48   struct ProgressData progressbar;
49   struct OutStruct outs;
50   struct OutStruct heads;
51   struct OutStruct etag_save;
52   struct InStruct input;
53   struct HdrCbData hdrcbdata;
54   long num_headers;
55   bool was_last_header_empty;
79 extern struct per_transfer *transfers; /* first node */  argument