curl: support parallel transfers

This is done by making sure each individual transfer is first added to a
linked list as then they can be performed serially, or at will, in
parallel.

Closes #3804

1 files changed, 47 insertions, 1 deletions

diff --git a/src/tool_operate.h b/src/tool_operate.h
index b84388bc5..60257fc60 100644
--- a/src/tool_operate.h
+++ b/src/tool_operate.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2019, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -22,7 +22,53 @@
  *
  ***************************************************************************/
 #include "tool_setup.h"
+#include "tool_cb_hdr.h"
+#include "tool_cb_prg.h"
+#include "tool_sdecls.h"
+
+struct per_transfer {
+  /* double linked */
+  struct per_transfer *next;
+  struct per_transfer *prev;
+  struct OperationConfig *config; /* for this transfer */
+  CURL *curl;
+  long retry_numretries;
+  long retry_sleep_default;
+  long retry_sleep;
+  struct timeval retrystart;
+  bool metalink; /* nonzero for metalink download. */
+  bool metalink_next_res;
+  metalinkfile *mlfile;
+  metalink_resource *mlres;
+  char *this_url;
+  char *outfile;
+  bool infdopen; /* TRUE if infd needs closing */
+  int infd;
+  struct ProgressData progressbar;
+  struct OutStruct outs;
+  struct OutStruct heads;
+  struct InStruct input;
+  struct HdrCbData hdrcbdata;
+  char errorbuffer[CURL_ERROR_SIZE];
+
+  bool added; /* set TRUE when added to the multi handle */
+
+  /* for parallel progress bar */
+  curl_off_t dltotal;
+  curl_off_t dlnow;
+  curl_off_t ultotal;
+  curl_off_t ulnow;
+  bool dltotal_added; /* if the total has been added from this */
+  bool ultotal_added;
+
+  /* NULL or malloced */
+  char *separator_err;
+  char *separator;
+  char *uploadfile;
+};
 
 CURLcode operate(struct GlobalConfig *config, int argc, argv_item_t argv[]);
 
+extern struct per_transfer *transfers; /* first node */
+
 #endif /* HEADER_CURL_TOOL_OPERATE_H */