[releng] convert-to-tarballs.py: make curl a bit more resilient against d/l problems

[Olav Vitters <ovitters src gnome org>]

commit cd2b9b3d61c2ecf49361992798c275d8e8eb7f04
Author: Olav Vitters <olav vitters nl>
Date:   Mon Jun 13 22:56:48 2011 +0200

    convert-to-tarballs.py: make curl a bit more resilient against d/l problems

 tools/smoketesting/convert-to-tarballs.py |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/tools/smoketesting/convert-to-tarballs.py b/tools/smoketesting/convert-to-tarballs.py
index 0ce1827..0513ea9 100755
--- a/tools/smoketesting/convert-to-tarballs.py
+++ b/tools/smoketesting/convert-to-tarballs.py
@@ -440,7 +440,8 @@ class TarballLocator:
             if not os.path.exists(newfile) or tries != MAX_TRIES:
                 print "Downloading", filename, newfile
                 # one of those options will make Curl resume an existing download
-                cmd = ['curl', '-C', '-', '-#kRfL', '--disable-epsv',  location, '-o', newfile]
+                # speed-limit ensures 1KB/s over 30sec average (in case of connection problems)
+                cmd = ['curl', '-C', '-', '-#kRfL', '--speed-limit', '1024', '--disable-epsv',  location, '-o', newfile]
                 retcode = subprocess.call(cmd)
                 if retcode != 0:
                     # Curl gives an error when an existing file cannot be continued