This patch fixes the problem of connection errors in the Esri ArcGIS "Validate Cache Tool" of Tom Brenneman. The original tool can be found here: http://resources.arcgis.com/gallery/file/enterprise-gis/details?entryID=632A4F2B-1422-2418-34C2-3BC3E9F063ED

Validate Cache Tool Patch

try:
  response = conn.getresponse() # line 244 in original findBadTiles.py
except:
  # re-open connection
  conn = httplib.HTTPConnection(parsedUrl.netloc)
  conn.request("GET", partTileURL, headers=txtheaders)
  response = conn.getresponse()

To apply the patch, find line 244 in the original findBadTiles.py script. The line should be the same as line 2 in this gist. Replace line 244 with the lines of this gist and be sure that the indentation is correct after you pasted these lines. Connection errors should be gone.