As my test, that seem like the problem relate to sizing of file.
If file size more than 10M, wget session will be hang, I test to download 5 files and each file less than 10MB that is work.
But I downloaded just only one file and file size more than 10MB (about 11MB) wget session was hang and I must kill process by manually.
Anyone, Do you know about limitation or some parameter of wget command to control about this? because I read wget manual but I cannot found anything relate it.
After add -O option to wget command and I used "more" command to get information from log file and then changed it to "cat" command, the problem is gone that is very very weird.