Server can handle POST and File type is zip and able to upload through DHC client sucessfully, But facing issues while running the script in neo load only (can ignore of txt file as of now, because issues is facing of file type zip)

And also is there any option in neo load as to pass the file in request as zip file (with out reading the content in the zip file), As of now I'm observing the request the complete zip file it is reading, because our zip files is having a password concept. So our requirement is not to read or unzip the file content, just it should pass the complete zip file with out reading

FYI..
When we tried with passing with below cases with different header parameters observing different errors:
Case 1:
Request Headers:
FileType zip
Content-Type application/x-www-form-urlencoded
Getting below response.

HTTP/1.1 500 Internal Server Error
Server: Apache-Coyote/1.1
Content-Type: application/json
Content-Length: 129
Date: Thu, 18 Jun 2015 14:01:56 GMT
Connection: close

{"Code":"11","Message":"Unknown Error","Reason":"Expected central directory entry not found (#1)"

Case 2:
Request Headers:
FileType zip
Content-Type Multipart/Form-Data

Getting below error

Error detected by NeoLoad
Error Code: NL-NETWORK-01 Message: Network error: An IO error occurred sending the request. Details: java.net.SocketException: Connection reset by peer: socket write error
Please refer to the documentation for further details and advice

Thanks Nouredine, It worked through Proxy settings only. Able to upload the zip files through neo load. Now the question is during the test execution we would like to pass more than thousand files, so please suggest us on the steps for parameterization for the source file path option, so that we can run concurrent users test. Please suggest!