Problems with CodecZlib

General Usage
1

I’m unable to build CodecZlib (required for DataFrames). I get the error below. Any ideas on what I need to do to fix this problem?

julia> Pkg.build("CodecZlib")
INFO: Building CodecZlib
Info: Downloading https://github.com/bicycle1885/ZlibBuilder/releases/downl
oad/v1.0.0/Zlib.x86_64-w64-mingw32.tar.gz to C:\Users\jcarey\.julia\v0.6\Co
decZlib\deps\usr\downloads\Zlib.x86_64-w64-mingw32.tar.gz...
Exception setting "SecurityProtocol": "Cannot convert null to type "System
.Net.SecurityProtocolType" due to invalid enumeration values. Specify one
of the following enumeration values and try again. The possible enumeratio
n values are "Ssl3, Tls"."
At line:1 char:35
+ [System.Net.ServicePointManager]:: <<<< SecurityProtocol =
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : PropertyAssignmentException

Exception calling "DownloadFile" with "2" argument(s): "The underlying con
nection was closed: An unexpected error occurred on a send."
At line:4 char:24
+ $webclient.DownloadFile <<<< ("https://github.com/bicycle1885/ZlibBuilde
r/releases/download/v1.0.0/Zlib.x86_64-w64-mingw32.tar.gz", "C:\Users\jcar
ey\.julia\v0.6\CodecZlib\deps\usr\downloads\Zlib.x86_64-w64-mingw32.tar.gz
")
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationExcep
   tion
    + FullyQualifiedErrorId : DotNetMethodException

===========================[ ERROR: CodecZlib ]============================


LoadError: Could not download https://github.com/bicycle1885/ZlibBuilder/re
leases/download/v1.0.0/Zlib.x86_64-w64-mingw32.tar.gz to C:\Users\jcarey\.j
ulia\v0.6\CodecZlib\deps\usr\downloads\Zlib.x86_64-w64-mingw32.tar.gz
while loading C:\Users\jcarey\.julia\v0.6\CodecZlib\deps\build.jl, in expre
ssion starting on line 92

===========================================================================


=============================[ BUILD ERRORS ]==============================


WARNING: CodecZlib had build errors.

 - packages with build errors remain installed in C:\Users\jcarey\.julia\v0
.6
 - build the package(s) and all dependencies with `Pkg.build("CodecZlib")`
 - build a single package by running its `deps/build.jl` script

===========================================================================
2

is the first thing I would try (as suggested by the error), in case it was a one-time network glitch. Otherwise, see if there is an existing issue for CodecZlib, and if not, consider opening one.

3

Thanks - I have tried repeating the build multiple times, but no changes. I’ll open an issue and follow up here in case anyone experiences the same problem.

2 Likes
4

For anyone experiencing the same problem, follow the issue here:

https://github.com/bicycle1885/CodecZlib.jl/issues/18

5

I think you need to apply the easy fix as shown in Update to enable TLS 1.1 and TLS 1.2 as default secure protocols in WinHTTP in Windows.

6

Installing the easy fix did not solve the problem for me. I had to manually install Powershell 3.
See https://github.com/JuliaLang/julia/issues/26459#issuecomment-373117374 for reference
I hope that helps.

1 Like
7

Thanks for your replies. @kristoffer.carlsson - I have already installed the easy fix.

@Rudi79 that seems to be the problem. I’ll follow up once I’ve convinced my company to upgrade my powershell.

For those of us who are forced to use windows on a corporate computer, is there a “nicer” way to get around this problem? For example, could this download method check for power shell version 3 or higher, and if not available proceed with some alternative download method? I am pretty ignorant about network protocols, but is it possible for download to be written in native Julia?

8

The problem was with the version of Powershell. I had version 2, and after installing Powershell 3 as @Rudi79 recommended, I was able to build CodecZlib.

2 Likes