refactor(client): create createSocketUrl module into utils

[hiroppy]

• This is a bugfix
• This is a feature
• This is a code refactor
• This is a test update
• This is a docs update
• This is a metadata update

For Bugs and Features; did you add new tests?

refactoring, yep

Motivation / Use-Case

refactoring client code

Breaking Changes

no

Additional Info

Perhaps existing code seems to have bugs in some patterns. (or my sample URLs are bad😉) See the result of snapshots. Let's fix it with other PR.

[codecov]

Codecov Report

Merging #1954 into master will increase coverage by 0.27%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1954      +/-   ##
==========================================
+ Coverage   91.91%   92.19%   +0.27%     
==========================================
  Files          23       24       +1     
  Lines         903      935      +32     
  Branches      283      297      +14     
==========================================
+ Hits          830      862      +32     
  Misses         70       70              
  Partials        3        3

Impacted Files	Coverage Δ
client-src/default/utils/createSocketUrl.js	100% <100%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 9a1ad89...6978c28. Read the comment docs.

[hiroppy]

Node6 has errors about the file protocol.

sample: file://filename
node6: file:/sockjs-node
other: file:///sockjs-node

sample: file:///etc/file
node6: file:/sockjs-node
other: file:///sockjs-node

[alexander-akait]

Let's comment file right now and add TODO about enable this for next major release

[hiroppy]

@evilebottnawi PTAL