handle Body return EOF

[disilin]

handle Body will return EOF when it used in middleware.

• With pull requests:
  • Open your pull request against master
  • Your pull request should have no more than two commits, if not you should squash them.
  • It should pass all tests in the available continuous integrations systems such as TravisCI.
  • You should add/modify tests to cover your proposed code changes.
  • If your pull request contains a new feature, please document it on the README.

[codecov]

Codecov Report

Merging #1810 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1810      +/-   ##
==========================================
+ Coverage   98.62%   98.62%   +<.01%     
==========================================
  Files          41       41              
  Lines        2113     2115       +2     
==========================================
+ Hits         2084     2086       +2     
  Misses         18       18              
  Partials       11       11

Impacted Files	Coverage Δ
context.go	98.38% <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 e526148...af0276f. Read the comment docs.

[vkd]

I think it will be better if you add a test that cover your changes.

[dmarkham]

@disilin Thank you for this patch, I'm interested in why this is a good idea. Using any Bind will always consume c.Request.Body. I understand ShouldBindBodyWith is set up to be called more than once. After reading though (#216) to get some context on why people wanted this at all. I'm interested in why you would want to use a Bind method and still want to use c.Request.Body.

So why would we want to make this one bind method even more different that all the others?

As a side note for @thinkerou @appleboy I think we should deprecate ShouldBindBodyWith. The name is confusing, the interface it's using is also named wrong, BindBody interface is documented to do everything except bind with a body. BindBytes would have been more clear for people.

[dmarkham]

I'm also a little concerned the Handler is pretty well documented and discourages us from changing the request. It might not matter now, but I think this would be us clearly breaking that "rule"

https://golang.org/pkg/net/http/#Handler
Except for reading the body, handlers should not modify the provided Request.

[TonyPythoneer]

@thinkerou @appleboy please review this MR.

I agree @dmarkham : handlers should not modify the provided Request.

I have the same confused about it when I invoke bind function with req, the req will be empty buffer object. I think it’s should get fiexed.

[TonyPythoneer]

@disilin Could you add testcase for this? It good to reviewer to understand your changing and ensure the framework is still stable for gin user. We will thank you.

[daheige]

LGTM

[appleboy]

@disilin Please add some unit testing.

[thinkerou]

@disilin Please add some unit testing.

still need, move to 1.10

[appleboy]

move to 1.11