fix(reporter/http): read response body

[MaineK00n]

If this Pull Request is work in progress, Add a prefix of “[WIP]” in the title.

What did you implement:

Fixes #2105

In the current implementation, the response body is not completely read, which can result in the connection being cut off while the Response Writer is still writing. This PR will fix this so that the entire response body is read.

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

$ cat config.toml
...
[http]
url = "http://localhost:5515/vuls"
...

$ vuls server -listen localhost:5515
$ vuls report -to-http

before

$ vuls server -listen localhost:5515
...
[Jan 17 10:45:50]  INFO [localhost] vagrant: 0 CVEs are detected with OVAL
[Jan 17 10:45:50]  INFO [localhost] vagrant: 0 unfixed CVEs are detected with gost
[Jan 17 10:45:50]  INFO [localhost] Fill CVE detailed with gost
[Jan 17 10:45:50]  INFO [localhost] Fill CVE detailed with CVE-DB
[Jan 17 10:45:50]  INFO [localhost] vagrant: 0 PoC detected
[Jan 17 10:45:51]  INFO [localhost] vagrant: 0 exploits are detected
[Jan 17 10:45:51]  INFO [localhost] vagrant: Known Exploited Vulnerabilities are detected for 0 CVEs
[Jan 17 10:45:51]  INFO [localhost] vagrant: Cyber Threat Intelligences are detected for 0 CVEs
[Jan 17 10:45:51]  INFO [localhost] vagrant: total 2217 CVEs detected
[Jan 17 10:45:51]  INFO [localhost] vagrant: 0 CVEs filtered by --confidence-over=80
[Jan 17 10:47:04] ERROR [localhost] Failed to report. err: write tcp 127.0.0.1:5515->127.0.0.1:46836: write: connection reset by peer

after

$ vuls server -listen localhost:5515
...
[Jan 17 12:53:59]  INFO [localhost] vagrant: 0 CVEs are detected with OVAL
[Jan 17 12:53:59]  INFO [localhost] vagrant: 0 unfixed CVEs are detected with gost
[Jan 17 12:53:59]  INFO [localhost] Fill CVE detailed with gost
[Jan 17 12:53:59]  INFO [localhost] Fill CVE detailed with CVE-DB
[Jan 17 12:54:00]  INFO [localhost] vagrant: 0 PoC detected
[Jan 17 12:54:00]  INFO [localhost] vagrant: 0 exploits are detected
[Jan 17 12:54:00]  INFO [localhost] vagrant: Known Exploited Vulnerabilities are detected for 0 CVEs
[Jan 17 12:54:00]  INFO [localhost] vagrant: Cyber Threat Intelligences are detected for 0 CVEs
[Jan 17 12:54:00]  INFO [localhost] vagrant: total 2217 CVEs detected
[Jan 17 12:54:00]  INFO [localhost] vagrant: 0 CVEs filtered by --confidence-over=80

Checklist:

You don't have to satisfy all of the following.

• Write tests
• Write documentation
• Check that there aren't other open pull requests for the same issue/feature
• Format your source code by make fmt
• Pass the test by make test
• Provide verification config / commands
• Enable "Allow edits from maintainers" for this PR
• Update the messages below

Is this ready for review?: YES

Reference

[shino]

Nice fix!!