/info api returns with unicode back spaces

[u2mejc]

When calling the api request for /info, unicode \b chars in ascii are sent.

Background, built today:

$ docker version
Client:
 Version:      1.9.0-dev
 API version:  1.21
 Go version:   go1.4.2
 Git commit:   743dc1c
 Built:        Mon Sep 21 13:20:09 UTC 2015
 OS/Arch:      linux/amd64

Server:
 Version:      swarm/0.5.0-dev
 API version:  1.16
 Go version:   go1.5.1
 Git commit:   HEAD
 Built:        
 OS/Arch:      linux/amd64

$ docker info
Containers: 38
Images: 4
Role: primary
Strategy: spread
Filters: affinity, health, constraint, port, dependency
Nodes: 1
 ip-192-168-100-206: 192.168.100.206:2375
  └ Containers: 38
  └ Reserved CPUs: 0 / 1
  └ Reserved Memory: 0 B / 2.051 GiB
  └ Labels: executiondriver=native-0.2, kernelversion=3.13.0-62-generic, operatingsystem=Ubuntu 14.04.2 LTS, storagedriver=aufs
CPUs: 1
Total Memory: 2.051 GiB
Name: go-devil-flathead

When I use curl, I'm getting a malformed string back: (including unicode backspaces "\u0008")

$ curl -v localhost:2375/v1.20/info
* Hostname was NOT found in DNS cache
*   Trying 127.0.0.1...
* Connected to localhost (127.0.0.1) port 2375 (£0)
> GET /v1.20/info HTTP/1.1
> User-Agent: curl/7.35.0
> Host: localhost:2375
> Accept: */*
> 
< HTTP/1.1 200 OK
< Content-Type: application/json
< Date: Thu, 24 Sep 2015 21:26:32 GMT
< Content-Length: 945
< 
{"ID":"","Containers":38,"Driver":"","DriverStatus":[["\u0008Role","primary"],["\u0008Strategy","spread"],["\u0008Filters","affinity, health, constraint, port, dependency"],["\u0008Nodes","1"],["ip-192-168-100-206","192.168.100.206:2375"],[" └ Containers","38"],[" └ Reserved CPUs","0 / 1"],[" └ Reserved Memory","0 B / 2.051 GiB"],[" └ Labels","executiondriver=native-0.2, kernelversion=3.13.0-62-generic, operatingsystem=Ubuntu 14.04.2 LTS, storagedriver=aufs"]],"ExecutionDriver":"","Images":4,"KernelVersion":"","OperatingSystem":"","NCPU":1,"MemTotal":2202568704,"Name":"ip-192-168-100-251","Labels":null,"Debug":false,"NFd":0,"NGoroutines":0,"SystemTime":"2015-09-24T21:26:32.185780176Z","NEventsListener":0,"InitPath":"","InitSha1":"","IndexServerAddress":"","MemoryLimit":true,"SwapLimit":true,"IPv4Forwarding":true,"BridgeNfIptables":true,"BridgeNfIp6tables":true,"DockerRootDir":"","HttpProxy":"","HttpsProxy":"","NoProxy":""}

The string [to me] looks like copypasta from something and I created a PR to remove these characters that does not impact the cli. This is chipping away at the larger issue that this API call is simply calling the cli functions instead of the cli and api having a shared generic function (discussed here: #1214).

[vieux]

Hello @u2mejc, see my answer in #1147

[abronan]

Closing as a duplicate of #1214.