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It's like curl -v, with colours.

License: MIT License

Go 93.90% Makefile 6.10%

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httpstat's Issues

Force ipv4 / ipv6

Hi,

It would be nice to have a -4 / -6 switch to force DNS resolution to ipv4 or ipv6.
Like this, we could compare response time between both protocol.
Regards,

Connecting to IP skips DNSDone trace hook

When connecting to an IP address, the DNSDone trace hooks aren't fired.

Revert color work-around

We should be able to revert 63dfb1c. A fix has been merged upstream.

See: fatih/color@0016e26

Do you have plan to support proxy?

But some values of fields may not be a real for latency if httpstat support proxy.

Allow writing body to stdout

I many times work with curl and pipes eg curl -v url | jq .. Why not write the current output to stderr and the body to stdout?

Https should default to secure

Currently the https client chooses to allow invalid certs (I think). If this is the case, then this should be reversed and a flag added to enable this insecure behaviour.

Note to implementors: at the moment we're using to go flag library so I would prefer this flag to be a single character and that character be the same as one traditionally used by another tool like curl or wget.

Use Github's new Projects feature

Feel free to close this issue right away. I was just thinking whether the Projects feature wouldn't be more suitable for keeping track of the TODO list (more than the README). I don't have experience with it though.

Package exists but is not a directory

I'm getting the following error trying to install this package

go get -u github.com/davecheney/httpstat
package github.com/davecheney/httpstat/vendor/github.com/fatih/color: /Users/wayne/go/src/github.com/davecheney/httpstat/vendor/github.com/fatih/color/.git exists but is not a directory
package github.com/davecheney/httpstat/vendor/golang.org/x/net/http2: /Users/wayne/go/src/github.com/davecheney/httpstat/vendor/golang.org/x/net/.git exists but is not a directory

Tried cleaning my $GOPATH and didn't make a difference.

sudo rm -r $GOPATH
mkdir $GOPATH

System Details

go version go1.8.1 darwin/amd64
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/wayne/go"
GORACE=""
GOROOT="/usr/local/Cellar/go/1.8.1/libexec"
GOTOOLDIR="/usr/local/Cellar/go/1.8.1/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/8s/j9vt85xs4ps80919tlwsxdk00000gn/T/go-build266113172=/tmp/go-build -gno-record-gcc-switches -fno-common"
CXX="clang++"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
GOROOT/bin/go version: go version go1.8.1 darwin/amd64
GOROOT/bin/go tool compile -V: compile version go1.8.1 X:framepointer
uname -v: Darwin Kernel Version 16.5.0: Fri Mar  3 16:52:33 PST 2017; root:xnu-3789.51.2~3/RELEASE_X86_64
ProductName:	Mac OS X
ProductVersion:	10.12.4
BuildVersion:	16E195
lldb --version: lldb-370.0.42
  Swift-3.1

No support for http2

httpstat master $ curl -I https://www.google.com
HTTP/2.0 302
cache-control:private
content-type:text/html; charset=UTF-8
location:https://www.google.be/?gfe_rd=cr&ei=ycnqV5PxMKGk8wfZpZmoBg
content-length:259
date:Tue, 27 Sep 2016 19:34:33 GMT
alt-svc:quic=":443"; ma=2592000; v="36,35,34,33,32"

httpstat master $ ./httpstat https://www.google.com

Connected to 216.58.212.228:443

HTTP/1.1 302 Found
Alt-Svc: quic=":443"; ma=2592000; v="36,35,34,33,32"
Cache-Control: private
Content-Length: 259
Content-Type: text/html; charset=UTF-8
Date: Tue, 27 Sep 2016 19:34:39 GMT
Location: https://www.google.be/?gfe_rd=cr&ei=z8nqV9yNHqrH8AeTm6qQCQ

  DNS Lookup   TCP Connection   TLS Handshake   Server Processing   Content Transfer
[      5ms  |          31ms  |         93ms  |             32ms  |             0ms  ]
            |                |               |                   |                  |
   namelookup:5ms            |               |                   |                  |
                       connect:36ms          |                   |                  |
                                   pretransfer:130ms             |                  |
                                                     starttransfer:162ms            |
                                                                                total:162ms

HTTP output not replacing %s

Notice this in my testing.

httpstat http://google.com

Connected to 172.217.3.206:80

HTTP/1.1 301 Moved Permanently
Server: gws
Cache-Control: public, max-age=2592000
Content-Length: 219
Content-Type: text/html; charset=UTF-8
Date: Mon, 26 Sep 2016 22:30:39 GMT
Expires: Wed, 26 Oct 2016 22:30:39 GMT
Location: http://www.google.com/
X-Frame-Options: SAMEORIGIN
X-Xss-Protection: 1; mode=block

   DNS Lookup   TCP Connection   Server Processing   Content Transfer
[ %s  |     %s  |        %s  |       %s  ]
             |                |                   |                  |
    namelookup:%s      |                   |                  |
                        connect:%s         |                  |
                                      starttransfer:%s        |
                                                                 total:%s
    110ms     23ms     34ms      0ms110ms    133ms    168ms    168ms    %

If you query with https then the output looks right.

Connected to 172.217.3.206:443

HTTP/1.1 301 Moved Permanently
Server: gws
Alt-Svc: quic=":443"; ma=2592000; v="36,35,34,33,32"
Cache-Control: public, max-age=2592000
Content-Length: 220
Content-Type: text/html; charset=UTF-8
Date: Mon, 26 Sep 2016 22:31:06 GMT
Expires: Wed, 26 Oct 2016 22:31:06 GMT
Location: https://www.google.com/
X-Frame-Options: SAMEORIGIN
X-Xss-Protection: 1; mode=block

  DNS Lookup   TCP Connection   TLS Handshake   Server Processing   Content Transfer
[      0ms  |          23ms  |        137ms  |             36ms  |             0ms  ]
            |                |               |                   |                  |
   namelookup:0ms            |               |                   |                  |
                       connect:23ms          |                   |                  |
                                   pretransfer:161ms             |                  |
                                                     starttransfer:198ms            |
                                                                                total:198ms

Colours don't work in CMD and PowerShell

CSV output

I've made some quick changes to print the results in CSV format.
I need this to investigate an issue with increasing response time and I want to know which step causes this issue.

With these changes it is possible to run httpstat in a loop and write the output to a CSV file which can than be used for analyzing.

Example

$ for i in {1..20}; do httpstat -csv https://google.com >> out.csv && sleep 2; done;

This will print lines that look like this:

2,29,224,64,0,2,32,257,321,321

The columns are in the following order (HTTPS in this case):

dns lookup
tcp connection
tls handshake
server processing
content transfer
namelookup
connect
pretransfer
starttransfer
total

I can prepare a pull request if you think this feature is useful.
The current solution is a bit quick and dirty, so I have to implement it in a proper way before.

httpstat -O should handle Content-Disposition: attachment

See TODO in main.readResponseBody

will this support IOS and Android？

Sort headers intelligently

From #16

I thought about this previously and have two suggestions.

http headers are not sorted, they probably get unsorted more in this version compared to the python version because of the way maps work in Go vs whatever curl is doing.
if we are going to sort headers, it shouldn't just be plain alpha sort, it should
- a. put Host: first
- b. sort headers first into their categories, hop by hop and end to end (https://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.5.1), then sort those alphabetically.

I know this is more work, but I think this is only worth doing if it's done to this degree of precision.

Fix vet issues

There are a bunch of small issues that vet and lint will pick up on related to printing and formatting. It would be good to have those fixed.

extra credit: add a go tool vet pass to .travis.yml so we don't have to reopen this issue once the current formatting errors are fixed.

note to implementors: I'm not interested in PR's renaming variables to whatever vet thinks is a standard, that is beyond my tolerance for bike shedding.

Suggestion: Ubuntu PPA

A PPA for debian / ubuntu would ease installation for linux users, and provide a way for linux users to stay up to date with the latest version easily.

Implement curl's -L flag

curl -L follows redirects.

Implementing this in httpstat should follow 30x redirects and print the timing output for each step in the redirection chain.

This will probably require refactoring the body of main.main into functions.

Note: for implementors, please discuss your design here before slinging code.

Support for -o and -O flags

Add support for cURLs -o and -O flags which allow saving the body into a user specified file and the URI specified file respectively. This may interact with #20 and #35.

install failed

When I use installation command, I failed.

$ go get -u github.com/davecheney/httpstat                                                                                   [10:56:20]
# github.com/davecheney/httpstat
failed MSpanList_Insert 0x7925c0 0xeb13f9b6bae5 0x0 0x0
fatal error: MSpanList_Insert

runtime stack:
runtime.throw(0x2a3330, 0x10)
        /usr/local/Cellar/go/1.6/libexec/src/runtime/panic.go:530 +0x90
runtime.(*mSpanList).insert(0x3a68a8, 0x7925c0)
        /usr/local/Cellar/go/1.6/libexec/src/runtime/mheap.go:933 +0x293
runtime.(*mheap).freeSpanLocked(0x3a60a0, 0x7925c0, 0x100, 0x0)
        /usr/local/Cellar/go/1.6/libexec/src/runtime/mheap.go:809 +0x4be
runtime.(*mheap).grow(0x3a60a0, 0x30, 0x0)
        /usr/local/Cellar/go/1.6/libexec/src/runtime/mheap.go:675 +0x2a0
runtime.(*mheap).allocSpanLocked(0x3a60a0, 0x30, 0x4c2fb20)
        /usr/local/Cellar/go/1.6/libexec/src/runtime/mheap.go:553 +0x4e3
runtime.(*mheap).alloc_m(0x3a60a0, 0x30, 0x100000000, 0x7924d0)
        /usr/local/Cellar/go/1.6/libexec/src/runtime/mheap.go:437 +0x119
runtime.(*mheap).alloc.func1()
        /usr/local/Cellar/go/1.6/libexec/src/runtime/mheap.go:502 +0x41
runtime.systemstack(0x7fff5fbfe910)
        /usr/local/Cellar/go/1.6/libexec/src/runtime/asm_amd64.s:307 +0xab
runtime.(*mheap).alloc(0x3a60a0, 0x30, 0x100000000, 0xc820022000)
        /usr/local/Cellar/go/1.6/libexec/src/runtime/mheap.go:503 +0x63
runtime.largeAlloc(0x60000, 0xc800000003, 0x4d2d0)
        /usr/local/Cellar/go/1.6/libexec/src/runtime/malloc.go:766 +0xb3
runtime.mallocgc.func3()
        /usr/local/Cellar/go/1.6/libexec/src/runtime/malloc.go:664 +0x33
runtime.systemstack(0x39f700)
        /usr/local/Cellar/go/1.6/libexec/src/runtime/asm_amd64.s:291 +0x79
runtime.mstart()
        /usr/local/Cellar/go/1.6/libexec/src/runtime/proc.go:1048

goroutine 1 [running]:
runtime.systemstack_switch()
        /usr/local/Cellar/go/1.6/libexec/src/runtime/asm_amd64.s:245 fp=0xc824a3b508 sp=0xc824a3b500
runtime.mallocgc(0x60000, 0x0, 0xc800000003, 0x8)
        /usr/local/Cellar/go/1.6/libexec/src/runtime/malloc.go:665 +0x9eb fp=0xc824a3b5e0 sp=0xc824a3b508
runtime.rawmem(0x60000, 0x2f)
        /usr/local/Cellar/go/1.6/libexec/src/runtime/malloc.go:809 +0x32 fp=0xc824a3b608 sp=0xc824a3b5e0
runtime.growslice(0x1e80a0, 0xc824ccc000, 0x4c000, 0x4c000, 0x4c001, 0x0, 0x0, 0x0)
        /usr/local/Cellar/go/1.6/libexec/src/runtime/slice.go:95 +0x233 fp=0xc824a3b678 sp=0xc824a3b608
cmd/link/internal/ld.Symgrow(0xc820082240, 0xc824a10fc0, 0x4c002)
        /usr/local/Cellar/go/1.6/libexec/src/cmd/link/internal/ld/data.go:52 +0x26e fp=0xc824a3b730 sp=0xc824a3b678
cmd/link/internal/ld.addpctab(0xc824a10fc0, 0xc80004bfbc, 0xc820ecc030, 0x4bfbc)
        /usr/local/Cellar/go/1.6/libexec/src/cmd/link/internal/ld/pcln.go:130 +0x6a fp=0xc824a3b7b0 sp=0xc824a3b730
cmd/link/internal/ld.pclntab()
        /usr/local/Cellar/go/1.6/libexec/src/cmd/link/internal/ld/pcln.go:323 +0x8d1 fp=0xc824a3b9e0 sp=0xc824a3b7b0
cmd/link/internal/ld.Ldmain()
        /usr/local/Cellar/go/1.6/libexec/src/cmd/link/internal/ld/pobj.go:241 +0x1f33 fp=0xc824a3be60 sp=0xc824a3b9e0
cmd/link/internal/amd64.Main()
        /usr/local/Cellar/go/1.6/libexec/src/cmd/link/internal/amd64/obj.go:44 +0x19 fp=0xc824a3be68 sp=0xc824a3be60
main.main()
        /usr/local/Cellar/go/1.6/libexec/src/cmd/link/main.go:27 +0x36f fp=0xc824a3bf40 sp=0xc824a3be68
runtime.main()
        /usr/local/Cellar/go/1.6/libexec/src/runtime/proc.go:188 +0x2b0 fp=0xc824a3bf90 sp=0xc824a3bf40
runtime.goexit()
        /usr/local/Cellar/go/1.6/libexec/src/runtime/asm_amd64.s:1998 +0x1 fp=0xc824a3bf98 sp=0xc824a3bf90

I install go using homebrew

$ go version                                                                                                                 [22:45:15]
go version go1.6 darwin/amd64

Handle urls without a scheme

httpstat http://dave.cheney.net/about works

httpstat dave.cheney.net/about does not.

2016/09/24 13:54:20 unsupported url scheme ""

To make httpstat easier to use, if no scheme is provided, stick a https:// on the front. Yes, https://, if people want to be insecure, they can be explicit.

os.Exit used in flag.Usage

By coincidence I read through this code, and shortly after that read Idiomatic Go. There was one practice highlighted there that I had just seen in this code.

In flag.Usage os.Exit(2) is called, which flag.Parse already does. It would be nicer to do this within the if len(args) != 1 instead of within func usage().

Move headers type to separate files

I think, one should move all headers type logic to separate file for convenience.

wrong variable used when creating error on file creation

I've found that when we return an error on file creation we are actually using the wrong variable (outputFile). We should be using filename instead:

httpstat/main.go

Line 421 in fb43abf

log.Fatalf("unable to create file %s", outputFile)

Make multiple requests to measure ssl resume gains

It would be nice if the client allowed multiple requests with the same ssl session id so it would be possible to measure the impact of ssl tickets / ssl resume.

Limit the number of 30x follows

Introduce the -max-directs flag from curl to limit the maximum number for 30x redirects to follow and set a sane default. cURL sets this to 50.

Support for @filename in -d parameter

Hi,

curl(1) let you post data from files using -d @filename. I use it all the time missed this feature when working with httpstat.

If you think this is a relevant addition I can make a pull request.

The changes I made for this to work are here: https://github.com/lucindo/httpstat/commit/87c4d32f548248dcbe11d3501b4ed706656474fe

Get only header

Hi! How about a flag, that will show only header of response like curl --head.

Use TLS server name indication

https://github.com/davecheney/httpstat/blob/master/main.go#L134 should set ServerName in tls.Config.

This would make it possible to use this tool with hosting situations where multiple sites share the same IP and there is no fallback.

(Option to) show which IP is being connected to

My applications often have numerous IPs (CDNs, etc), so showing which IP is being connected to is helpful.

(Along the same lines, an option to connect to a particular IP could also be helpful; along the lines of the -x or --resolv options from curl).

realtime sharing of stat results

would be interesting to have realtime sharing of stats to have more data points when troubleshooting a site. e.g. how did this test compare with others from your AS over the past day, or compared to other ASs, historical error rates. sort of how speedtest.net allows you to see how your download speeds compare to others. would be nice if there was an existing free service that it could just integrate like downdetector.com or netcraft.com, but they don't have free APIs.

SSL/TLS Handshake Latency

It would be really good to have the SSL/TLS handshake latency.

Analyzing HTTP timeouts

I would like to use httpstat to analyze sporadic HTTP timeouts I'm experiencing in my application when calling a backend HTTP API. The problem is that when httpstat experiences timeouts the output looks like this:

$ httpstat http://localhost:8000/delay/999999

Connected to 127.0.0.1:8000
2018/07/30 08:52:39 failed to read response: Get http://localhost:8000/delay/999999: EOF

What I would like to see as output is the trace including DNS Lookup, TCP Connection, etc. up to the point where the timeout occured. Is that something that could be implemented in httpstat? If yes, I would be willing to help here.

Increase separation of concerns in colour formatting code

Currently the formatting of coloured output is handled before passing the string to fmt.Printf. As an exercise I would like to see if it is possible to make the type of the argument passed to fmt.Printf implement fmt.Formatter and handle the colorisation of the output at the point at which it is printed.

note to implementors: this has no impact on the performance or memory usage of this program, in fact it'll probably make it infinitesimally slower and larger. I'm mainly interested in exploring this to improve the separation of concerns between the code that prepares the output, and the code that colourises it.

Is there a speed_download size_download for curl?

size_download (The total amount of bytes that were downloaded.)

size_upload (The total amount of bytes that were uploaded.)

speed_download (The average download speed that curl measured for the complete download. Bytes per second.)

-H does not replace Host header

Request send to remote host from following command:
httpstat -H 'Host: example.com' http:/example2.com

Contains:
Host: example2.com
header but not:
Host: example.com

Too many colons

First, this is awesome, thanks for making a Go version of this!

But it doesn't like when I need to specify a port:

httpstat "http://45.56.15.67:8680/"
2016/09/23 09:03:11 unable to resolve host: too many colons in address 45.56.15.67:8680:80

(Believe me, I wish this was just on port 80 like every other website. But I'm having connectivity issues to it which is why I thought I'd try httpstat, ha.)

http2 tracing is broken on windows

I'm testing httpstat on a Windows machine and I get a huge TCP Connection time.

D:\>httpstat http://139.110.74.200/dsrv/status

Connected to 139.110.74.200:80

HTTP/1.1 200 OK
Server: Apache/2.4.6 (Red Hat Enterprise Linux) PHP/5.4.16
Content-Type: text/xml
Date: Thu, 11 Aug 2016 09:36:27 GMT
X-Powered-By: PHP/5.4.16

Body discarded

   DNS Lookup   TCP Connection   Server Processing   Content Transfer
[       0ms  |     9223372036854ms  |              9ms  |             1ms  ]
             |                |                   |                  |
    namelookup:0ms            |                   |                  |
                        connect:9223372036854ms         |                  |
                                      starttransfer:9223372036854ms        |
                                                                 total:922337203
6854ms

I have tried changing the HTTP_PROXY variable and when using a local cntlm proxy it goes back to something reasonable:

D:\>set HTTP_PROXY=localhost:3128

D:\>set HTTPS_PROXY=localhost:3128

D:\>httpstat http://139.110.74.200/dsrv/status

Connected to 127.0.0.1:3128

HTTP/1.1 200 OK
Server: Apache/2.4.6 (Red Hat Enterprise Linux) PHP/5.4.16
Accept-Ranges: none
Content-Length: 415
Content-Type: text/xml
Date: Thu, 11 Aug 2016 09:43:50 GMT
Proxy-Connection: close
Via: 1.1 gproxy.postal.local:8080
X-Powered-By: PHP/5.4.16

Body discarded

   DNS Lookup   TCP Connection   Server Processing   Content Transfer
[       0ms  |           0ms  |             29ms  |             0ms  ]
             |                |                   |                  |
    namelookup:0ms            |                   |                  |
                        connect:0ms               |                  |
                                      starttransfer:29ms             |
                                                                 total:29ms

I can provide additional information if needed.

(Thanks for this tool, it is awesome !)

httpstat -O http://example.com/ fails to create file

% httpstat -O http://example.com/

Connected to 93.184.216.34:80
2016/09/25 21:01:06 unable to create file

If the URI ends in a / we should either refuse to create the file, or substitute something else.

error happened where build!

main.go:357: undefined: http.MethodHead

$ go version
go version go1.3.1 linux/amd64

httptrace does not break out each leg of a 30x redirect chain.

With #7 merged only the final leg of a 30x redirect chain is reported. This is a regression.

zapf(~/src/github.com/davecheney/httpstat) % httpstat -L https://google.com/

Connected to 216.58.199.78:443

Connected to 150.101.161.207:443

HTTP/1.1 200 OK
Server: gws
Alt-Svc: quic=":443"; ma=2592000; v="36,35,34,33,32"
Cache-Control: private, max-age=0
Content-Type: text/html; charset=ISO-8859-1
Date: Wed, 28 Sep 2016 01:59:28 GMT
Expires: -1
P3p: CP="This is not a P3P policy! See https://www.google.com/support/accounts/answer/151657?hl=en for more info."
Set-Cookie: NID=87=AW23QT-3Jr7sBhWZfUORexa_5nsDTXe9jp2iNKYKemqJlG7tM_LdEvqz1UZtUZ57QYm4PaoHrAlGpT_-S9KOC0Kg-xaozwQrdK3AoLwB7XWRQ6hrIrjndWgoQUiF695C; expires=Thu, 30-Mar-2017 01:59:28 GMT; path=/; domain=.google.com.au; HttpOnly
X-Frame-Options: SAMEORIGIN
X-Xss-Protection: 1; mode=block

Body discarded

  DNS Lookup   TCP Connection   TLS Handshake   Server Processing   Content Transfer
[     23ms  |          21ms  |         61ms  |            201ms  |             3ms  ]
            |                |               |                   |                  |
   namelookup:23ms           |               |                   |                  |
                       connect:44ms          |                   |                  |
                                   pretransfer:106ms             |                  |
                                                     starttransfer:307ms            |
                                                                                total:310ms

Grayscale looks not so legibly on white backgrounded ttys

I have white background in my terminal and text with grayscale looks not so good on it:

Instead of that, I offer to use usual black text.
And technically httpstat will be more simplier :)

go get is failing

I am trying to build httpstat with go get -v -u github.com/davecheney/httpstat and it is failing. I am using go version go1.9 linux/amd64:

$ go get -v -u github.com/davecheney/httpstat
github.com/davecheney/httpstat (download)
github.com/davecheney/httpstat/vendor/github.com/fatih/color (download)
package github.com/davecheney/httpstat/vendor/github.com/fatih/color: /home/aitva/go/src/github.com/davecheney/httpstat/vendor/github.com/fatih/color/.git exists but is not a directory
github.com/davecheney/httpstat/vendor/golang.org/x/net (download)
package github.com/davecheney/httpstat/vendor/golang.org/x/net/http2: /home/aitva/go/src/github.com/davecheney/httpstat/vendor/golang.org/x/net/.git exists but is not a directory

On the upside, if I run go install github.com/davecheney/httpstat the build works properly! The vendored folders are cloned and go get is right about .git being a file:

~/go/src/github.com/davecheney/httpstat/vendor/github.com/fatih/color$ ls -la
total 72
drwxrwxr-x 3 aitva aitva  4096 sept. 20 11:00 .
drwxrwxr-x 3 aitva aitva  4096 sept. 20 11:00 ..
-rw-rw-r-- 1 aitva aitva 18220 sept. 20 11:00 color.go
-rw-rw-r-- 1 aitva aitva  8491 sept. 20 11:00 color_test.go
-rw-rw-r-- 1 aitva aitva  4397 sept. 20 11:00 doc.go
-rw-rw-r-- 1 aitva aitva    63 sept. 20 11:00 .git
-rw-rw-r-- 1 aitva aitva  1079 sept. 20 11:00 LICENSE.md
-rw-rw-r-- 1 aitva aitva  4691 sept. 20 11:00 README.md
-rw-rw-r-- 1 aitva aitva    35 sept. 20 11:00 .travis.yml
drwxrwxr-x 4 aitva aitva  4096 sept. 20 11:00 vendor

Binary release

Can someone upload a binary for people that do not have/use Go?

Support curl's -H name=value header field

Needs to support multiple -H name=value fields.

Schemify for HTTP only works for URIs ending in :80

Maybe this isn't supposed to work. Just read the source.

In function schemify the strings.HasSuffix(uri, ":80") does not work for host:80/path.

-O / `saveOutput` saves a file for every redirect as well as final response

Tested against a server that redirects, httpstat -O wrote one file for each request using that request's URL to determine the output filename.

Possibly don't want to write multiple files if server redirects.
Possibly don't want filename to be controlled by response.

Can't connect to host if it can't work with HTTPS

I can't connect to host, if it works only with HTTP, without obvious declaration of protocol:

http2 GOAWAY support

When I try to use httpstat on service with HTTP/2 I got following error:

http2: server sent GOAWAY and closed the connection; LastStreamID=0, ErrCode=NO_ERROR, debug=""

support for client certificate tls authentication

I use tls client certificates for authentication to several web services I develop/debug. I am wondering if it would be helpful to add client certificate support to httpstat. This feature would be easy to implement. I would suggest we load a client certificate keypair and signing ca certificate from files that would be specified as command line flags into the http client's tls.Config. I have this implemented if this feature is of interest. Thanks!