Hi all! Alexander, thanks for review. Vlad, can you do a second review, 
please?

On 05.02.2019 7:40, Alexander Turenko wrote:
> The commit message header:
> 
>> httpc: set reason when status is more than 400
> More or equal.
> 
>> Set the reason "Unknown" when it is CURLE_OK and status is more than 
>> 400.
▲        ▲        ▲
Done.
> The >= 100 condition is matter too.
> https://curl.haxx.se/libcurl/c/CURLINFO_RESPONSE_CODE.html states you
> can get zero as a code if 'no server response code has been received'.
> Don't sure how to reproduce this case, but anyway I think the commit
> message (and the header) should be either describe the whole change or
> be a bit more common. Say:
> 
> ```
> httpc: set 'Unknown' reason for 0, 4xx, 5xx codes
> ```
▲        ▲        ▲

Done.


> Why this order? req->status >= 100 && req->status < 400 reads more
> easily.

Done.

commit a39ede25caef257fdc99b7896abb31557773e7f5
Author: Roman Khabibov <roman.habibov@tarantool.org>
Date:   Mon Feb 4 16:28:30 2019 +0300

    httpc: set 'Unknown' reason for 0, 4xx, 5xx codes

    Set the reason "Unknown" when it is CURLE_OK and status is more 
than or equal
    to 400.

    Closes #3681

diff --git a/src/httpc.c b/src/httpc.c
index 950f8b32f..1f9366982 100644
--- a/src/httpc.c
+++ b/src/httpc.c
@@ -325,8 +325,12 @@ httpc_execute(struct httpc_request *req, double 
timeout)
 	case CURLE_OK:
 		curl_easy_getinfo(req->curl_request.easy, CURLINFO_RESPONSE_CODE, 
&longval);
 		req->status = (int) longval;
-		/* TODO: get real response string from resp->headers */
-		req->reason = "Ok";
+
+		if (req->status >= 100 && req->status < 400)
+			req->reason = "Ok";
+		else
+			req->reason = "Unknown";
+
 		if (req->status == 200) {
 			++env->stat.http_200_responses;
 		} else {
diff --git a/test/app-tap/http_client.test.lua 
b/test/app-tap/http_client.test.lua
index 10a3728f8..d4f3a9f45 100755
--- a/test/app-tap/http_client.test.lua
+++ b/test/app-tap/http_client.test.lua
@@ -62,12 +62,13 @@ local function stop_server(test, server)
 end

 local function test_http_client(test, url, opts)
-    test:plan(9)
+    test:plan(10)

     test:isnil(rawget(_G, 'http'), "global namespace is not polluted");
     test:isnil(rawget(_G, 'http.client'), "global namespace is not 
polluted");
     local r = client.get(url, opts)
     test:is(r.status, 200, 'simple 200')
+    test:is(r.reason, 'Ok', '200 - Ok')
     test:is(r.proto[1], 1, 'proto major http 1.1')
     test:is(r.proto[2], 1, 'proto major http 1.1')
     test:ok(r.body:match("hello") ~= nil, "body")
@@ -104,7 +105,7 @@ local function test_cancel_and_errinj(test, url, 
opts)
 end

 local function test_post_and_get(test, url, opts)
-    test:plan(19)
+    test:plan(21)

     local http = client.new()
     test:ok(http ~= nil, "client is created")
@@ -159,6 +160,7 @@ local function test_post_and_get(test, url, opts)

     r = responses.absent_get
     test:is(r.status, 500, "GET: absent method http code page exists")
+    test:is(r.reason, 'Unknown', '500 - Unknown')
     test:is(r.body, "No such method", "GET: absent method right body")

     r = responses.empty_post
@@ -180,6 +182,7 @@ local function test_post_and_get(test, url, opts)

     r = responses.bad_get
     test:is(r.status, 404, "GET: http page not exists")
+    test:is(r.reason, 'Unknown', '404 - Unknown')
     test:isnt(r.body:len(), 0, "GET: not empty body page not exists")
     test:ok(string.find(r.body, "Not Found"),
                 "GET: right body page not exists")