Check client disconnect to exit for loop (api). Fixes #1983 (#2012)

Also update to latest melody upstream

go.sum

@@ -1246,6 +1246,8 @@ github.com/nxadm/tail v1.4.8/go.mod h1:+ncqLTQzXmGhMZNUePPaPqPvBxHAIsmXswZKocGu+
 github.com/oklog/run v1.0.0/go.mod h1:dlhp/R75TPv97u0XWUtDeV/lRKWPKSdTuV0TZvrmrQA=
 github.com/oklog/run v1.1.0/go.mod h1:sVPdnTZT1zYwAJeCMu2Th4T21pA3FPOQRfWjQlk7DVU=
 github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
+github.com/olahol/melody v1.1.2 h1:9PZ5kYv/CUy0PRZcJCKja1MUxAh6olVeHkyqaQxO7n0=
+github.com/olahol/melody v1.1.2/go.mod h1:GgkTl6Y7yWj/HtfD48Q5vLKPVoZOH+Qqgfa7CvJgJM4=
 github.com/olekukonko/tablewriter v0.0.0-20170122224234-a0225b3f23b5/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXWMclvtLoiIKAKIo=
 github.com/olekukonko/tablewriter v0.0.0-20180506121414-d4647c9c7a84/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXWMclvtLoiIKAKIo=
 github.com/olekukonko/tablewriter v0.0.4/go.mod h1:zq6QwlOf5SlnkVbMSr5EoBv3636FWnp+qbPhuoO21uA=
@@ -2465,8 +2467,6 @@ gopkg.in/mgo.v2 v2.0.0-20180705113604-9856a29383ce/go.mod h1:yeKp02qBN3iKW1OzL3M
 gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22/go.mod h1:yeKp02qBN3iKW1OzL3MGk2IdtZzaj7SFntXj72NppTA=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0 h1:1Lc07Kr7qY4U2YPouBjpCLxpiyxIVoxqXgkXLknAOE8=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
-gopkg.in/olahol/melody.v1 v1.0.0-20170518105555-d52139073376 h1:sY2a+y0j4iDrajJcorb+a0hJIQ6uakU5gybjfLWHlXo=
-gopkg.in/olahol/melody.v1 v1.0.0-20170518105555-d52139073376/go.mod h1:BHKOc1m5wm8WwQkMqYBoo4vNxhmF7xg8+xhG8L+Cy3M=
 gopkg.in/olivere/elastic.v6 v6.2.35/go.mod h1:2cTT8Z+/LcArSWpCgvZqBgt3VOqXiy7v00w12Lz8bd4=
 gopkg.in/olivere/elastic.v6 v6.2.37/go.mod h1:2cTT8Z+/LcArSWpCgvZqBgt3VOqXiy7v00w12Lz8bd4=
 gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=