Update vendor folder

2019-10-05 12:01:51 +02:00 · 2019-10-05 12:01:51 +02:00 · 240deb0607
commit 240deb0607
parent 8ec19e2db2
38 changed files with 688 additions and 245 deletions
--- a/go.mod
+++ b/go.mod
@ -5,13 +5,16 @@ go 1.12
 require (
 	github.com/0xAX/notificator v0.0.0-20171022182052-88d57ee9043b
 	github.com/erroneousboat/termui v0.0.0-20170923115141-80f245cdfa04
-	github.com/gorilla/websocket v1.4.0 // indirect
+	github.com/gorilla/websocket v1.4.1 // indirect
+	github.com/kr/pretty v0.1.0 // indirect
 	github.com/maruel/panicparse v1.1.1 // indirect
 	github.com/mattn/go-runewidth v0.0.3
 	github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7 // indirect
-	github.com/nlopes/slack v0.5.1-0.20190515005541-e2954b1409b0
+	github.com/nlopes/slack v0.6.0
 	github.com/nsf/termbox-go v0.0.0-20180819125858-b66b20ab708e
 	github.com/pkg/errors v0.8.1 // indirect
 	github.com/renstrom/fuzzysearch v1.0.1
-	github.com/stretchr/testify v1.3.0 // indirect
+	github.com/stretchr/testify v1.4.0 // indirect
+	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
+	gopkg.in/yaml.v2 v2.2.4 // indirect
 )
--- a/go.sum
+++ b/go.sum
@ -1,28 +1,42 @@
 github.com/0xAX/notificator v0.0.0-20171022182052-88d57ee9043b h1:Sn+u6zpXFyfm2X7ruh+z6SJiUVyFg8YElh6HIOhrRCA=
 github.com/0xAX/notificator v0.0.0-20171022182052-88d57ee9043b/go.mod h1:NtXa9WwQsukMHZpjNakTTz0LArxvGYdPA9CjIcUSZ6s=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/erroneousboat/termui v0.0.0-20170923115141-80f245cdfa04 h1:DaFwoQC0Neeb2y2CVFxDPrS1BeyWAkKc4VVBDTZ0N98=
 github.com/erroneousboat/termui v0.0.0-20170923115141-80f245cdfa04/go.mod h1:UPpsbgDrqmUayOFOkCGD7+xrBIml/1dA0dsqTRnZqac=
 github.com/gorilla/websocket v1.2.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
-github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
-github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
+github.com/gorilla/websocket v1.4.1 h1:q7AeDBpnBk8AogcD4DSag/Ukw/KV+YhzLj2bP5HvKCM=
+github.com/gorilla/websocket v1.4.1/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/maruel/panicparse v1.1.1 h1:k62YPcEoLncEEpjMt92GtG5ugb8WL/510Ys3/h5IkRc=
 github.com/maruel/panicparse v1.1.1/go.mod h1:nty42YY5QByNC5MM7q/nj938VbgPU7avs45z6NClpxI=
 github.com/mattn/go-runewidth v0.0.3 h1:a+kO+98RDGEfo6asOGMmpodZq4FNtnGP54yps8BzLR4=
 github.com/mattn/go-runewidth v0.0.3/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
 github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7 h1:DpOJ2HYzCv8LZP15IdmG+YdwD2luVPHITV96TkirNBM=
 github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7/go.mod h1:ZXFpozHsX6DPmq2I0TCekCxypsnAUbP2oI0UX1GXzOo=
-github.com/nlopes/slack v0.5.1-0.20190515005541-e2954b1409b0 h1:M89l6W6BKfWSn13BtDUcDeePI5bQE0frdE1a/n2bMc8=
-github.com/nlopes/slack v0.5.1-0.20190515005541-e2954b1409b0/go.mod h1:JzQ9m3PMAqcpeCam7UaHSuBuupz7CmpjehYMayT6YOk=
+github.com/nlopes/slack v0.6.0 h1:jt0jxVQGhssx1Ib7naAOZEZcGdtIhTzkP0nopK0AsRA=
+github.com/nlopes/slack v0.6.0/go.mod h1:JzQ9m3PMAqcpeCam7UaHSuBuupz7CmpjehYMayT6YOk=
 github.com/nsf/termbox-go v0.0.0-20180819125858-b66b20ab708e h1:fvw0uluMptljaRKSU8459cJ4bmi3qUYyMs5kzpic2fY=
 github.com/nsf/termbox-go v0.0.0-20180819125858-b66b20ab708e/go.mod h1:IuKpRQcYE1Tfu+oAQqaLisqDeXgjyyltCfsaoYN18NQ=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/renstrom/fuzzysearch v1.0.1 h1:hnh2Fhqqa5I41Xgmm7UMAYgEIRn/iZwWItfwUHr1IWE=
 github.com/renstrom/fuzzysearch v1.0.1/go.mod h1:SAEjPB4voP88qmWJXI7mA5m15uNlEnuHLx4Eu2mPGpQ=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
+github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
--- a/vendor/github.com/gorilla/websocket/.travis.yml
+++ b/vendor/github.com/gorilla/websocket/.travis.yml
@ -1,19 +0,0 @@
-language: go
-sudo: false
-
-matrix:
-  include:
-    - go: 1.7.x
-    - go: 1.8.x
-    - go: 1.9.x
-    - go: 1.10.x
-    - go: 1.11.x
-    - go: tip
-  allow_failures:
-    - go: tip
-
-script:
-  - go get -t -v ./...
-  - diff -u <(echo -n) <(gofmt -d .)
-  - go vet $(go list ./... | grep -v /vendor/)
-  - go test -v -race ./...
--- a/vendor/github.com/gorilla/websocket/README.md
+++ b/vendor/github.com/gorilla/websocket/README.md
@ -1,11 +1,11 @@
 # Gorilla WebSocket

+[![GoDoc](https://godoc.org/github.com/gorilla/websocket?status.svg)](https://godoc.org/github.com/gorilla/websocket)
+[![CircleCI](https://circleci.com/gh/gorilla/websocket.svg?style=svg)](https://circleci.com/gh/gorilla/websocket)
+
 Gorilla WebSocket is a [Go](http://golang.org/) implementation of the
 [WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol.

-[![Build Status](https://travis-ci.org/gorilla/websocket.svg?branch=master)](https://travis-ci.org/gorilla/websocket)
-[![GoDoc](https://godoc.org/github.com/gorilla/websocket?status.svg)](https://godoc.org/github.com/gorilla/websocket)
-
 ### Documentation

 * [API Reference](http://godoc.org/github.com/gorilla/websocket)
@ -27,7 +27,7 @@ package API is stable.
 ### Protocol Compliance

 The Gorilla WebSocket package passes the server tests in the [Autobahn Test
-Suite](http://autobahn.ws/testsuite) using the application in the [examples/autobahn
+Suite](https://github.com/crossbario/autobahn-testsuite) using the application in the [examples/autobahn
 subdirectory](https://github.com/gorilla/websocket/tree/master/examples/autobahn).

 ### Gorilla WebSocket compared with other packages
@ -40,7 +40,7 @@ subdirectory](https://github.com/gorilla/websocket/tree/master/examples/autobahn
 </tr>
 <tr>
 <tr><td colspan="3"><a href="http://tools.ietf.org/html/rfc6455">RFC 6455</a> Features</td></tr>
-<tr><td>Passes <a href="http://autobahn.ws/testsuite/">Autobahn Test Suite</a></td><td><a href="https://github.com/gorilla/websocket/tree/master/examples/autobahn">Yes</a></td><td>No</td></tr>
+<tr><td>Passes <a href="https://github.com/crossbario/autobahn-testsuite">Autobahn Test Suite</a></td><td><a href="https://github.com/gorilla/websocket/tree/master/examples/autobahn">Yes</a></td><td>No</td></tr>
 <tr><td>Receive <a href="https://tools.ietf.org/html/rfc6455#section-5.4">fragmented</a> message<td>Yes</td><td><a href="https://code.google.com/p/go/issues/detail?id=7632">No</a>, see note 1</td></tr>
 <tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.1">close</a> message</td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td><a href="https://code.google.com/p/go/issues/detail?id=4588">No</a></td></tr>
 <tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.2">pings</a> and receive <a href="https://tools.ietf.org/html/rfc6455#section-5.5.3">pongs</a></td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td>No</td></tr>
--- a/vendor/github.com/gorilla/websocket/client.go
+++ b/vendor/github.com/gorilla/websocket/client.go
@ -70,7 +70,7 @@ type Dialer struct {
 	// HandshakeTimeout specifies the duration for the handshake to complete.
 	HandshakeTimeout time.Duration

-	// ReadBufferSize and WriteBufferSize specify I/O buffer sizes. If a buffer
+	// ReadBufferSize and WriteBufferSize specify I/O buffer sizes in bytes. If a buffer
 	// size is zero, then a useful default size is used. The I/O buffer sizes
 	// do not limit the size of the messages that can be sent or received.
 	ReadBufferSize, WriteBufferSize int
@ -140,7 +140,7 @@ var nilDialer = *DefaultDialer
 // Use the response.Header to get the selected subprotocol
 // (Sec-WebSocket-Protocol) and cookies (Set-Cookie).
 //
-// The context will be used in the request and in the Dialer
+// The context will be used in the request and in the Dialer.
 //
 // If the WebSocket handshake fails, ErrBadHandshake is returned along with a
 // non-nil *http.Response so that callers can handle redirects, authentication,
--- a/vendor/github.com/gorilla/websocket/conn.go
+++ b/vendor/github.com/gorilla/websocket/conn.go
@ -260,10 +260,12 @@ type Conn struct {
 	newCompressionWriter   func(io.WriteCloser, int) io.WriteCloser

 	// Read fields
-	reader        io.ReadCloser // the current reader returned to the application
-	readErr       error
-	br            *bufio.Reader
-	readRemaining int64 // bytes remaining in current frame.
+	reader  io.ReadCloser // the current reader returned to the application
+	readErr error
+	br      *bufio.Reader
+	// bytes remaining in current frame.
+	// set setReadRemaining to safely update this value and prevent overflow
+	readRemaining int64
 	readFinal     bool  // true the current message has more frames.
 	readLength    int64 // Message size.
 	readLimit     int64 // Maximum message size.
@ -320,6 +322,17 @@ func newConn(conn net.Conn, isServer bool, readBufferSize, writeBufferSize int,
 	return c
 }

+// setReadRemaining tracks the number of bytes remaining on the connection. If n
+// overflows, an ErrReadLimit is returned.
+func (c *Conn) setReadRemaining(n int64) error {
+	if n < 0 {
+		return ErrReadLimit
+	}
+
+	c.readRemaining = n
+	return nil
+}
+
 // Subprotocol returns the negotiated protocol for the connection.
 func (c *Conn) Subprotocol() string {
 	return c.subprotocol
@ -451,7 +464,8 @@ func (c *Conn) WriteControl(messageType int, data []byte, deadline time.Time) er
 	return err
 }

-func (c *Conn) prepWrite(messageType int) error {
+// beginMessage prepares a connection and message writer for a new message.
+func (c *Conn) beginMessage(mw *messageWriter, messageType int) error {
 	// Close previous writer if not already closed by the application. It's
 	// probably better to return an error in this situation, but we cannot
 	// change this without breaking existing applications.
@ -471,6 +485,10 @@ func (c *Conn) prepWrite(messageType int) error {
 		return err
 	}

+	mw.c = c
+	mw.frameType = messageType
+	mw.pos = maxFrameHeaderSize
+
 	if c.writeBuf == nil {
 		wpd, ok := c.writePool.Get().(writePoolData)
 		if ok {
@ -491,16 +509,11 @@ func (c *Conn) prepWrite(messageType int) error {
 // All message types (TextMessage, BinaryMessage, CloseMessage, PingMessage and
 // PongMessage) are supported.
 func (c *Conn) NextWriter(messageType int) (io.WriteCloser, error) {
-	if err := c.prepWrite(messageType); err != nil {
+	var mw messageWriter
+	if err := c.beginMessage(&mw, messageType); err != nil {
 		return nil, err
 	}
-
-	mw := &messageWriter{
-		c:         c,
-		frameType: messageType,
-		pos:       maxFrameHeaderSize,
-	}
-	c.writer = mw
+	c.writer = &mw
 	if c.newCompressionWriter != nil && c.enableWriteCompression && isData(messageType) {
 		w := c.newCompressionWriter(c.writer, c.compressionLevel)
 		mw.compress = true
@ -517,10 +530,16 @@ type messageWriter struct {
 	err       error
 }

-func (w *messageWriter) fatal(err error) error {
+func (w *messageWriter) endMessage(err error) error {
 	if w.err != nil {
-		w.err = err
-		w.c.writer = nil
+		return err
+	}
+	c := w.c
+	w.err = err
+	c.writer = nil
+	if c.writePool != nil {
+		c.writePool.Put(writePoolData{buf: c.writeBuf})
+		c.writeBuf = nil
 	}
 	return err
 }
@ -534,7 +553,7 @@ func (w *messageWriter) flushFrame(final bool, extra []byte) error {
 	// Check for invalid control frames.
 	if isControl(w.frameType) &&
 		(!final || length > maxControlFramePayloadSize) {
-		return w.fatal(errInvalidControlFrame)
+		return w.endMessage(errInvalidControlFrame)
 	}

 	b0 := byte(w.frameType)
@ -579,7 +598,7 @@ func (w *messageWriter) flushFrame(final bool, extra []byte) error {
 		copy(c.writeBuf[maxFrameHeaderSize-4:], key[:])
 		maskBytes(key, 0, c.writeBuf[maxFrameHeaderSize:w.pos])
 		if len(extra) > 0 {
-			return c.writeFatal(errors.New("websocket: internal error, extra used in client mode"))
+			return w.endMessage(c.writeFatal(errors.New("websocket: internal error, extra used in client mode")))
 		}
 	}

@ -600,15 +619,11 @@ func (w *messageWriter) flushFrame(final bool, extra []byte) error {
 	c.isWriting = false

 	if err != nil {
-		return w.fatal(err)
+		return w.endMessage(err)
 	}

 	if final {
-		c.writer = nil
-		if c.writePool != nil {
-			c.writePool.Put(writePoolData{buf: c.writeBuf})
-			c.writeBuf = nil
-		}
+		w.endMessage(errWriteClosed)
 		return nil
 	}

@ -706,11 +721,7 @@ func (w *messageWriter) Close() error {
 	if w.err != nil {
 		return w.err
 	}
-	if err := w.flushFrame(true, nil); err != nil {
-		return err
-	}
-	w.err = errWriteClosed
-	return nil
+	return w.flushFrame(true, nil)
 }

 // WritePreparedMessage writes prepared message into connection.
@ -742,10 +753,10 @@ func (c *Conn) WriteMessage(messageType int, data []byte) error {
 	if c.isServer && (c.newCompressionWriter == nil || !c.enableWriteCompression) {
 		// Fast path with no allocations and single frame.

-		if err := c.prepWrite(messageType); err != nil {
+		var mw messageWriter
+		if err := c.beginMessage(&mw, messageType); err != nil {
 			return err
 		}
-		mw := messageWriter{c: c, frameType: messageType, pos: maxFrameHeaderSize}
 		n := copy(c.writeBuf[mw.pos:], data)
 		mw.pos += n
 		data = data[n:]
@ -792,7 +803,7 @@ func (c *Conn) advanceFrame() (int, error) {
 	final := p[0]&finalBit != 0
 	frameType := int(p[0] & 0xf)
 	mask := p[1]&maskBit != 0
-	c.readRemaining = int64(p[1] & 0x7f)
+	c.setReadRemaining(int64(p[1] & 0x7f))

 	c.readDecompress = false
 	if c.newDecompressionReader != nil && (p[0]&rsv1Bit) != 0 {
@ -826,7 +837,17 @@ func (c *Conn) advanceFrame() (int, error) {
 		return noFrame, c.handleProtocolError("unknown opcode " + strconv.Itoa(frameType))
 	}

-	// 3. Read and parse frame length.
+	// 3. Read and parse frame length as per
+	// https://tools.ietf.org/html/rfc6455#section-5.2
+	//
+	// The length of the "Payload data", in bytes: if 0-125, that is the payload
+	// length.
+	// - If 126, the following 2 bytes interpreted as a 16-bit unsigned
+	// integer are the payload length.
+	// - If 127, the following 8 bytes interpreted as
+	// a 64-bit unsigned integer (the most significant bit MUST be 0) are the
+	// payload length. Multibyte length quantities are expressed in network byte
+	// order.

 	switch c.readRemaining {
 	case 126:
@ -834,13 +855,19 @@ func (c *Conn) advanceFrame() (int, error) {
 		if err != nil {
 			return noFrame, err
 		}
-		c.readRemaining = int64(binary.BigEndian.Uint16(p))
+
+		if err := c.setReadRemaining(int64(binary.BigEndian.Uint16(p))); err != nil {
+			return noFrame, err
+		}
 	case 127:
 		p, err := c.read(8)
 		if err != nil {
 			return noFrame, err
 		}
-		c.readRemaining = int64(binary.BigEndian.Uint64(p))
+
+		if err := c.setReadRemaining(int64(binary.BigEndian.Uint64(p))); err != nil {
+			return noFrame, err
+		}
 	}

 	// 4. Handle frame masking.
@ -863,6 +890,12 @@ func (c *Conn) advanceFrame() (int, error) {
 	if frameType == continuationFrame || frameType == TextMessage || frameType == BinaryMessage {

 		c.readLength += c.readRemaining
+		// Don't allow readLength to overflow in the presence of a large readRemaining
+		// counter.
+		if c.readLength < 0 {
+			return noFrame, ErrReadLimit
+		}
+
 		if c.readLimit > 0 && c.readLength > c.readLimit {
 			c.WriteControl(CloseMessage, FormatCloseMessage(CloseMessageTooBig, ""), time.Now().Add(writeWait))
 			return noFrame, ErrReadLimit
@ -876,7 +909,7 @@ func (c *Conn) advanceFrame() (int, error) {
 	var payload []byte
 	if c.readRemaining > 0 {
 		payload, err = c.read(int(c.readRemaining))
-		c.readRemaining = 0
+		c.setReadRemaining(0)
 		if err != nil {
 			return noFrame, err
 		}
@ -949,6 +982,7 @@ func (c *Conn) NextReader() (messageType int, r io.Reader, err error) {
 			c.readErr = hideTempErr(err)
 			break
 		}
+
 		if frameType == TextMessage || frameType == BinaryMessage {
 			c.messageReader = &messageReader{c}
 			c.reader = c.messageReader
@ -989,7 +1023,9 @@ func (r *messageReader) Read(b []byte) (int, error) {
 			if c.isServer {
 				c.readMaskPos = maskBytes(c.readMaskKey, c.readMaskPos, b[:n])
 			}
-			c.readRemaining -= int64(n)
+			rem := c.readRemaining
+			rem -= int64(n)
+			c.setReadRemaining(rem)
 			if c.readRemaining > 0 && c.readErr == io.EOF {
 				c.readErr = errUnexpectedEOF
 			}
@ -1041,7 +1077,7 @@ func (c *Conn) SetReadDeadline(t time.Time) error {
 	return c.conn.SetReadDeadline(t)
 }

-// SetReadLimit sets the maximum size for a message read from the peer. If a
+// SetReadLimit sets the maximum size in bytes for a message read from the peer. If a
 // message exceeds the limit, the connection sends a close message to the peer
 // and returns ErrReadLimit to the application.
 func (c *Conn) SetReadLimit(limit int64) {
--- a/vendor/github.com/gorilla/websocket/doc.go
+++ b/vendor/github.com/gorilla/websocket/doc.go
@ -151,6 +151,53 @@
 // checking. The application is responsible for checking the Origin header
 // before calling the Upgrade function.
 //
+// Buffers
+//
+// Connections buffer network input and output to reduce the number
+// of system calls when reading or writing messages.
+//
+// Write buffers are also used for constructing WebSocket frames. See RFC 6455,
+// Section 5 for a discussion of message framing. A WebSocket frame header is
+// written to the network each time a write buffer is flushed to the network.
+// Decreasing the size of the write buffer can increase the amount of framing
+// overhead on the connection.
+//
+// The buffer sizes in bytes are specified by the ReadBufferSize and
+// WriteBufferSize fields in the Dialer and Upgrader. The Dialer uses a default
+// size of 4096 when a buffer size field is set to zero. The Upgrader reuses
+// buffers created by the HTTP server when a buffer size field is set to zero.
+// The HTTP server buffers have a size of 4096 at the time of this writing.
+//
+// The buffer sizes do not limit the size of a message that can be read or
+// written by a connection.
+//
+// Buffers are held for the lifetime of the connection by default. If the
+// Dialer or Upgrader WriteBufferPool field is set, then a connection holds the
+// write buffer only when writing a message.
+//
+// Applications should tune the buffer sizes to balance memory use and
+// performance. Increasing the buffer size uses more memory, but can reduce the
+// number of system calls to read or write the network. In the case of writing,
+// increasing the buffer size can reduce the number of frame headers written to
+// the network.
+//
+// Some guidelines for setting buffer parameters are:
+//
+// Limit the buffer sizes to the maximum expected message size. Buffers larger
+// than the largest message do not provide any benefit.
+//
+// Depending on the distribution of message sizes, setting the buffer size to
+// to a value less than the maximum expected message size can greatly reduce
+// memory use with a small impact on performance. Here's an example: If 99% of
+// the messages are smaller than 256 bytes and the maximum message size is 512
+// bytes, then a buffer size of 256 bytes will result in 1.01 more system calls
+// than a buffer size of 512 bytes. The memory savings is 50%.
+//
+// A write buffer pool is useful when the application has a modest number
+// writes over a large number of connections. when buffers are pooled, a larger
+// buffer size has a reduced impact on total memory use and has the benefit of
+// reducing system calls and frame overhead.
+//
 // Compression EXPERIMENTAL
 //
 // Per message compression extensions (RFC 7692) are experimentally supported
--- a/vendor/github.com/gorilla/websocket/go.mod
+++ b/vendor/github.com/gorilla/websocket/go.mod
@ -0,0 +1,3 @@
+module github.com/gorilla/websocket
+
+go 1.12
--- a/vendor/github.com/gorilla/websocket/go.sum
+++ b/vendor/github.com/gorilla/websocket/go.sum
@ -0,0 +1,2 @@
+github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
+github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
--- a/vendor/github.com/gorilla/websocket/join.go
+++ b/vendor/github.com/gorilla/websocket/join.go
@ -0,0 +1,42 @@
+// Copyright 2019 The Gorilla WebSocket Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package websocket
+
+import (
+	"io"
+	"strings"
+)
+
+// JoinMessages concatenates received messages to create a single io.Reader.
+// The string term is appended to each message. The returned reader does not
+// support concurrent calls to the Read method.
+func JoinMessages(c *Conn, term string) io.Reader {
+	return &joinReader{c: c, term: term}
+}
+
+type joinReader struct {
+	c    *Conn
+	term string
+	r    io.Reader
+}
+
+func (r *joinReader) Read(p []byte) (int, error) {
+	if r.r == nil {
+		var err error
+		_, r.r, err = r.c.NextReader()
+		if err != nil {
+			return 0, err
+		}
+		if r.term != "" {
+			r.r = io.MultiReader(r.r, strings.NewReader(r.term))
+		}
+	}
+	n, err := r.r.Read(p)
+	if err == io.EOF {
+		err = nil
+		r.r = nil
+	}
+	return n, err
+}
--- a/vendor/github.com/gorilla/websocket/proxy.go
+++ b/vendor/github.com/gorilla/websocket/proxy.go
@ -22,18 +22,18 @@ func (fn netDialerFunc) Dial(network, addr string) (net.Conn, error) {

 func init() {
 	proxy_RegisterDialerType("http", func(proxyURL *url.URL, forwardDialer proxy_Dialer) (proxy_Dialer, error) {
-		return &httpProxyDialer{proxyURL: proxyURL, fowardDial: forwardDialer.Dial}, nil
+		return &httpProxyDialer{proxyURL: proxyURL, forwardDial: forwardDialer.Dial}, nil
 	})
 }

 type httpProxyDialer struct {
-	proxyURL   *url.URL
-	fowardDial func(network, addr string) (net.Conn, error)
+	proxyURL    *url.URL
+	forwardDial func(network, addr string) (net.Conn, error)
 }

 func (hpd *httpProxyDialer) Dial(network string, addr string) (net.Conn, error) {
 	hostPort, _ := hostPortNoPort(hpd.proxyURL)
-	conn, err := hpd.fowardDial(network, hostPort)
+	conn, err := hpd.forwardDial(network, hostPort)
 	if err != nil {
 		return nil, err
 	}
--- a/vendor/github.com/gorilla/websocket/server.go
+++ b/vendor/github.com/gorilla/websocket/server.go
@ -27,7 +27,7 @@ type Upgrader struct {
 	// HandshakeTimeout specifies the duration for the handshake to complete.
 	HandshakeTimeout time.Duration

-	// ReadBufferSize and WriteBufferSize specify I/O buffer sizes. If a buffer
+	// ReadBufferSize and WriteBufferSize specify I/O buffer sizes in bytes. If a buffer
 	// size is zero, then buffers allocated by the HTTP server are used. The
 	// I/O buffer sizes do not limit the size of the messages that can be sent
 	// or received.
@ -153,7 +153,7 @@ func (u *Upgrader) Upgrade(w http.ResponseWriter, r *http.Request, responseHeade

 	challengeKey := r.Header.Get("Sec-Websocket-Key")
 	if challengeKey == "" {
-		return u.returnError(w, r, http.StatusBadRequest, "websocket: not a websocket handshake: `Sec-WebSocket-Key' header is missing or blank")
+		return u.returnError(w, r, http.StatusBadRequest, "websocket: not a websocket handshake: 'Sec-WebSocket-Key' header is missing or blank")
 	}

 	subprotocol := u.selectSubprotocol(r, responseHeader)
--- a/vendor/github.com/gorilla/websocket/util.go
+++ b/vendor/github.com/gorilla/websocket/util.go
@ -31,68 +31,113 @@ func generateChallengeKey() (string, error) {
 	return base64.StdEncoding.EncodeToString(p), nil
 }

-// Octet types from RFC 2616.
-var octetTypes [256]byte
-
-const (
-	isTokenOctet = 1 << iota
-	isSpaceOctet
-)
-
-func init() {
-	// From RFC 2616
-	//
-	// OCTET      = <any 8-bit sequence of data>
-	// CHAR       = <any US-ASCII character (octets 0 - 127)>
-	// CTL        = <any US-ASCII control character (octets 0 - 31) and DEL (127)>
-	// CR         = <US-ASCII CR, carriage return (13)>
-	// LF         = <US-ASCII LF, linefeed (10)>
-	// SP         = <US-ASCII SP, space (32)>
-	// HT         = <US-ASCII HT, horizontal-tab (9)>
-	// <">        = <US-ASCII double-quote mark (34)>
-	// CRLF       = CR LF
-	// LWS        = [CRLF] 1*( SP | HT )
-	// TEXT       = <any OCTET except CTLs, but including LWS>
-	// separators = "(" | ")" | "<" | ">" | "@" | "," | ";" | ":" | "\" | <">
-	//              | "/" | "[" | "]" | "?" | "=" | "{" | "}" | SP | HT
-	// token      = 1*<any CHAR except CTLs or separators>
-	// qdtext     = <any TEXT except <">>
-
-	for c := 0; c < 256; c++ {
-		var t byte
-		isCtl := c <= 31 || c == 127
-		isChar := 0 <= c && c <= 127
-		isSeparator := strings.IndexRune(" \t\"(),/:;<=>?@[]\\{}", rune(c)) >= 0
-		if strings.IndexRune(" \t\r\n", rune(c)) >= 0 {
-			t |= isSpaceOctet
-		}
-		if isChar && !isCtl && !isSeparator {
-			t |= isTokenOctet
-		}
-		octetTypes[c] = t
-	}
+// Token octets per RFC 2616.
+var isTokenOctet = [256]bool{
+	'!':  true,
+	'#':  true,
+	'$':  true,
+	'%':  true,
+	'&':  true,
+	'\'': true,
+	'*':  true,
+	'+':  true,
+	'-':  true,
+	'.':  true,
+	'0':  true,
+	'1':  true,
+	'2':  true,
+	'3':  true,
+	'4':  true,
+	'5':  true,
+	'6':  true,
+	'7':  true,
+	'8':  true,
+	'9':  true,
+	'A':  true,
+	'B':  true,
+	'C':  true,
+	'D':  true,
+	'E':  true,
+	'F':  true,
+	'G':  true,
+	'H':  true,
+	'I':  true,
+	'J':  true,
+	'K':  true,
+	'L':  true,
+	'M':  true,
+	'N':  true,
+	'O':  true,
+	'P':  true,
+	'Q':  true,
+	'R':  true,
+	'S':  true,
+	'T':  true,
+	'U':  true,
+	'W':  true,
+	'V':  true,
+	'X':  true,
+	'Y':  true,
+	'Z':  true,
+	'^':  true,
+	'_':  true,
+	'`':  true,
+	'a':  true,
+	'b':  true,
+	'c':  true,
+	'd':  true,
+	'e':  true,
+	'f':  true,
+	'g':  true,
+	'h':  true,
+	'i':  true,
+	'j':  true,
+	'k':  true,
+	'l':  true,
+	'm':  true,
+	'n':  true,
+	'o':  true,
+	'p':  true,
+	'q':  true,
+	'r':  true,
+	's':  true,
+	't':  true,
+	'u':  true,
+	'v':  true,
+	'w':  true,
+	'x':  true,
+	'y':  true,
+	'z':  true,
+	'|':  true,
+	'~':  true,
 }

+// skipSpace returns a slice of the string s with all leading RFC 2616 linear
+// whitespace removed.
 func skipSpace(s string) (rest string) {
 	i := 0
 	for ; i < len(s); i++ {
-		if octetTypes[s[i]]&isSpaceOctet == 0 {
+		if b := s[i]; b != ' ' && b != '\t' {
 			break
 		}
 	}
 	return s[i:]
 }

+// nextToken returns the leading RFC 2616 token of s and the string following
+// the token.
 func nextToken(s string) (token, rest string) {
 	i := 0
 	for ; i < len(s); i++ {
-		if octetTypes[s[i]]&isTokenOctet == 0 {
+		if !isTokenOctet[s[i]] {
 			break
 		}
 	}
 	return s[:i], s[i:]
 }

+// nextTokenOrQuoted returns the leading token or quoted string per RFC 2616
+// and the string following the token or quoted string.
 func nextTokenOrQuoted(s string) (value string, rest string) {
 	if !strings.HasPrefix(s, "\"") {
 		return nextToken(s)
@ -128,7 +173,8 @@ func nextTokenOrQuoted(s string) (value string, rest string) {
 	return "", ""
 }

-// equalASCIIFold returns true if s is equal to t with ASCII case folding.
+// equalASCIIFold returns true if s is equal to t with ASCII case folding as
+// defined in RFC 4790.
 func equalASCIIFold(s, t string) bool {
 	for s != "" && t != "" {
 		sr, size := utf8.DecodeRuneInString(s)
--- a/vendor/github.com/nlopes/slack/CHANGELOG.md
+++ b/vendor/github.com/nlopes/slack/CHANGELOG.md
@ -1,3 +1,20 @@
+### v0.6.0 - August 31, 2019
+full differences can be viewed using `git log --oneline --decorate --color v0.5.0..v0.6.0`
+thanks to everyone who has contributed since January!
+
+
+#### Breaking Changes:
+- Info struct has had fields removed related to deprecated functionality by slack.
+- minor adjustments to some structs.
+- some internal default values have changed, usually to be more inline with slack defaults or to correct inability to set a particular value. (Message Parse for example.)
+
+##### Highlights:
+- new slacktest package easy mocking for slack client. use, enjoy, please submit PRs for improvements and default behaviours! shamelessly taken from the [slack-test repo](https://github.com/lusis/slack-test) thank you lusis for letting us use it and bring it into the slack repo.
+- blocks, blocks, blocks.
+- RTM ManagedConnection has undergone a significant cleanup.
+in particular handles backoffs gracefully, removed many deadlocks,
+and Disconnect is now much more responsive.
+
 ### v0.5.0 - January 20, 2019
 full differences can be viewed using `git log --oneline --decorate --color v0.4.0..v0.5.0`
 - Breaking changes: various old struct fields have been removed or updated to match slack's api.
--- a/vendor/github.com/nlopes/slack/block.go
+++ b/vendor/github.com/nlopes/slack/block.go
@ -30,12 +30,22 @@ type Blocks struct {

 // BlockAction is the action callback sent when a block is interacted with
 type BlockAction struct {
-	ActionID string          `json:"action_id"`
-	BlockID  string          `json:"block_id"`
-	Text     TextBlockObject `json:"text"`
-	Value    string          `json:"value"`
-	Type     actionType      `json:"type"`
-	ActionTs string          `json:"action_ts"`
+	ActionID             string            `json:"action_id"`
+	BlockID              string            `json:"block_id"`
+	Type                 actionType        `json:"type"`
+	Text                 TextBlockObject   `json:"text"`
+	Value                string            `json:"value"`
+	ActionTs             string            `json:"action_ts"`
+	SelectedOption       OptionBlockObject `json:"selected_option"`
+	SelectedUser         string            `json:"selected_user"`
+	SelectedChannel      string            `json:"selected_channel"`
+	SelectedConversation string            `json:"selected_conversation"`
+	SelectedDate         string            `json:"selected_date"`
+	InitialOption        OptionBlockObject `json:"initial_option"`
+	InitialUser          string            `json:"initial_user"`
+	InitialChannel       string            `json:"initial_channel"`
+	InitialConversation  string            `json:"initial_conversation"`
+	InitialDate          string            `json:"initial_date"`
 }

 // actionType returns the type of the action
--- a/vendor/github.com/nlopes/slack/block_conv.go
+++ b/vendor/github.com/nlopes/slack/block_conv.go
@ -124,7 +124,7 @@ func (b *BlockElements) UnmarshalJSON(data []byte) error {
 			blockElement = &OverflowBlockElement{}
 		case "datepicker":
 			blockElement = &DatePickerBlockElement{}
-		case "static_select":
+		case "static_select", "external_select", "users_select", "conversations_select", "channels_select":
 			blockElement = &SelectBlockElement{}
 		default:
 			return errors.New("unsupported block element type")
--- a/vendor/github.com/nlopes/slack/block_element.go
+++ b/vendor/github.com/nlopes/slack/block_element.go
@ -139,13 +139,17 @@ func NewButtonBlockElement(actionID, value string, text *TextBlockObject) *Butto
 //
 // More Information: https://api.slack.com/reference/messaging/block-elements#select
 type SelectBlockElement struct {
-	Type          string                    `json:"type,omitempty"`
-	Placeholder   *TextBlockObject          `json:"placeholder,omitempty"`
-	ActionID      string                    `json:"action_id,omitempty"`
-	Options       []*OptionBlockObject      `json:"options,omitempty"`
-	OptionGroups  []*OptionGroupBlockObject `json:"option_groups,omitempty"`
-	InitialOption *OptionBlockObject        `json:"initial_option,omitempty"`
-	Confirm       *ConfirmationBlockObject  `json:"confirm,omitempty"`
+	Type                string                    `json:"type,omitempty"`
+	Placeholder         *TextBlockObject          `json:"placeholder,omitempty"`
+	ActionID            string                    `json:"action_id,omitempty"`
+	Options             []*OptionBlockObject      `json:"options,omitempty"`
+	OptionGroups        []*OptionGroupBlockObject `json:"option_groups,omitempty"`
+	InitialOption       *OptionBlockObject        `json:"initial_option,omitempty"`
+	InitialUser         string                    `json:"initial_user,omitempty"`
+	InitialConversation string                    `json:"initial_conversation,omitempty"`
+	InitialChannel      string                    `json:"initial_channel,omitempty"`
+	MinQueryLength      int                       `json:"min_query_length,omitempty"`
+	Confirm             *ConfirmationBlockObject  `json:"confirm,omitempty"`
 }

 // ElementType returns the type of the Element
--- a/vendor/github.com/nlopes/slack/block_object.go
+++ b/vendor/github.com/nlopes/slack/block_object.go
@ -178,6 +178,7 @@ func NewConfirmationBlockObject(title, text, confirm, deny *TextBlockObject) *Co
 type OptionBlockObject struct {
 	Text  *TextBlockObject `json:"text"`
 	Value string           `json:"value"`
+	URL   string           `json:"url"`
 }

 // NewOptionBlockObject returns an instance of a new Option Block Element
@ -197,7 +198,7 @@ func (s OptionBlockObject) validateType() MessageObjectType {
 //
 // More Information: https://api.slack.com/reference/messaging/composition-objects#option-group
 type OptionGroupBlockObject struct {
-	Label   *TextBlockObject     `json:"label"`
+	Label   *TextBlockObject     `json:"label,omitempty"`
 	Options []*OptionBlockObject `json:"options"`
 }

--- a/vendor/github.com/nlopes/slack/block_section.go
+++ b/vendor/github.com/nlopes/slack/block_section.go
@ -16,12 +16,27 @@ func (s SectionBlock) BlockType() MessageBlockType {
 	return s.Type
 }

+// SectionBlockOption allows configuration of options for a new section block
+type SectionBlockOption func(*SectionBlock)
+
+func SectionBlockOptionBlockID(blockID string) SectionBlockOption {
+	return func(block *SectionBlock) {
+		block.BlockID = blockID
+	}
+}
+
 // NewSectionBlock returns a new instance of a section block to be rendered
-func NewSectionBlock(textObj *TextBlockObject, fields []*TextBlockObject, accessory *Accessory) *SectionBlock {
-	return &SectionBlock{
+func NewSectionBlock(textObj *TextBlockObject, fields []*TextBlockObject, accessory *Accessory, options ...SectionBlockOption) *SectionBlock {
+	block := SectionBlock{
 		Type:      MBTSection,
 		Text:      textObj,
 		Fields:    fields,
 		Accessory: accessory,
 	}
+
+	for _, option := range options {
+		option(&block)
+	}
+
+	return &block
 }
--- a/vendor/github.com/nlopes/slack/bots.go
+++ b/vendor/github.com/nlopes/slack/bots.go
@ -41,7 +41,10 @@ func (api *Client) GetBotInfo(bot string) (*Bot, error) {
 func (api *Client) GetBotInfoContext(ctx context.Context, bot string) (*Bot, error) {
 	values := url.Values{
 		"token": {api.token},
-		"bot":   {bot},
+	}
+
+	if bot != "" {
+		values.Add("bot", bot)
 	}

 	response, err := api.botRequest(ctx, "bots.info", values)
--- a/vendor/github.com/nlopes/slack/channels.go
+++ b/vendor/github.com/nlopes/slack/channels.go
@ -32,11 +32,7 @@ func (api *Client) channelRequest(ctx context.Context, path string, values url.V
 		return nil, err
 	}

-	if err := response.Err(); err != nil {
-		return nil, err
-	}
-
-	return response, nil
+	return response, response.Err()
 }

 type channelsConfig struct {
@ -284,6 +280,7 @@ func (api *Client) GetChannelsContext(ctx context.Context, excludeArchived bool,
 			"token": {api.token},
 		},
 	}
+
 	if excludeArchived {
 		options = append(options, GetChannelsOptionExcludeArchived())
 	}
--- a/vendor/github.com/nlopes/slack/chat.go
+++ b/vendor/github.com/nlopes/slack/chat.go
@ -3,6 +3,7 @@ package slack
 import (
 	"context"
 	"encoding/json"
+	"net/http"
 	"net/url"

 	"github.com/nlopes/slack/slackutilsx"
@ -25,7 +26,7 @@ const (

 type chatResponseFull struct {
 	Channel          string `json:"channel"`
-	Timestamp        string `json:"ts"`         //Regualr message timestamp
+	Timestamp        string `json:"ts"`         //Regular message timestamp
 	MessageTimeStamp string `json:"message_ts"` //Ephemeral message timestamp
 	Text             string `json:"text"`
 	SlackResponse
@ -156,17 +157,18 @@ func (api *Client) SendMessage(channel string, options ...MsgOption) (string, st
 }

 // SendMessageContext more flexible method for configuring messages with a custom context.
-func (api *Client) SendMessageContext(ctx context.Context, channelID string, options ...MsgOption) (channel string, timestamp string, text string, err error) {
+func (api *Client) SendMessageContext(ctx context.Context, channelID string, options ...MsgOption) (_channel string, _timestamp string, _text string, err error) {
 	var (
-		config   sendConfig
+		req      *http.Request
+		parser   func(*chatResponseFull) responseParser
 		response chatResponseFull
 	)

-	if config, err = applyMsgOptions(api.token, channelID, api.endpoint, options...); err != nil {
+	if req, parser, err = buildSender(api.endpoint, options...).BuildRequest(api.token, channelID); err != nil {
 		return "", "", "", err
 	}

-	if err = postForm(ctx, api.httpclient, config.endpoint, config.values, &response, api); err != nil {
+	if err = doPost(ctx, api.httpclient, req, parser(&response), api); err != nil {
 		return "", "", "", err
 	}

@ -200,6 +202,13 @@ func applyMsgOptions(token, channel, apiurl string, options ...MsgOption) (sendC
 	return config, nil
 }

+func buildSender(apiurl string, options ...MsgOption) sendConfig {
+	return sendConfig{
+		apiurl:  apiurl,
+		options: options,
+	}
+}
+
 type sendMode string

 const (
@ -207,16 +216,70 @@ const (
 	chatPostMessage   sendMode = "chat.postMessage"
 	chatDelete        sendMode = "chat.delete"
 	chatPostEphemeral sendMode = "chat.postEphemeral"
+	chatResponse      sendMode = "chat.responseURL"
 	chatMeMessage     sendMode = "chat.meMessage"
 	chatUnfurl        sendMode = "chat.unfurl"
 )

 type sendConfig struct {
-	apiurl   string
+	apiurl       string
+	options      []MsgOption
+	mode         sendMode
+	endpoint     string
+	values       url.Values
+	attachments  []Attachment
+	responseType string
+}
+
+func (t sendConfig) BuildRequest(token, channelID string) (req *http.Request, _ func(*chatResponseFull) responseParser, err error) {
+	if t, err = applyMsgOptions(token, channelID, t.apiurl, t.options...); err != nil {
+		return nil, nil, err
+	}
+
+	switch t.mode {
+	case chatResponse:
+		return responseURLSender{
+			endpoint:     t.endpoint,
+			values:       t.values,
+			attachments:  t.attachments,
+			responseType: t.responseType,
+		}.BuildRequest()
+	default:
+		return formSender{endpoint: t.endpoint, values: t.values}.BuildRequest()
+	}
+}
+
+type formSender struct {
 	endpoint string
 	values   url.Values
 }

+func (t formSender) BuildRequest() (*http.Request, func(*chatResponseFull) responseParser, error) {
+	req, err := formReq(t.endpoint, t.values)
+	return req, func(resp *chatResponseFull) responseParser {
+		return newJSONParser(resp)
+	}, err
+}
+
+type responseURLSender struct {
+	endpoint     string
+	values       url.Values
+	attachments  []Attachment
+	responseType string
+}
+
+func (t responseURLSender) BuildRequest() (*http.Request, func(*chatResponseFull) responseParser, error) {
+	req, err := jsonReq(t.endpoint, Msg{
+		Text:         t.values.Get("text"),
+		Timestamp:    t.values.Get("ts"),
+		Attachments:  t.attachments,
+		ResponseType: t.responseType,
+	})
+	return req, func(resp *chatResponseFull) responseParser {
+		return newContentTypeParser(resp)
+	}, err
+}
+
 // MsgOption option provided when sending a message.
 type MsgOption func(*sendConfig) error

@ -279,6 +342,17 @@ func MsgOptionUnfurl(timestamp string, unfurls map[string]Attachment) MsgOption
 	}
 }

+// MsgOptionResponseURL supplies a url to use as the endpoint.
+func MsgOptionResponseURL(url string, rt string) MsgOption {
+	return func(config *sendConfig) error {
+		config.mode = chatResponse
+		config.endpoint = url
+		config.responseType = rt
+		config.values.Del("ts")
+		return nil
+	}
+}
+
 // MsgOptionAsUser whether or not to send the message as the user.
 func MsgOptionAsUser(b bool) MsgOption {
 	return func(config *sendConfig) error {
@ -324,10 +398,17 @@ func MsgOptionAttachments(attachments ...Attachment) MsgOption {
 			return nil
 		}

-		attachments, err := json.Marshal(attachments)
+		config.attachments = attachments
+
+		// FIXME: We are setting the attachments on the message twice: above for
+		// the json version, and below for the html version.  The marshalled bytes
+		// we put into config.values below don't work directly in the Msg version.
+
+		attachmentBytes, err := json.Marshal(attachments)
 		if err == nil {
-			config.values.Set("attachments", string(attachments))
+			config.values.Set("attachments", string(attachmentBytes))
 		}
+
 		return err
 	}
 }
--- a/vendor/github.com/nlopes/slack/conversation.go
+++ b/vendor/github.com/nlopes/slack/conversation.go
@ -99,6 +99,7 @@ func (api *Client) GetUsersInConversationContext(ctx context.Context, params *Ge
 		ResponseMetaData responseMetaData `json:"response_metadata"`
 		SlackResponse
 	}{}
+
 	err := api.postMethod(ctx, "conversations.members", values, &response)
 	if err != nil {
 		return nil, "", err
@ -160,6 +161,7 @@ func (api *Client) ArchiveConversationContext(ctx context.Context, channelID str
 		"token":   {api.token},
 		"channel": {channelID},
 	}
+
 	response := SlackResponse{}
 	err := api.postMethod(ctx, "conversations.archive", values, &response)
 	if err != nil {
@ -229,6 +231,7 @@ func (api *Client) SetPurposeOfConversationContext(ctx context.Context, channelI
 		SlackResponse
 		Channel *Channel `json:"channel"`
 	}{}
+
 	err := api.postMethod(ctx, "conversations.setPurpose", values, &response)
 	if err != nil {
 		return nil, err
@ -253,6 +256,7 @@ func (api *Client) RenameConversationContext(ctx context.Context, channelID, cha
 		SlackResponse
 		Channel *Channel `json:"channel"`
 	}{}
+
 	err := api.postMethod(ctx, "conversations.rename", values, &response)
 	if err != nil {
 		return nil, err
@ -277,6 +281,7 @@ func (api *Client) InviteUsersToConversationContext(ctx context.Context, channel
 		SlackResponse
 		Channel *Channel `json:"channel"`
 	}{}
+
 	err := api.postMethod(ctx, "conversations.invite", values, &response)
 	if err != nil {
 		return nil, err
@ -297,6 +302,7 @@ func (api *Client) KickUserFromConversationContext(ctx context.Context, channelI
 		"channel": {channelID},
 		"user":    {user},
 	}
+
 	response := SlackResponse{}
 	err := api.postMethod(ctx, "conversations.kick", values, &response)
 	if err != nil {
@ -479,6 +485,7 @@ func (api *Client) GetConversationsContext(ctx context.Context, params *GetConve
 		ResponseMetaData responseMetaData `json:"response_metadata"`
 		SlackResponse
 	}{}
+
 	err = api.postMethod(ctx, "conversations.list", values, &response)
 	if err != nil {
 		return nil, "", err
@ -516,6 +523,7 @@ func (api *Client) OpenConversationContext(ctx context.Context, params *OpenConv
 		AlreadyOpen bool     `json:"already_open"`
 		SlackResponse
 	}{}
+
 	err := api.postMethod(ctx, "conversations.open", values, &response)
 	if err != nil {
 		return nil, false, false, err
@ -540,6 +548,7 @@ func (api *Client) JoinConversationContext(ctx context.Context, channelID string
 		} `json:"response_metadata"`
 		SlackResponse
 	}{}
+
 	err := api.postMethod(ctx, "conversations.join", values, &response)
 	if err != nil {
 		return nil, "", nil, err
--- a/vendor/github.com/nlopes/slack/dialog_select.go
+++ b/vendor/github.com/nlopes/slack/dialog_select.go
@ -21,7 +21,7 @@ type DialogInputSelect struct {
 	DialogInput
 	Value           string               `json:"value,omitempty"`            //Optional.
 	DataSource      SelectDataSource     `json:"data_source,omitempty"`      //Optional. Allowed values: "users", "channels", "conversations", "external".
-	SelectedOptions string               `json:"selected_options,omitempty"` //Optional. Default value for "external" only
+	SelectedOptions []DialogSelectOption `json:"selected_options,omitempty"` //Optional. May hold at most one element, for use with "external" only.
 	Options         []DialogSelectOption `json:"options,omitempty"`          //One of options or option_groups is required.
 	OptionGroups    []DialogOptionGroup  `json:"option_groups,omitempty"`    //Provide up to 100 options.
 	MinQueryLength  int                  `json:"min_query_length,omitempty"` //Optional. minimum characters before query is sent.
--- a/vendor/github.com/nlopes/slack/dialog_text.go
+++ b/vendor/github.com/nlopes/slack/dialog_text.go
@ -3,6 +3,9 @@ package slack
 // TextInputSubtype Accepts email, number, tel, or url. In some form factors, optimized input is provided for this subtype.
 type TextInputSubtype string

+// TextInputOption handle to extra inputs options.
+type TextInputOption func(*TextInputElement)
+
 const (
 	// InputSubtypeEmail email keyboard
 	InputSubtypeEmail TextInputSubtype = "email"
@ -26,8 +29,8 @@ type TextInputElement struct {
 }

 // NewTextInput constructor for a `text` input
-func NewTextInput(name, label, text string) *TextInputElement {
-	return &TextInputElement{
+func NewTextInput(name, label, text string, options ...TextInputOption) *TextInputElement {
+	t := &TextInputElement{
 		DialogInput: DialogInput{
 			Type:  InputTypeText,
 			Name:  name,
@ -35,6 +38,12 @@ func NewTextInput(name, label, text string) *TextInputElement {
 		},
 		Value: text,
 	}
+
+	for _, opt := range options {
+		opt(t)
+	}
+
+	return t
 }

 // NewTextAreaInput constructor for a `textarea` input
--- a/vendor/github.com/nlopes/slack/files.go
+++ b/vendor/github.com/nlopes/slack/files.go
@ -90,7 +90,8 @@ type File struct {
 }

 type Share struct {
-	Public map[string][]ShareFileInfo `json:"public"`
+	Public  map[string][]ShareFileInfo `json:"public"`
+	Private map[string][]ShareFileInfo `json:"private"`
 }

 type ShareFileInfo struct {
@ -133,11 +134,21 @@ type GetFilesParameters struct {
 	Page          int
 }

+// ListFilesParameters contains all the parameters necessary (including the optional ones) for a ListFiles() request
+type ListFilesParameters struct {
+	Limit   int
+	User    string
+	Channel string
+	Types   string
+	Cursor  string
+}
+
 type fileResponseFull struct {
 	File     `json:"file"`
 	Paging   `json:"paging"`
-	Comments []Comment `json:"comments"`
-	Files    []File    `json:"files"`
+	Comments []Comment        `json:"comments"`
+	Files    []File           `json:"files"`
+	Metadata ResponseMetadata `json:"response_metadata"`

 	SlackResponse
 }
@ -196,6 +207,40 @@ func (api *Client) GetFiles(params GetFilesParameters) ([]File, *Paging, error)
 	return api.GetFilesContext(context.Background(), params)
 }

+// ListFiles retrieves all files according to the parameters given. Uses cursor based pagination.
+func (api *Client) ListFiles(params ListFilesParameters) ([]File, *ListFilesParameters, error) {
+	return api.ListFilesContext(context.Background(), params)
+}
+
+// ListFilesContext retrieves all files according to the parameters given with a custom context. Uses cursor based pagination.
+func (api *Client) ListFilesContext(ctx context.Context, params ListFilesParameters) ([]File, *ListFilesParameters, error) {
+	values := url.Values{
+		"token": {api.token},
+	}
+
+	if params.User != DEFAULT_FILES_USER {
+		values.Add("user", params.User)
+	}
+	if params.Channel != DEFAULT_FILES_CHANNEL {
+		values.Add("channel", params.Channel)
+	}
+	if params.Limit != DEFAULT_FILES_COUNT {
+		values.Add("limit", strconv.Itoa(params.Limit))
+	}
+	if params.Cursor != "" {
+		values.Add("cursor", params.Cursor)
+	}
+
+	response, err := api.fileRequest(ctx, "files.list", values)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	params.Cursor = response.Metadata.Cursor
+
+	return response.Files, &params, nil
+}
+
 // GetFilesContext retrieves all files according to the parameters given with a custom context
 func (api *Client) GetFilesContext(ctx context.Context, params GetFilesParameters) ([]File, *Paging, error) {
 	values := url.Values{
@ -243,9 +288,6 @@ func (api *Client) UploadFileContext(ctx context.Context, params FileUploadParam
 	if err != nil {
 		return nil, err
 	}
-	if params.Filename == "" {
-		return nil, fmt.Errorf("files.upload: FileUploadParameters.Filename is mandatory")
-	}
 	response := &fileResponseFull{}
 	values := url.Values{
 		"token": {api.token},
@ -274,8 +316,12 @@ func (api *Client) UploadFileContext(ctx context.Context, params FileUploadParam
 	} else if params.File != "" {
 		err = postLocalWithMultipartResponse(ctx, api.httpclient, api.endpoint+"files.upload", params.File, "file", values, response, api)
 	} else if params.Reader != nil {
+		if params.Filename == "" {
+			return nil, fmt.Errorf("files.upload: FileUploadParameters.Filename is mandatory when using FileUploadParameters.Reader")
+		}
 		err = postWithMultipartResponse(ctx, api.httpclient, api.endpoint+"files.upload", params.Filename, "file", values, params.Reader, response, api)
 	}
+
 	if err != nil {
 		return nil, err
 	}
--- a/vendor/github.com/nlopes/slack/info.go
+++ b/vendor/github.com/nlopes/slack/info.go
@ -156,17 +156,12 @@ type Icons struct {
 	Image72 string `json:"image_72,omitempty"`
 }

-// Info contains various details about Users, Channels, Bots and the authenticated user.
+// Info contains various details about the authenticated user and team.
 // It is returned by StartRTM or included in the "ConnectedEvent" RTM event.
 type Info struct {
-	URL      string       `json:"url,omitempty"`
-	User     *UserDetails `json:"self,omitempty"`
-	Team     *Team        `json:"team,omitempty"`
-	Users    []User       `json:"users,omitempty"`
-	Channels []Channel    `json:"channels,omitempty"`
-	Groups   []Group      `json:"groups,omitempty"`
-	Bots     []Bot        `json:"bots,omitempty"`
-	IMs      []IM         `json:"ims,omitempty"`
+	URL  string       `json:"url,omitempty"`
+	User *UserDetails `json:"self,omitempty"`
+	Team *Team        `json:"team,omitempty"`
 }

 type infoResponseFull struct {
@ -174,52 +169,27 @@ type infoResponseFull struct {
 	SlackResponse
 }

-// GetBotByID returns a bot given a bot id
+// GetBotByID is deprecated and returns nil
 func (info Info) GetBotByID(botID string) *Bot {
-	for _, bot := range info.Bots {
-		if bot.ID == botID {
-			return &bot
-		}
-	}
 	return nil
 }

-// GetUserByID returns a user given a user id
+// GetUserByID is deprecated and returns nil
 func (info Info) GetUserByID(userID string) *User {
-	for _, user := range info.Users {
-		if user.ID == userID {
-			return &user
-		}
-	}
 	return nil
 }

-// GetChannelByID returns a channel given a channel id
+// GetChannelByID is deprecated and returns nil
 func (info Info) GetChannelByID(channelID string) *Channel {
-	for _, channel := range info.Channels {
-		if channel.ID == channelID {
-			return &channel
-		}
-	}
 	return nil
 }

-// GetGroupByID returns a group given a group id
+// GetGroupByID is deprecated and returns nil
 func (info Info) GetGroupByID(groupID string) *Group {
-	for _, group := range info.Groups {
-		if group.ID == groupID {
-			return &group
-		}
-	}
 	return nil
 }

-// GetIMByID returns an IM given an IM id
+// GetIMByID is deprecated and returns nil
 func (info Info) GetIMByID(imID string) *IM {
-	for _, im := range info.IMs {
-		if im.ID == imID {
-			return &im
-		}
-	}
 	return nil
 }
--- a/vendor/github.com/nlopes/slack/interactions.go
+++ b/vendor/github.com/nlopes/slack/interactions.go
@ -22,6 +22,7 @@ const (
 	InteractionTypeDialogSuggestion   = InteractionType("dialog_suggestion")
 	InteractionTypeInteractionMessage = InteractionType("interactive_message")
 	InteractionTypeMessageAction      = InteractionType("message_action")
+	InteractionTypeBlockActions       = InteractionType("block_actions")
 )

 // InteractionCallback is sent from slack when a user interactions with a button or dialog.
--- a/vendor/github.com/nlopes/slack/messages.go
+++ b/vendor/github.com/nlopes/slack/messages.go
@ -98,6 +98,13 @@ type Msg struct {
 	Blocks Blocks `json:"blocks,omitempty"`
 }

+const (
+	// ResponseTypeInChannel in channel response for slash commands.
+	ResponseTypeInChannel = "in_channel"
+	// ResponseTypeEphemeral ephemeral respone for slash commands.
+	ResponseTypeEphemeral = "ephemeral"
+)
+
 // Icon is used for bot messages
 type Icon struct {
 	IconURL   string `json:"icon_url,omitempty"`
--- a/vendor/github.com/nlopes/slack/misc.go
+++ b/vendor/github.com/nlopes/slack/misc.go
@ -8,6 +8,7 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
+	"mime"
 	"mime/multipart"
 	"net/http"
 	"net/http/httputil"
@ -80,8 +81,8 @@ func fileUploadReq(ctx context.Context, path string, values url.Values, r io.Rea
 	if err != nil {
 		return nil, err
 	}
-	req = req.WithContext(ctx)

+	req = req.WithContext(ctx)
 	req.URL.RawQuery = (values).Encode()
 	return req, nil
 }
@ -117,6 +118,29 @@ func downloadFile(client httpClient, token string, downloadURL string, writer io
 	return err
 }

+func formReq(endpoint string, values url.Values) (req *http.Request, err error) {
+	if req, err = http.NewRequest("POST", endpoint, strings.NewReader(values.Encode())); err != nil {
+		return nil, err
+	}
+
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	return req, nil
+}
+
+func jsonReq(endpoint string, body interface{}) (req *http.Request, err error) {
+	buffer := bytes.NewBuffer([]byte{})
+	if err = json.NewEncoder(buffer).Encode(body); err != nil {
+		return nil, err
+	}
+
+	if req, err = http.NewRequest("POST", endpoint, buffer); err != nil {
+		return nil, err
+	}
+
+	req.Header.Set("Content-Type", "application/json; charset=utf-8")
+	return req, nil
+}
+
 func parseResponseBody(body io.ReadCloser, intf interface{}, d debug) error {
 	response, err := ioutil.ReadAll(body)
 	if err != nil {
@ -130,7 +154,7 @@ func parseResponseBody(body io.ReadCloser, intf interface{}, d debug) error {
 	return json.Unmarshal(response, intf)
 }

-func postLocalWithMultipartResponse(ctx context.Context, client httpClient, path, fpath, fieldname string, values url.Values, intf interface{}, d debug) error {
+func postLocalWithMultipartResponse(ctx context.Context, client httpClient, method, fpath, fieldname string, values url.Values, intf interface{}, d debug) error {
 	fullpath, err := filepath.Abs(fpath)
 	if err != nil {
 		return err
@ -140,7 +164,8 @@ func postLocalWithMultipartResponse(ctx context.Context, client httpClient, path
 		return err
 	}
 	defer file.Close()
-	return postWithMultipartResponse(ctx, client, path, filepath.Base(fpath), fieldname, values, file, intf, d)
+
+	return postWithMultipartResponse(ctx, client, method, filepath.Base(fpath), fieldname, values, file, intf, d)
 }

 func postWithMultipartResponse(ctx context.Context, client httpClient, path, name, fieldname string, values url.Values, r io.Reader, intf interface{}, d debug) error {
@ -186,11 +211,11 @@ func postWithMultipartResponse(ctx context.Context, client httpClient, path, nam
 	case err = <-errc:
 		return err
 	default:
-		return parseResponseBody(resp.Body, intf, d)
+		return newJSONParser(intf)(resp)
 	}
 }

-func doPost(ctx context.Context, client httpClient, req *http.Request, intf interface{}, d debug) error {
+func doPost(ctx context.Context, client httpClient, req *http.Request, parser responseParser, d debug) error {
 	req = req.WithContext(ctx)
 	resp, err := client.Do(req)
 	if err != nil {
@ -203,7 +228,7 @@ func doPost(ctx context.Context, client httpClient, req *http.Request, intf inte
 		return err
 	}

-	return parseResponseBody(resp.Body, intf, d)
+	return parser(resp)
 }

 // post JSON.
@ -215,7 +240,8 @@ func postJSON(ctx context.Context, client httpClient, endpoint, token string, js
 	}
 	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", token))
-	return doPost(ctx, client, req, intf, d)
+
+	return doPost(ctx, client, req, newJSONParser(intf), d)
 }

 // post a url encoded form.
@ -226,7 +252,7 @@ func postForm(ctx context.Context, client httpClient, endpoint string, values ur
 		return err
 	}
 	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
-	return doPost(ctx, client, req, intf, d)
+	return doPost(ctx, client, req, newJSONParser(intf), d)
 }

 func getResource(ctx context.Context, client httpClient, endpoint string, values url.Values, intf interface{}, d debug) error {
@ -237,7 +263,7 @@ func getResource(ctx context.Context, client httpClient, endpoint string, values
 	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
 	req.URL.RawQuery = values.Encode()

-	return doPost(ctx, client, req, intf, d)
+	return doPost(ctx, client, req, newJSONParser(intf), d)
 }

 func parseAdminResponse(ctx context.Context, client httpClient, method string, teamName string, values url.Values, intf interface{}, d debug) error {
@ -290,3 +316,45 @@ func checkStatusCode(resp *http.Response, d debug) error {

 	return nil
 }
+
+type responseParser func(*http.Response) error
+
+func newJSONParser(dst interface{}) responseParser {
+	return func(resp *http.Response) error {
+		return json.NewDecoder(resp.Body).Decode(dst)
+	}
+}
+
+func newTextParser(dst interface{}) responseParser {
+	return func(resp *http.Response) error {
+		b, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			return err
+		}
+
+		if !bytes.Equal(b, []byte("ok")) {
+			return errors.New(string(b))
+		}
+
+		return nil
+	}
+}
+
+func newContentTypeParser(dst interface{}) responseParser {
+	return func(req *http.Response) (err error) {
+		var (
+			ctype string
+		)
+
+		if ctype, _, err = mime.ParseMediaType(req.Header.Get("Content-Type")); err != nil {
+			return err
+		}
+
+		switch ctype {
+		case "application/json":
+			return newJSONParser(dst)(req)
+		default:
+			return newTextParser(dst)(req)
+		}
+	}
+}
--- a/vendor/github.com/nlopes/slack/search.go
+++ b/vendor/github.com/nlopes/slack/search.go
@ -41,6 +41,7 @@ type SearchMessage struct {
 	User        string       `json:"user"`
 	Username    string       `json:"username"`
 	Timestamp   string       `json:"ts"`
+	Blocks      Blocks       `json:"blocks,omitempty"`
 	Text        string       `json:"text"`
 	Permalink   string       `json:"permalink"`
 	Attachments []Attachment `json:"attachments"`
--- a/vendor/github.com/nlopes/slack/slack.go
+++ b/vendor/github.com/nlopes/slack/slack.go
@ -51,6 +51,8 @@ type authTestResponseFull struct {
 }

 // Client for the slack api.
+type ParamOption func(*url.Values)
+
 type Client struct {
 	token      string
 	endpoint   string
--- a/vendor/github.com/nlopes/slack/users.go
+++ b/vendor/github.com/nlopes/slack/users.go
@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"net/url"
 	"strconv"
+	"time"
 )

 const (
@ -117,6 +118,7 @@ type User struct {
 	IsUltraRestricted bool           `json:"is_ultra_restricted"`
 	IsStranger        bool           `json:"is_stranger"`
 	IsAppUser         bool           `json:"is_app_user"`
+	IsInvitedUser     bool           `json:"is_invited_user"`
 	Has2FA            bool           `json:"has_2fa"`
 	HasFiles          bool           `json:"has_files"`
 	Presence          string         `json:"presence"`
@ -345,12 +347,19 @@ func (api *Client) GetUsers() ([]User, error) {

 // GetUsersContext returns the list of users (with their detailed information) with a custom context
 func (api *Client) GetUsersContext(ctx context.Context) (results []User, err error) {
-	var (
-		p UserPagination
-	)
-
-	for p = api.GetUsersPaginated(); !p.Done(err); p, err = p.Next(ctx) {
-		results = append(results, p.Users...)
+	p := api.GetUsersPaginated()
+	for err == nil {
+		p, err = p.Next(ctx)
+		if err == nil {
+			results = append(results, p.Users...)
+		} else if rateLimitedError, ok := err.(*RateLimitedError); ok {
+			select {
+			case <-ctx.Done():
+				err = ctx.Err()
+			case <-time.After(rateLimitedError.RetryAfter):
+				err = nil
+			}
+		}
 	}

 	return results, p.Failure(err)
@ -411,13 +420,13 @@ func (api *Client) GetUserIdentity() (*UserIdentityResponse, error) {
 }

 // GetUserIdentityContext will retrieve user info available per identity scopes with a custom context
-func (api *Client) GetUserIdentityContext(ctx context.Context) (*UserIdentityResponse, error) {
+func (api *Client) GetUserIdentityContext(ctx context.Context) (response *UserIdentityResponse, err error) {
 	values := url.Values{
 		"token": {api.token},
 	}
-	response := &UserIdentityResponse{}
+	response = &UserIdentityResponse{}

-	err := api.postMethod(ctx, "users.identity", values, response)
+	err = api.postMethod(ctx, "users.identity", values, response)
 	if err != nil {
 		return nil, err
 	}
@ -435,7 +444,7 @@ func (api *Client) SetUserPhoto(image string, params UserSetPhotoParams) error {
 }

 // SetUserPhotoContext changes the currently authenticated user's profile image using a custom context
-func (api *Client) SetUserPhotoContext(ctx context.Context, image string, params UserSetPhotoParams) error {
+func (api *Client) SetUserPhotoContext(ctx context.Context, image string, params UserSetPhotoParams) (err error) {
 	response := &SlackResponse{}
 	values := url.Values{
 		"token": {api.token},
@ -450,7 +459,7 @@ func (api *Client) SetUserPhotoContext(ctx context.Context, image string, params
 		values.Add("crop_w", strconv.Itoa(params.CropW))
 	}

-	err := postLocalWithMultipartResponse(ctx, api.httpclient, api.endpoint+"users.setPhoto", image, "image", values, response, api)
+	err = postLocalWithMultipartResponse(ctx, api.httpclient, api.endpoint+"users.setPhoto", image, "image", values, response, api)
 	if err != nil {
 		return err
 	}
@ -464,13 +473,13 @@ func (api *Client) DeleteUserPhoto() error {
 }

 // DeleteUserPhotoContext deletes the current authenticated user's profile image with a custom context
-func (api *Client) DeleteUserPhotoContext(ctx context.Context) error {
+func (api *Client) DeleteUserPhotoContext(ctx context.Context) (err error) {
 	response := &SlackResponse{}
 	values := url.Values{
 		"token": {api.token},
 	}

-	err := api.postMethod(ctx, "users.deletePhoto", values, response)
+	err = api.postMethod(ctx, "users.deletePhoto", values, response)
 	if err != nil {
 		return err
 	}
@ -484,13 +493,27 @@ func (api *Client) DeleteUserPhotoContext(ctx context.Context) error {
 // the Slack API will unset the custom status/emoji. If statusExpiration is set to 0
 // the status will not expire.
 func (api *Client) SetUserCustomStatus(statusText, statusEmoji string, statusExpiration int64) error {
-	return api.SetUserCustomStatusContext(context.Background(), statusText, statusEmoji, statusExpiration)
+	return api.SetUserCustomStatusContextWithUser(context.Background(), "", statusText, statusEmoji, statusExpiration)
 }

 // SetUserCustomStatusContext will set a custom status and emoji for the currently authenticated user with a custom context
 //
 // For more information see SetUserCustomStatus
 func (api *Client) SetUserCustomStatusContext(ctx context.Context, statusText, statusEmoji string, statusExpiration int64) error {
+	return api.SetUserCustomStatusContextWithUser(context.Background(), "", statusText, statusEmoji, statusExpiration)
+}
+
+// SetUserCustomStatusWithUser will set a custom status and emoji for the provided user.
+//
+// For more information see SetUserCustomStatus
+func (api *Client) SetUserCustomStatusWithUser(user, statusText, statusEmoji string, statusExpiration int64) error {
+	return api.SetUserCustomStatusContextWithUser(context.Background(), user, statusText, statusEmoji, statusExpiration)
+}
+
+// SetUserCustomStatusContextWithUser will set a custom status and emoji for the provided user with a custom context
+//
+// For more information see SetUserCustomStatus
+func (api *Client) SetUserCustomStatusContextWithUser(ctx context.Context, user, statusText, statusEmoji string, statusExpiration int64) error {
 	// XXX(theckman): this anonymous struct is for making requests to the Slack
 	// API for setting and unsetting a User's Custom Status/Emoji. To change
 	// these values we must provide a JSON document as the profile POST field.
@ -518,6 +541,7 @@ func (api *Client) SetUserCustomStatusContext(ctx context.Context, statusText, s
 	}

 	values := url.Values{
+		"user":    {user},
 		"token":   {api.token},
 		"profile": {string(profile)},
 	}
--- a/vendor/github.com/nlopes/slack/webhooks.go
+++ b/vendor/github.com/nlopes/slack/webhooks.go
@ -20,13 +20,17 @@ type WebhookMessage struct {
 }

 func PostWebhook(url string, msg *WebhookMessage) error {
+	return PostWebhookCustomHTTP(url, http.DefaultClient, msg)
+}
+
+func PostWebhookCustomHTTP(url string, httpClient *http.Client, msg *WebhookMessage) error {
 	raw, err := json.Marshal(msg)

 	if err != nil {
 		return errors.Wrap(err, "marshal failed")
 	}

-	response, err := http.Post(url, "application/json", bytes.NewReader(raw))
+	response, err := httpClient.Post(url, "application/json", bytes.NewReader(raw))

 	if err != nil {
 		return errors.Wrap(err, "failed to post webhook")
--- a/vendor/github.com/nlopes/slack/websocket.go
+++ b/vendor/github.com/nlopes/slack/websocket.go
@ -78,9 +78,8 @@ func (rtm *RTM) Disconnect() error {
 }

 // GetInfo returns the info structure received when calling
-// "startrtm", holding all channels, groups and other metadata needed
-// to implement a full chat client. It will be non-nil after a call to
-// StartRTM().
+// "startrtm", holding metadata needed to implement a full
+// chat client. It will be non-nil after a call to StartRTM().
 func (rtm *RTM) GetInfo() *Info {
 	return rtm.info
 }
--- a/vendor/github.com/nlopes/slack/websocket_internals.go
+++ b/vendor/github.com/nlopes/slack/websocket_internals.go
@ -35,6 +35,7 @@ type ConnectingEvent struct {
 // DisconnectedEvent contains information about how we disconnected
 type DisconnectedEvent struct {
 	Intentional bool
+	Cause       error
 }

 // LatencyReport contains information about connection latency
--- a/vendor/github.com/nlopes/slack/websocket_managed_conn.go
+++ b/vendor/github.com/nlopes/slack/websocket_managed_conn.go
@ -10,6 +10,7 @@ import (
 	"time"

 	"github.com/gorilla/websocket"
+	"github.com/nlopes/slack/internal/errorsx"
 	"github.com/nlopes/slack/internal/timex"
 )

@ -138,21 +139,22 @@ func (rtm *RTM) connect(connectionCount int, useRTMStart bool) (*Info, *websocke
 			ErrorObj: err,
 		}}

-		// check if Disconnect() has been invoked.
+		// get time we should wait before attempting to connect again
+		rtm.Debugf("reconnection %d failed: %s reconnecting in %v\n", boff.attempts, err, backoff)
+
+		// wait for one of the following to occur,
+		// backoff duration has elapsed, killChannel is signalled, or
+		// the rtm finishes disconnecting.
 		select {
+		case <-time.After(backoff): // retry after the backoff.
 		case intentional := <-rtm.killChannel:
 			if intentional {
-				rtm.killConnection(intentional)
+				rtm.killConnection(intentional, ErrRTMDisconnected)
 				return nil, nil, ErrRTMDisconnected
 			}
 		case <-rtm.disconnected:
 			return nil, nil, ErrRTMDisconnected
-		default:
 		}
-
-		// get time we should wait before attempting to connect again
-		rtm.Debugf("reconnection %d failed: %s reconnecting in %v\n", boff.attempts, err, backoff)
-		time.Sleep(backoff)
 	}
 }

@ -205,14 +207,14 @@ func (rtm *RTM) startRTMAndDial(useRTMStart bool) (info *Info, _ *websocket.Conn
 //
 // This should not be called directly! Instead a boolean value (true for
 // intentional, false otherwise) should be sent to the killChannel on the RTM.
-func (rtm *RTM) killConnection(intentional bool) (err error) {
+func (rtm *RTM) killConnection(intentional bool, cause error) (err error) {
 	rtm.Debugln("killing connection")

 	if rtm.conn != nil {
 		err = rtm.conn.Close()
 	}

-	rtm.IncomingEvents <- RTMEvent{"disconnected", &DisconnectedEvent{intentional}}
+	rtm.IncomingEvents <- RTMEvent{"disconnected", &DisconnectedEvent{Intentional: intentional, Cause: cause}}

 	if intentional {
 		rtm.disconnect()
@ -233,22 +235,21 @@ func (rtm *RTM) handleEvents() {
 		select {
 		// catch "stop" signal on channel close
 		case intentional := <-rtm.killChannel:
-			_ = rtm.killConnection(intentional)
+			_ = rtm.killConnection(intentional, errorsx.String("signaled"))
 			return
 		// detect when the connection is dead.
 		case <-rtm.pingDeadman.C:
-			rtm.Debugln("deadman switch trigger disconnecting")
-			_ = rtm.killConnection(false)
+			_ = rtm.killConnection(false, errorsx.String("deadman switch triggered"))
 			return
 		// send pings on ticker interval
 		case <-ticker.C:
 			if err := rtm.ping(); err != nil {
-				_ = rtm.killConnection(false)
+				_ = rtm.killConnection(false, err)
 				return
 			}
 		case <-rtm.forcePing:
 			if err := rtm.ping(); err != nil {
-				_ = rtm.killConnection(false)
+				_ = rtm.killConnection(false, err)
 				return
 			}
 		// listen for messages that need to be sent
@ -258,7 +259,7 @@ func (rtm *RTM) handleEvents() {
 		case rawEvent := <-rtm.rawEvents:
 			switch rtm.handleRawEvent(rawEvent) {
 			case rtmEventTypeGoodbye:
-				_ = rtm.killConnection(false)
+				_ = rtm.killConnection(false, errorsx.String("goodbye detected"))
 				return
 			default:
 			}
@ -310,7 +311,6 @@ func (rtm *RTM) sendOutgoingMessage(msg OutgoingMessage) {
 			Message:  msg,
 			ErrorObj: err,
 		}}
-		// TODO force ping?
 	}
 }

--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@ -2,7 +2,7 @@
 github.com/0xAX/notificator
 # github.com/erroneousboat/termui v0.0.0-20170923115141-80f245cdfa04
 github.com/erroneousboat/termui
-# github.com/gorilla/websocket v1.4.0
+# github.com/gorilla/websocket v1.4.1
 github.com/gorilla/websocket
 # github.com/maruel/panicparse v1.1.1
 github.com/maruel/panicparse/stack
@ -10,7 +10,7 @@ github.com/maruel/panicparse/stack
 github.com/mattn/go-runewidth
 # github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7
 github.com/mitchellh/go-wordwrap
-# github.com/nlopes/slack v0.5.1-0.20190515005541-e2954b1409b0
+# github.com/nlopes/slack v0.6.0
 github.com/nlopes/slack
 github.com/nlopes/slack/internal/errorsx
 github.com/nlopes/slack/internal/timex