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Remove nsenter packages from vendor

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Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna
2019-09-20 16:15:13 +05:30
committed by mergify[bot]
parent 70d49b4e47
commit d4a67c05f3
246 changed files with 10204 additions and 3356 deletions
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52
vendor/golang.org/x/net/http2/server.go generated vendored
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@ -52,10 +52,11 @@ import (
)
const (
prefaceTimeout = 10 * time.Second
firstSettingsTimeout = 2 * time.Second // should be in-flight with preface anyway
handlerChunkWriteSize = 4 << 10
defaultMaxStreams = 250 // TODO: make this 100 as the GFE seems to?
prefaceTimeout = 10 * time.Second
firstSettingsTimeout = 2 * time.Second // should be in-flight with preface anyway
handlerChunkWriteSize = 4 << 10
defaultMaxStreams = 250 // TODO: make this 100 as the GFE seems to?
maxQueuedControlFrames = 10000
)
var (
@ -163,6 +164,15 @@ func (s *Server) maxConcurrentStreams() uint32 {
return defaultMaxStreams
}
// maxQueuedControlFrames is the maximum number of control frames like
// SETTINGS, PING and RST_STREAM that will be queued for writing before
// the connection is closed to prevent memory exhaustion attacks.
func (s *Server) maxQueuedControlFrames() int {
// TODO: if anybody asks, add a Server field, and remember to define the
// behavior of negative values.
return maxQueuedControlFrames
}
type serverInternalState struct {
mu sync.Mutex
activeConns map[*serverConn]struct{}
@ -312,7 +322,7 @@ type ServeConnOpts struct {
}
func (o *ServeConnOpts) context() context.Context {
if o.Context != nil {
if o != nil && o.Context != nil {
return o.Context
}
return context.Background()
@ -506,6 +516,7 @@ type serverConn struct {
sawFirstSettings bool // got the initial SETTINGS frame after the preface
needToSendSettingsAck bool
unackedSettings int // how many SETTINGS have we sent without ACKs?
queuedControlFrames int // control frames in the writeSched queue
clientMaxStreams uint32 // SETTINGS_MAX_CONCURRENT_STREAMS from client (our PUSH_PROMISE limit)
advMaxStreams uint32 // our SETTINGS_MAX_CONCURRENT_STREAMS advertised the client
curClientStreams uint32 // number of open streams initiated by the client
@ -894,6 +905,14 @@ func (sc *serverConn) serve() {
}
}
// If the peer is causing us to generate a lot of control frames,
// but not reading them from us, assume they are trying to make us
// run out of memory.
if sc.queuedControlFrames > sc.srv.maxQueuedControlFrames() {
sc.vlogf("http2: too many control frames in send queue, closing connection")
return
}
// Start the shutdown timer after sending a GOAWAY. When sending GOAWAY
// with no error code (graceful shutdown), don't start the timer until
// all open streams have been completed.
@ -1093,6 +1112,14 @@ func (sc *serverConn) writeFrame(wr FrameWriteRequest) {
}
if !ignoreWrite {
if wr.isControl() {
sc.queuedControlFrames++
// For extra safety, detect wraparounds, which should not happen,
// and pull the plug.
if sc.queuedControlFrames < 0 {
sc.conn.Close()
}
}
sc.writeSched.Push(wr)
}
sc.scheduleFrameWrite()
@ -1210,10 +1237,8 @@ func (sc *serverConn) wroteFrame(res frameWriteResult) {
// If a frame is already being written, nothing happens. This will be called again
// when the frame is done being written.
//
// If a frame isn't being written we need to send one, the best frame
// to send is selected, preferring first things that aren't
// stream-specific (e.g. ACKing settings), and then finding the
// highest priority stream.
// If a frame isn't being written and we need to send one, the best frame
// to send is selected by writeSched.
//
// If a frame isn't being written and there's nothing else to send, we
// flush the write buffer.
@ -1241,6 +1266,9 @@ func (sc *serverConn) scheduleFrameWrite() {
}
if !sc.inGoAway || sc.goAwayCode == ErrCodeNo {
if wr, ok := sc.writeSched.Pop(); ok {
if wr.isControl() {
sc.queuedControlFrames--
}
sc.startFrameWrite(wr)
continue
}
@ -1533,6 +1561,8 @@ func (sc *serverConn) processSettings(f *SettingsFrame) error {
if err := f.ForeachSetting(sc.processSetting); err != nil {
return err
}
// TODO: judging by RFC 7540, Section 6.5.3 each SETTINGS frame should be
// acknowledged individually, even if multiple are received before the ACK.
sc.needToSendSettingsAck = true
sc.scheduleFrameWrite()
return nil
@ -2494,7 +2524,7 @@ const TrailerPrefix = "Trailer:"
// trailers. That worked for a while, until we found the first major
// user of Trailers in the wild: gRPC (using them only over http2),
// and gRPC libraries permit setting trailers mid-stream without
// predeclarnig them. So: change of plans. We still permit the old
// predeclaring them. So: change of plans. We still permit the old
// way, but we also permit this hack: if a Header() key begins with
// "Trailer:", the suffix of that key is a Trailer. Because ':' is an
// invalid token byte anyway, there is no ambiguity. (And it's already
@ -2794,7 +2824,7 @@ func (sc *serverConn) startPush(msg *startPushRequest) {
// PUSH_PROMISE frames MUST only be sent on a peer-initiated stream that
// is in either the "open" or "half-closed (remote)" state.
if msg.parent.state != stateOpen && msg.parent.state != stateHalfClosedRemote {
// responseWriter.Push checks that the stream is peer-initiaed.
// responseWriter.Push checks that the stream is peer-initiated.
msg.done <- errStreamClosed
return
}