mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-03 19:50:19 +00:00
346 lines
8.6 KiB
Go
346 lines
8.6 KiB
Go
/*
|
|
* Copyright 2018 gRPC authors.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package test
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"io"
|
|
"net"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
"golang.org/x/net/http2"
|
|
"golang.org/x/net/http2/hpack"
|
|
)
|
|
|
|
type listenerWrapper struct {
|
|
net.Listener
|
|
mu sync.Mutex
|
|
rcw *rawConnWrapper
|
|
}
|
|
|
|
func listenWithConnControl(network, address string) (net.Listener, error) {
|
|
l, err := net.Listen(network, address)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &listenerWrapper{Listener: l}, nil
|
|
}
|
|
|
|
// Accept blocks until Dial is called, then returns a net.Conn for the server
|
|
// half of the connection.
|
|
func (l *listenerWrapper) Accept() (net.Conn, error) {
|
|
c, err := l.Listener.Accept()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
l.mu.Lock()
|
|
l.rcw = newRawConnWrapperFromConn(c)
|
|
l.mu.Unlock()
|
|
return c, nil
|
|
}
|
|
|
|
func (l *listenerWrapper) getLastConn() *rawConnWrapper {
|
|
l.mu.Lock()
|
|
defer l.mu.Unlock()
|
|
return l.rcw
|
|
}
|
|
|
|
type dialerWrapper struct {
|
|
c net.Conn
|
|
rcw *rawConnWrapper
|
|
}
|
|
|
|
func (d *dialerWrapper) dialer(target string, t time.Duration) (net.Conn, error) {
|
|
c, err := net.DialTimeout("tcp", target, t)
|
|
d.c = c
|
|
d.rcw = newRawConnWrapperFromConn(c)
|
|
return c, err
|
|
}
|
|
|
|
func (d *dialerWrapper) getRawConnWrapper() *rawConnWrapper {
|
|
return d.rcw
|
|
}
|
|
|
|
type rawConnWrapper struct {
|
|
cc io.ReadWriteCloser
|
|
fr *http2.Framer
|
|
|
|
// writing headers:
|
|
headerBuf bytes.Buffer
|
|
hpackEnc *hpack.Encoder
|
|
|
|
// reading frames:
|
|
frc chan http2.Frame
|
|
frErrc chan error
|
|
readTimer *time.Timer
|
|
}
|
|
|
|
func newRawConnWrapperFromConn(cc io.ReadWriteCloser) *rawConnWrapper {
|
|
rcw := &rawConnWrapper{
|
|
cc: cc,
|
|
frc: make(chan http2.Frame, 1),
|
|
frErrc: make(chan error, 1),
|
|
}
|
|
rcw.hpackEnc = hpack.NewEncoder(&rcw.headerBuf)
|
|
rcw.fr = http2.NewFramer(cc, cc)
|
|
rcw.fr.ReadMetaHeaders = hpack.NewDecoder(4096 /*initialHeaderTableSize*/, nil)
|
|
|
|
return rcw
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) Close() error {
|
|
return rcw.cc.Close()
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) readFrame() (http2.Frame, error) {
|
|
go func() {
|
|
fr, err := rcw.fr.ReadFrame()
|
|
if err != nil {
|
|
rcw.frErrc <- err
|
|
} else {
|
|
rcw.frc <- fr
|
|
}
|
|
}()
|
|
t := time.NewTimer(2 * time.Second)
|
|
defer t.Stop()
|
|
select {
|
|
case f := <-rcw.frc:
|
|
return f, nil
|
|
case err := <-rcw.frErrc:
|
|
return nil, err
|
|
case <-t.C:
|
|
return nil, fmt.Errorf("timeout waiting for frame")
|
|
}
|
|
}
|
|
|
|
// greet initiates the client's HTTP/2 connection into a state where
|
|
// frames may be sent.
|
|
func (rcw *rawConnWrapper) greet() error {
|
|
rcw.writePreface()
|
|
rcw.writeInitialSettings()
|
|
rcw.wantSettings()
|
|
rcw.writeSettingsAck()
|
|
for {
|
|
f, err := rcw.readFrame()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
switch f := f.(type) {
|
|
case *http2.WindowUpdateFrame:
|
|
// grpc's transport/http2_server sends this
|
|
// before the settings ack. The Go http2
|
|
// server uses a setting instead.
|
|
case *http2.SettingsFrame:
|
|
if f.IsAck() {
|
|
return nil
|
|
}
|
|
return fmt.Errorf("during greet, got non-ACK settings frame")
|
|
default:
|
|
return fmt.Errorf("during greet, unexpected frame type %T", f)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) writePreface() error {
|
|
n, err := rcw.cc.Write([]byte(http2.ClientPreface))
|
|
if err != nil {
|
|
return fmt.Errorf("Error writing client preface: %v", err)
|
|
}
|
|
if n != len(http2.ClientPreface) {
|
|
return fmt.Errorf("Writing client preface, wrote %d bytes; want %d", n, len(http2.ClientPreface))
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) writeInitialSettings() error {
|
|
if err := rcw.fr.WriteSettings(); err != nil {
|
|
return fmt.Errorf("Error writing initial SETTINGS frame from client to server: %v", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) writeSettingsAck() error {
|
|
if err := rcw.fr.WriteSettingsAck(); err != nil {
|
|
return fmt.Errorf("Error writing ACK of server's SETTINGS: %v", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) wantSettings() (*http2.SettingsFrame, error) {
|
|
f, err := rcw.readFrame()
|
|
if err != nil {
|
|
return nil, fmt.Errorf("Error while expecting a SETTINGS frame: %v", err)
|
|
}
|
|
sf, ok := f.(*http2.SettingsFrame)
|
|
if !ok {
|
|
return nil, fmt.Errorf("got a %T; want *SettingsFrame", f)
|
|
}
|
|
return sf, nil
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) wantSettingsAck() error {
|
|
f, err := rcw.readFrame()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
sf, ok := f.(*http2.SettingsFrame)
|
|
if !ok {
|
|
return fmt.Errorf("Wanting a settings ACK, received a %T", f)
|
|
}
|
|
if !sf.IsAck() {
|
|
return fmt.Errorf("Settings Frame didn't have ACK set")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// wait for any activity from the server
|
|
func (rcw *rawConnWrapper) wantAnyFrame() (http2.Frame, error) {
|
|
f, err := rcw.fr.ReadFrame()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return f, nil
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) encodeHeaderField(k, v string) error {
|
|
err := rcw.hpackEnc.WriteField(hpack.HeaderField{Name: k, Value: v})
|
|
if err != nil {
|
|
return fmt.Errorf("HPACK encoding error for %q/%q: %v", k, v, err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// encodeHeader encodes headers and returns their HPACK bytes. headers
|
|
// must contain an even number of key/value pairs. There may be
|
|
// multiple pairs for keys (e.g. "cookie"). The :method, :path, and
|
|
// :scheme headers default to GET, / and https.
|
|
func (rcw *rawConnWrapper) encodeHeader(headers ...string) []byte {
|
|
if len(headers)%2 == 1 {
|
|
panic("odd number of kv args")
|
|
}
|
|
|
|
rcw.headerBuf.Reset()
|
|
|
|
if len(headers) == 0 {
|
|
// Fast path, mostly for benchmarks, so test code doesn't pollute
|
|
// profiles when we're looking to improve server allocations.
|
|
rcw.encodeHeaderField(":method", "GET")
|
|
rcw.encodeHeaderField(":path", "/")
|
|
rcw.encodeHeaderField(":scheme", "https")
|
|
return rcw.headerBuf.Bytes()
|
|
}
|
|
|
|
if len(headers) == 2 && headers[0] == ":method" {
|
|
// Another fast path for benchmarks.
|
|
rcw.encodeHeaderField(":method", headers[1])
|
|
rcw.encodeHeaderField(":path", "/")
|
|
rcw.encodeHeaderField(":scheme", "https")
|
|
return rcw.headerBuf.Bytes()
|
|
}
|
|
|
|
pseudoCount := map[string]int{}
|
|
keys := []string{":method", ":path", ":scheme"}
|
|
vals := map[string][]string{
|
|
":method": {"GET"},
|
|
":path": {"/"},
|
|
":scheme": {"https"},
|
|
}
|
|
for len(headers) > 0 {
|
|
k, v := headers[0], headers[1]
|
|
headers = headers[2:]
|
|
if _, ok := vals[k]; !ok {
|
|
keys = append(keys, k)
|
|
}
|
|
if strings.HasPrefix(k, ":") {
|
|
pseudoCount[k]++
|
|
if pseudoCount[k] == 1 {
|
|
vals[k] = []string{v}
|
|
} else {
|
|
// Allows testing of invalid headers w/ dup pseudo fields.
|
|
vals[k] = append(vals[k], v)
|
|
}
|
|
} else {
|
|
vals[k] = append(vals[k], v)
|
|
}
|
|
}
|
|
for _, k := range keys {
|
|
for _, v := range vals[k] {
|
|
rcw.encodeHeaderField(k, v)
|
|
}
|
|
}
|
|
return rcw.headerBuf.Bytes()
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) writeHeadersGRPC(streamID uint32, path string) {
|
|
rcw.writeHeaders(http2.HeadersFrameParam{
|
|
StreamID: streamID,
|
|
BlockFragment: rcw.encodeHeader(
|
|
":method", "POST",
|
|
":path", path,
|
|
"content-type", "application/grpc",
|
|
"te", "trailers",
|
|
),
|
|
EndStream: false,
|
|
EndHeaders: true,
|
|
})
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) writeHeaders(p http2.HeadersFrameParam) error {
|
|
if err := rcw.fr.WriteHeaders(p); err != nil {
|
|
return fmt.Errorf("Error writing HEADERS: %v", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) writeData(streamID uint32, endStream bool, data []byte) error {
|
|
if err := rcw.fr.WriteData(streamID, endStream, data); err != nil {
|
|
return fmt.Errorf("Error writing DATA: %v", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) writeRSTStream(streamID uint32, code http2.ErrCode) error {
|
|
if err := rcw.fr.WriteRSTStream(streamID, code); err != nil {
|
|
return fmt.Errorf("Error writing RST_STREAM: %v", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) writeDataPadded(streamID uint32, endStream bool, data, padding []byte) error {
|
|
if err := rcw.fr.WriteDataPadded(streamID, endStream, data, padding); err != nil {
|
|
return fmt.Errorf("Error writing DATA with padding: %v", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) writeGoAway(maxStreamID uint32, code http2.ErrCode, debugData []byte) error {
|
|
if err := rcw.fr.WriteGoAway(maxStreamID, code, debugData); err != nil {
|
|
return fmt.Errorf("Error writing GoAway: %v", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (rcw *rawConnWrapper) writeRawFrame(t http2.FrameType, flags http2.Flags, streamID uint32, payload []byte) error {
|
|
if err := rcw.fr.WriteRawFrame(t, flags, streamID, payload); err != nil {
|
|
return fmt.Errorf("Error writing Raw Frame: %v", err)
|
|
}
|
|
return nil
|
|
}
|