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negative_http2_client.go
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/
negative_http2_client.go
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/*
*
* Copyright 2016 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.
*
*/
// Binary http2 is used to test http2 error edge cases like GOAWAYs and
// RST_STREAMs
//
// Documentation:
// https://github.com/grpc/grpc/blob/master/doc/negative-http2-interop-test-descriptions.md
package main
import (
"context"
"flag"
"net"
"strconv"
"sync"
"time"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/grpclog"
"google.golang.org/grpc/interop"
testpb "google.golang.org/grpc/interop/grpc_testing"
"google.golang.org/grpc/status"
)
var (
serverHost = flag.String("server_host", "localhost", "The server host name")
serverPort = flag.Int("server_port", 8080, "The server port number")
testCase = flag.String("test_case", "goaway",
`Configure different test cases. Valid options are:
goaway : client sends two requests, the server will send a goaway in between;
rst_after_header : server will send rst_stream after it sends headers;
rst_during_data : server will send rst_stream while sending data;
rst_after_data : server will send rst_stream after sending data;
ping : server will send pings between each http2 frame;
max_streams : server will ensure that the max_concurrent_streams limit is upheld;`)
largeReqSize = 271828
largeRespSize = 314159
logger = grpclog.Component("interop")
)
func largeSimpleRequest() *testpb.SimpleRequest {
pl := interop.ClientNewPayload(testpb.PayloadType_COMPRESSABLE, largeReqSize)
return &testpb.SimpleRequest{
ResponseType: testpb.PayloadType_COMPRESSABLE,
ResponseSize: int32(largeRespSize),
Payload: pl,
}
}
// sends two unary calls. The server asserts that the calls use different connections.
func goaway(tc testpb.TestServiceClient) {
interop.DoLargeUnaryCall(tc)
// sleep to ensure that the client has time to recv the GOAWAY.
// TODO(ncteisen): make this less hacky.
time.Sleep(1 * time.Second)
interop.DoLargeUnaryCall(tc)
}
func rstAfterHeader(tc testpb.TestServiceClient) {
req := largeSimpleRequest()
reply, err := tc.UnaryCall(context.Background(), req)
if reply != nil {
logger.Fatalf("Client received reply despite server sending rst stream after header")
}
if status.Code(err) != codes.Internal {
logger.Fatalf("%v.UnaryCall() = _, %v, want _, %v", tc, status.Code(err), codes.Internal)
}
}
func rstDuringData(tc testpb.TestServiceClient) {
req := largeSimpleRequest()
reply, err := tc.UnaryCall(context.Background(), req)
if reply != nil {
logger.Fatalf("Client received reply despite server sending rst stream during data")
}
if status.Code(err) != codes.Unknown {
logger.Fatalf("%v.UnaryCall() = _, %v, want _, %v", tc, status.Code(err), codes.Unknown)
}
}
func rstAfterData(tc testpb.TestServiceClient) {
req := largeSimpleRequest()
reply, err := tc.UnaryCall(context.Background(), req)
if reply != nil {
logger.Fatalf("Client received reply despite server sending rst stream after data")
}
if status.Code(err) != codes.Internal {
logger.Fatalf("%v.UnaryCall() = _, %v, want _, %v", tc, status.Code(err), codes.Internal)
}
}
func ping(tc testpb.TestServiceClient) {
// The server will assert that every ping it sends was ACK-ed by the client.
interop.DoLargeUnaryCall(tc)
}
func maxStreams(tc testpb.TestServiceClient) {
interop.DoLargeUnaryCall(tc)
var wg sync.WaitGroup
for i := 0; i < 15; i++ {
wg.Add(1)
go func() {
defer wg.Done()
interop.DoLargeUnaryCall(tc)
}()
}
wg.Wait()
}
func main() {
flag.Parse()
serverAddr := net.JoinHostPort(*serverHost, strconv.Itoa(*serverPort))
var opts []grpc.DialOption
opts = append(opts, grpc.WithInsecure())
conn, err := grpc.Dial(serverAddr, opts...)
if err != nil {
logger.Fatalf("Fail to dial: %v", err)
}
defer conn.Close()
tc := testpb.NewTestServiceClient(conn)
switch *testCase {
case "goaway":
goaway(tc)
logger.Infoln("goaway done")
case "rst_after_header":
rstAfterHeader(tc)
logger.Infoln("rst_after_header done")
case "rst_during_data":
rstDuringData(tc)
logger.Infoln("rst_during_data done")
case "rst_after_data":
rstAfterData(tc)
logger.Infoln("rst_after_data done")
case "ping":
ping(tc)
logger.Infoln("ping done")
case "max_streams":
maxStreams(tc)
logger.Infoln("max_streams done")
default:
logger.Fatal("Unsupported test case: ", *testCase)
}
}