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/*
*
* Copyright 2019 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.
*
*/
#import "TestHelper.h"
#import <Cronet/Cronet.h>
#import <grpcpp/impl/codegen/string_ref.h>
#import <grpcpp/support/config.h>
using grpc::ServerContext;
using grpc::Status;
using grpc::testing::EchoRequest;
using grpc::testing::EchoResponse;
using grpc::testing::EchoTestService;
using std::chrono::system_clock;
std::atomic<int> PhonyInterceptor::num_times_run_;
std::atomic<int> PhonyInterceptor::num_times_run_reverse_;
std::string ToString(const grpc::string_ref& r) { return std::string(r.data(), r.size()); }
void configureCronet(void) {
static dispatch_once_t configureCronet;
dispatch_once(&configureCronet, ^{
[Cronet setHttp2Enabled:YES];
[Cronet setSslKeyLogFileName:@"Documents/key"];
[Cronet enableTestCertVerifierForTesting];
NSURL* url = [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory
inDomains:NSUserDomainMask] lastObject];
[Cronet start];
[Cronet startNetLogToFile:@"cronet_netlog.json" logBytes:YES];
});
}
bool CheckIsLocalhost(const std::string& addr) {
const std::string kIpv6("[::1]:");
const std::string kIpv4MappedIpv6("[::ffff:127.0.0.1]:");
const std::string kIpv4("127.0.0.1:");
return addr.substr(0, kIpv4.size()) == kIpv4 ||
addr.substr(0, kIpv4MappedIpv6.size()) == kIpv4MappedIpv6 ||
addr.substr(0, kIpv6.size()) == kIpv6;
}
int GetIntValueFromMetadataHelper(const char* key,
const std::multimap<grpc::string_ref, grpc::string_ref>& metadata,
int default_value) {
if (metadata.find(key) != metadata.end()) {
std::istringstream iss(ToString(metadata.find(key)->second));
iss >> default_value;
}
return default_value;
}
int GetIntValueFromMetadata(const char* key,
const std::multimap<grpc::string_ref, grpc::string_ref>& metadata,
int default_value) {
return GetIntValueFromMetadataHelper(key, metadata, default_value);
}
// When echo_deadline is requested, deadline seen in the ServerContext is set in
// the response in seconds.
void MaybeEchoDeadline(ServerContext* context, const EchoRequest* request, EchoResponse* response) {
if (request->has_param() && request->param().echo_deadline()) {
gpr_timespec deadline = gpr_inf_future(GPR_CLOCK_REALTIME);
if (context->deadline() != system_clock::time_point::max()) {
grpc::Timepoint2Timespec(context->deadline(), &deadline);
}
response->mutable_param()->set_request_deadline(deadline.tv_sec);
}
}
Status TestServiceImpl::Echo(ServerContext* context, const EchoRequest* request,
EchoResponse* response) {
// A bit of sleep to make sure that short deadline tests fail
if (request->has_param() && request->param().server_sleep_us() > 0) {
gpr_sleep_until(
gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC),
gpr_time_from_micros(request->param().server_sleep_us(), GPR_TIMESPAN)));
}
if (request->has_param() && request->param().has_expected_error()) {
const auto& error = request->param().expected_error();
return Status(static_cast<grpc::StatusCode>(error.code()), error.error_message(),
error.binary_error_details());
}
if (request->has_param() && request->param().echo_metadata()) {
const std::multimap<grpc::string_ref, grpc::string_ref>& client_metadata =
context->client_metadata();
for (std::multimap<grpc::string_ref, grpc::string_ref>::const_iterator iter =
client_metadata.begin();
iter != client_metadata.end(); ++iter) {
context->AddTrailingMetadata(ToString(iter->first), ToString(iter->second));
}
// Terminate rpc with error and debug info in trailer.
if (request->param().debug_info().stack_entries_size() ||
!request->param().debug_info().detail().empty()) {
std::string serialized_debug_info = request->param().debug_info().SerializeAsString();
context->AddTrailingMetadata(kDebugInfoTrailerKey, serialized_debug_info);
return Status::CANCELLED;
}
}
response->set_message(request->message());
MaybeEchoDeadline(context, request, response);
return Status::OK;
}
Status TestServiceImpl::RequestStream(ServerContext* context,
grpc::ServerReader<EchoRequest>* reader,
EchoResponse* response) {
EchoRequest request;
response->set_message("");
int num_msgs_read = 0;
while (reader->Read(&request)) {
response->mutable_message()->append(request.message());
++num_msgs_read;
}
return Status::OK;
}
Status TestServiceImpl::ResponseStream(ServerContext* context, const EchoRequest* request,
grpc::ServerWriter<EchoResponse>* writer) {
EchoResponse response;
int server_responses_to_send =
GetIntValueFromMetadata(kServerResponseStreamsToSend, context->client_metadata(),
kServerDefaultResponseStreamsToSend);
for (int i = 0; i < server_responses_to_send; i++) {
response.set_message(request->message() + std::to_string(i));
if (i == server_responses_to_send - 1) {
writer->WriteLast(response, grpc::WriteOptions());
} else {
writer->Write(response);
}
}
return Status::OK;
}
Status TestServiceImpl::BidiStream(ServerContext* context,
grpc::ServerReaderWriter<EchoResponse, EchoRequest>* stream) {
EchoRequest request;
EchoResponse response;
// kServerFinishAfterNReads suggests after how many reads, the server should
// write the last message and send status (coalesced using WriteLast)
int server_write_last =
GetIntValueFromMetadata(kServerFinishAfterNReads, context->client_metadata(), 0);
int read_counts = 0;
while (stream->Read(&request)) {
read_counts++;
response.set_message(request.message());
if (read_counts == server_write_last) {
stream->WriteLast(response, grpc::WriteOptions());
} else {
stream->Write(response);
}
}
return Status::OK;
}
void PhonyInterceptor::Intercept(grpc::experimental::InterceptorBatchMethods* methods) {
if (methods->QueryInterceptionHookPoint(
grpc::experimental::InterceptionHookPoints::PRE_SEND_INITIAL_METADATA)) {
num_times_run_++;
} else if (methods->QueryInterceptionHookPoint(
grpc::experimental::InterceptionHookPoints::POST_RECV_INITIAL_METADATA)) {
num_times_run_reverse_++;
}
methods->Proceed();
}
void PhonyInterceptor::Reset() {
num_times_run_.store(0);
num_times_run_reverse_.store(0);
}
int PhonyInterceptor::GetNumTimesRun() {
NSCAssert(num_times_run_.load() == num_times_run_reverse_.load(),
@"Interceptor must run same number of times in both directions");
return num_times_run_.load();
}
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