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protocol_integration_test.cc
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#include <functional>
#include <list>
#include <memory>
#include <regex>
#include <string>
#include <vector>
#include "envoy/buffer/buffer.h"
#include "envoy/config/bootstrap/v3/bootstrap.pb.h"
#include "envoy/config/route/v3/route_components.pb.h"
#include "envoy/event/dispatcher.h"
#include "envoy/extensions/filters/network/http_connection_manager/v3/http_connection_manager.pb.h"
#include "envoy/http/header_map.h"
#include "envoy/registry/registry.h"
#include "common/api/api_impl.h"
#include "common/buffer/buffer_impl.h"
#include "common/common/fmt.h"
#include "common/common/thread_annotations.h"
#include "common/http/headers.h"
#include "common/http/utility.h"
#include "common/network/utility.h"
#include "common/protobuf/utility.h"
#include "common/runtime/runtime_impl.h"
#include "common/upstream/upstream_impl.h"
#include "test/common/upstream/utility.h"
#include "test/integration/autonomous_upstream.h"
#include "test/integration/http_integration.h"
#include "test/integration/http_protocol_integration.h"
#include "test/integration/test_host_predicate_config.h"
#include "test/integration/utility.h"
#include "test/mocks/upstream/retry_priority.h"
#include "test/mocks/upstream/retry_priority_factory.h"
#include "test/test_common/environment.h"
#include "test/test_common/network_utility.h"
#include "test/test_common/registry.h"
#include "absl/time/time.h"
#include "gtest/gtest.h"
using testing::HasSubstr;
using testing::Not;
namespace Envoy {
void setDoNotValidateRouteConfig(
envoy::extensions::filters::network::http_connection_manager::v3::HttpConnectionManager& hcm) {
auto* route_config = hcm.mutable_route_config();
route_config->mutable_validate_clusters()->set_value(false);
};
// Tests for DownstreamProtocolIntegrationTest will be run with all protocols
// (H1/H2 downstream) but only H1 upstreams.
//
// This is useful for things which will likely not differ based on upstream
// behavior, for example "how does Envoy handle duplicate content lengths from
// downstream"?
class DownstreamProtocolIntegrationTest : public HttpProtocolIntegrationTest {
protected:
template <class T> void changeHeadersForStopAllTests(T& headers, bool set_buffer_limit) {
headers.addCopy("content_size", std::to_string(count_ * size_));
headers.addCopy("added_size", std::to_string(added_decoded_data_size_));
headers.addCopy("is_first_trigger", "value");
if (set_buffer_limit) {
headers.addCopy("buffer_limit", std::to_string(buffer_limit_));
}
}
void verifyUpStreamRequestAfterStopAllFilter() {
if (downstreamProtocol() == Http::CodecClient::Type::HTTP2) {
// decode-headers-return-stop-all-filter calls addDecodedData in decodeData and
// decodeTrailers. 2 decoded data were added.
EXPECT_EQ(count_ * size_ + added_decoded_data_size_ * 2, upstream_request_->bodyLength());
} else {
EXPECT_EQ(count_ * size_ + added_decoded_data_size_ * 1, upstream_request_->bodyLength());
}
EXPECT_EQ(true, upstream_request_->complete());
}
const int count_ = 70;
const int size_ = 1000;
const int added_decoded_data_size_ = 1;
const int buffer_limit_ = 100;
};
// Tests for ProtocolIntegrationTest will be run with the full mesh of H1/H2
// downstream and H1/H2 upstreams.
using ProtocolIntegrationTest = HttpProtocolIntegrationTest;
TEST_P(ProtocolIntegrationTest, TrailerSupportHttp1) {
config_helper_.addConfigModifier(setEnableDownstreamTrailersHttp1());
config_helper_.addConfigModifier(setEnableUpstreamTrailersHttp1());
testTrailers(10, 20, true, true);
}
TEST_P(ProtocolIntegrationTest, ShutdownWithActiveConnPoolConnections) {
auto response = makeHeaderOnlyRequest(nullptr, 0);
// Shut down the server with active connection pool connections.
test_server_.reset();
checkSimpleRequestSuccess(0U, 0U, response.get());
}
// Change the default route to be restrictive, and send a request to an alternate route.
TEST_P(ProtocolIntegrationTest, RouterNotFound) { testRouterNotFound(); }
TEST_P(ProtocolIntegrationTest, RouterVirtualClusters) { testRouterVirtualClusters(); }
// Change the default route to be restrictive, and send a POST to an alternate route.
TEST_P(DownstreamProtocolIntegrationTest, RouterNotFoundBodyNoBuffer) {
testRouterNotFoundWithBody();
}
// Add a route that uses unknown cluster (expect 404 Not Found).
TEST_P(DownstreamProtocolIntegrationTest, RouterClusterNotFound404) {
config_helper_.addConfigModifier(&setDoNotValidateRouteConfig);
auto host = config_helper_.createVirtualHost("foo.com", "/unknown", "unknown_cluster");
host.mutable_routes(0)->mutable_route()->set_cluster_not_found_response_code(
envoy::config::route::v3::RouteAction::NOT_FOUND);
config_helper_.addVirtualHost(host);
initialize();
BufferingStreamDecoderPtr response = IntegrationUtil::makeSingleRequest(
lookupPort("http"), "GET", "/unknown", "", downstream_protocol_, version_, "foo.com");
ASSERT_TRUE(response->complete());
EXPECT_EQ("404", response->headers().getStatusValue());
}
// Add a route that uses unknown cluster (expect 503 Service Unavailable).
TEST_P(DownstreamProtocolIntegrationTest, RouterClusterNotFound503) {
config_helper_.addConfigModifier(&setDoNotValidateRouteConfig);
auto host = config_helper_.createVirtualHost("foo.com", "/unknown", "unknown_cluster");
host.mutable_routes(0)->mutable_route()->set_cluster_not_found_response_code(
envoy::config::route::v3::RouteAction::SERVICE_UNAVAILABLE);
config_helper_.addVirtualHost(host);
initialize();
BufferingStreamDecoderPtr response = IntegrationUtil::makeSingleRequest(
lookupPort("http"), "GET", "/unknown", "", downstream_protocol_, version_, "foo.com");
ASSERT_TRUE(response->complete());
EXPECT_EQ("503", response->headers().getStatusValue());
}
// Add a route which redirects HTTP to HTTPS, and verify Envoy sends a 301
TEST_P(ProtocolIntegrationTest, RouterRedirect) {
auto host = config_helper_.createVirtualHost("www.redirect.com", "/");
host.set_require_tls(envoy::config::route::v3::VirtualHost::ALL);
config_helper_.addVirtualHost(host);
initialize();
BufferingStreamDecoderPtr response = IntegrationUtil::makeSingleRequest(
lookupPort("http"), "GET", "/foo", "", downstream_protocol_, version_, "www.redirect.com");
ASSERT_TRUE(response->complete());
EXPECT_EQ("301", response->headers().getStatusValue());
EXPECT_EQ("https://www.redirect.com/foo",
response->headers().get(Http::Headers::get().Location)->value().getStringView());
}
TEST_P(ProtocolIntegrationTest, UnknownResponsecode) {
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
Http::TestResponseHeaderMapImpl response_headers{{":status", "600"}};
auto response = sendRequestAndWaitForResponse(default_request_headers_, 0, response_headers, 0);
ASSERT_TRUE(response->complete());
EXPECT_EQ("600", response->headers().getStatusValue());
}
// Add a health check filter and verify correct computation of health based on upstream status.
TEST_P(ProtocolIntegrationTest, ComputedHealthCheck) {
config_helper_.addFilter(R"EOF(
name: health_check
typed_config:
"@type": type.googleapis.com/envoy.config.filter.http.health_check.v2.HealthCheck
pass_through_mode: false
cluster_min_healthy_percentages:
example_cluster_name: { value: 75 }
)EOF");
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeHeaderOnlyRequest(Http::TestRequestHeaderMapImpl{
{":method", "GET"}, {":path", "/healthcheck"}, {":scheme", "http"}, {":authority", "host"}});
response->waitForEndStream();
EXPECT_TRUE(response->complete());
EXPECT_EQ("503", response->headers().getStatusValue());
}
// Add a health check filter and verify correct computation of health based on upstream status.
TEST_P(ProtocolIntegrationTest, ModifyBuffer) {
config_helper_.addFilter(R"EOF(
name: health_check
typed_config:
"@type": type.googleapis.com/envoy.config.filter.http.health_check.v2.HealthCheck
pass_through_mode: false
cluster_min_healthy_percentages:
example_cluster_name: { value: 75 }
)EOF");
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeHeaderOnlyRequest(Http::TestRequestHeaderMapImpl{
{":method", "GET"}, {":path", "/healthcheck"}, {":scheme", "http"}, {":authority", "host"}});
response->waitForEndStream();
EXPECT_TRUE(response->complete());
EXPECT_EQ("503", response->headers().getStatusValue());
}
// Verifies behavior for https://github.com/envoyproxy/envoy/pull/11248
TEST_P(ProtocolIntegrationTest, AddBodyToRequestAndWaitForIt) {
// filters are prepended, so add them in reverse order
config_helper_.addFilter(R"EOF(
name: wait-for-whole-request-and-response-filter
)EOF");
config_helper_.addFilter(R"EOF(
name: add-body-filter
)EOF");
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeHeaderOnlyRequest(default_request_headers_);
waitForNextUpstreamRequest();
EXPECT_EQ("body", upstream_request_->body().toString());
upstream_request_->encodeHeaders(Http::TestResponseHeaderMapImpl{{":status", "200"}}, false);
// encode data, as we have a separate test for the transforming header only response.
upstream_request_->encodeData(128, true);
response->waitForEndStream();
EXPECT_TRUE(upstream_request_->complete());
EXPECT_TRUE(response->complete());
EXPECT_EQ("200", response->headers().getStatusValue());
}
TEST_P(ProtocolIntegrationTest, AddBodyToResponseAndWaitForIt) {
// filters are prepended, so add them in reverse order
config_helper_.addFilter(R"EOF(
name: add-body-filter
)EOF");
config_helper_.addFilter(R"EOF(
name: wait-for-whole-request-and-response-filter
)EOF");
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeRequestWithBody(default_request_headers_, 128);
waitForNextUpstreamRequest();
upstream_request_->encodeHeaders(Http::TestResponseHeaderMapImpl{{":status", "200"}}, true);
response->waitForEndStream();
EXPECT_TRUE(upstream_request_->complete());
EXPECT_TRUE(response->complete());
EXPECT_EQ("200", response->headers().getStatusValue());
EXPECT_EQ("body", response->body());
}
TEST_P(ProtocolIntegrationTest, ContinueHeadersOnlyInjectBodyFilter) {
config_helper_.addFilter(R"EOF(
name: continue-headers-only-inject-body-filter
typed_config:
"@type": type.googleapis.com/google.protobuf.Empty
)EOF");
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
// Send a headers only request.
auto response = codec_client_->makeHeaderOnlyRequest(default_request_headers_);
waitForNextUpstreamRequest();
// Make sure that the body was injected to the request.
EXPECT_TRUE(upstream_request_->complete());
EXPECT_TRUE(upstream_request_->receivedData());
EXPECT_EQ(upstream_request_->body().toString(), "body");
// Send a headers only response.
upstream_request_->encodeHeaders(default_response_headers_, true);
response->waitForEndStream();
// Make sure that the body was injected to the response.
EXPECT_TRUE(response->complete());
EXPECT_EQ(response->body(), "body");
}
TEST_P(ProtocolIntegrationTest, AddEncodedTrailers) {
config_helper_.addFilter(R"EOF(
name: add-trailers-filter
typed_config:
"@type": type.googleapis.com/google.protobuf.Empty
)EOF");
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeRequestWithBody(default_request_headers_, 128);
waitForNextUpstreamRequest();
upstream_request_->encodeHeaders(Http::TestResponseHeaderMapImpl{{":status", "503"}}, false);
upstream_request_->encodeData(128, true);
response->waitForEndStream();
if (upstreamProtocol() == FakeHttpConnection::Type::HTTP2) {
EXPECT_EQ("decode", upstream_request_->trailers()
->get(Http::LowerCaseString("grpc-message"))
->value()
.getStringView());
}
EXPECT_TRUE(response->complete());
EXPECT_EQ("503", response->headers().getStatusValue());
if (downstream_protocol_ == Http::CodecClient::Type::HTTP2) {
EXPECT_EQ("encode", response->trailers()->getGrpcMessageValue());
}
}
// Regression test for https://github.com/envoyproxy/envoy/issues/9873
TEST_P(ProtocolIntegrationTest, ResponseWithHostHeader) {
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeHeaderOnlyRequest(
Http::TestRequestHeaderMapImpl{{":method", "GET"},
{":path", "/test/long/url"},
{":scheme", "http"},
{":authority", "host"}});
waitForNextUpstreamRequest();
upstream_request_->encodeHeaders(
Http::TestResponseHeaderMapImpl{{":status", "200"}, {"host", "host"}}, true);
response->waitForEndStream();
EXPECT_TRUE(response->complete());
EXPECT_EQ("200", response->headers().getStatusValue());
EXPECT_EQ("host",
response->headers().get(Http::LowerCaseString("host"))->value().getStringView());
}
// Regression test for https://github.com/envoyproxy/envoy/issues/10270
TEST_P(ProtocolIntegrationTest, LongHeaderValueWithSpaces) {
// Header with at least 20kb of spaces surrounded by non-whitespace characters to ensure that
// dispatching is split across 2 dispatch calls. This threshold comes from Envoy preferring 16KB
// reads, which the buffer rounds up to about 20KB when allocating slices in
// Buffer::OwnedImpl::reserve().
const std::string long_header_value_with_inner_lws = "v" + std::string(32 * 1024, ' ') + "v";
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeHeaderOnlyRequest(
Http::TestRequestHeaderMapImpl{{":method", "GET"},
{":path", "/test/long/url"},
{":scheme", "http"},
{":authority", "host"},
{"longrequestvalue", long_header_value_with_inner_lws}});
waitForNextUpstreamRequest();
EXPECT_EQ(long_header_value_with_inner_lws, upstream_request_->headers()
.get(Http::LowerCaseString("longrequestvalue"))
->value()
.getStringView());
upstream_request_->encodeHeaders(
Http::TestResponseHeaderMapImpl{{":status", "200"},
{"host", "host"},
{"longresponsevalue", long_header_value_with_inner_lws}},
true);
response->waitForEndStream();
EXPECT_TRUE(response->complete());
EXPECT_EQ("200", response->headers().getStatusValue());
EXPECT_EQ("host",
response->headers().get(Http::LowerCaseString("host"))->value().getStringView());
EXPECT_EQ(
long_header_value_with_inner_lws,
response->headers().get(Http::LowerCaseString("longresponsevalue"))->value().getStringView());
}
TEST_P(ProtocolIntegrationTest, Retry) {
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeRequestWithBody(
Http::TestRequestHeaderMapImpl{{":method", "POST"},
{":path", "/test/long/url"},
{":scheme", "http"},
{":authority", "host"},
{"x-forwarded-for", "10.0.0.1"},
{"x-envoy-retry-on", "5xx"}},
1024);
waitForNextUpstreamRequest();
upstream_request_->encodeHeaders(Http::TestResponseHeaderMapImpl{{":status", "503"}}, false);
if (fake_upstreams_[0]->httpType() == FakeHttpConnection::Type::HTTP1) {
ASSERT_TRUE(fake_upstream_connection_->waitForDisconnect());
ASSERT_TRUE(fake_upstreams_[0]->waitForHttpConnection(*dispatcher_, fake_upstream_connection_));
} else {
ASSERT_TRUE(upstream_request_->waitForReset());
}
waitForNextUpstreamRequest();
upstream_request_->encodeHeaders(default_response_headers_, false);
upstream_request_->encodeData(512, true);
response->waitForEndStream();
EXPECT_TRUE(upstream_request_->complete());
EXPECT_EQ(1024U, upstream_request_->bodyLength());
EXPECT_TRUE(response->complete());
EXPECT_EQ("200", response->headers().getStatusValue());
EXPECT_EQ(512U, response->body().size());
Stats::Store& stats = test_server_->server().stats();
if (upstreamProtocol() == FakeHttpConnection::Type::HTTP2) {
Stats::CounterSharedPtr counter =
TestUtility::findCounter(stats, "cluster.cluster_0.http2.tx_reset");
ASSERT_NE(nullptr, counter);
EXPECT_EQ(1L, counter->value());
} else {
Stats::CounterSharedPtr counter =
TestUtility::findCounter(stats, "cluster.cluster_0.http1.dropped_headers_with_underscores");
EXPECT_NE(nullptr, counter);
}
}
TEST_P(ProtocolIntegrationTest, RetryStreaming) {
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto encoder_decoder =
codec_client_->startRequest(Http::TestRequestHeaderMapImpl{{":method", "POST"},
{":path", "/test/long/url"},
{":scheme", "http"},
{":authority", "host"},
{"x-forwarded-for", "10.0.0.1"},
{"x-envoy-retry-on", "5xx"}});
auto& encoder = encoder_decoder.first;
auto& response = encoder_decoder.second;
// Send some data, but not the entire body.
std::string data(1024, 'a');
Buffer::OwnedImpl send1(data);
encoder.encodeData(send1, false);
ASSERT_TRUE(fake_upstreams_[0]->waitForHttpConnection(*dispatcher_, fake_upstream_connection_));
ASSERT_TRUE(fake_upstream_connection_->waitForNewStream(*dispatcher_, upstream_request_));
// Send back an upstream failure.
upstream_request_->encodeHeaders(Http::TestResponseHeaderMapImpl{{":status", "503"}}, false);
if (fake_upstreams_[0]->httpType() == FakeHttpConnection::Type::HTTP1) {
ASSERT_TRUE(fake_upstream_connection_->waitForDisconnect());
ASSERT_TRUE(fake_upstreams_[0]->waitForHttpConnection(*dispatcher_, fake_upstream_connection_));
} else {
ASSERT_TRUE(upstream_request_->waitForReset());
}
// Wait for a retry. Ensure all data, both before and after the retry, is received.
ASSERT_TRUE(fake_upstream_connection_->waitForNewStream(*dispatcher_, upstream_request_));
// Finish the request.
std::string data2(512, 'b');
Buffer::OwnedImpl send2(data2);
encoder.encodeData(send2, true);
std::string combined_request_data = data + data2;
ASSERT_TRUE(upstream_request_->waitForData(*dispatcher_, combined_request_data));
upstream_request_->encodeHeaders(default_response_headers_, false);
upstream_request_->encodeData(512, true);
response->waitForEndStream();
EXPECT_TRUE(upstream_request_->complete());
EXPECT_EQ(combined_request_data.size(), upstream_request_->bodyLength());
EXPECT_TRUE(response->complete());
EXPECT_EQ("200", response->headers().getStatusValue());
EXPECT_EQ(512U, response->body().size());
}
// Regression test https://github.com/envoyproxy/envoy/issues/11131
// Send complete response headers directing a retry and reset the stream to make
// sure that Envoy cleans up stream state correctly when doing a retry with
// complete response but incomplete request.
TEST_P(ProtocolIntegrationTest, RetryStreamingReset) {
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto encoder_decoder =
codec_client_->startRequest(Http::TestRequestHeaderMapImpl{{":method", "POST"},
{":path", "/test/long/url"},
{":scheme", "http"},
{":authority", "host"},
{"x-forwarded-for", "10.0.0.1"},
{"x-envoy-retry-on", "5xx"}});
auto& encoder = encoder_decoder.first;
auto& response = encoder_decoder.second;
// Send some data, but not the entire body.
std::string data(1024, 'a');
Buffer::OwnedImpl send1(data);
encoder.encodeData(send1, false);
ASSERT_TRUE(fake_upstreams_[0]->waitForHttpConnection(*dispatcher_, fake_upstream_connection_));
ASSERT_TRUE(fake_upstream_connection_->waitForNewStream(*dispatcher_, upstream_request_));
// Send back an upstream failure and end stream. Make sure an immediate reset
// doesn't cause problems. Schedule via the upstream_request_ dispatcher to ensure that the stream
// still exists when encoding the reset stream.
upstream_request_->postToConnectionThread([this]() {
upstream_request_->encodeHeaders(Http::TestResponseHeaderMapImpl{{":status", "503"}}, true);
upstream_request_->encodeResetStream();
});
// Make sure the fake stream is reset.
if (fake_upstreams_[0]->httpType() == FakeHttpConnection::Type::HTTP1) {
ASSERT_TRUE(fake_upstream_connection_->waitForDisconnect());
ASSERT_TRUE(fake_upstreams_[0]->waitForHttpConnection(*dispatcher_, fake_upstream_connection_));
} else {
ASSERT_TRUE(upstream_request_->waitForReset());
}
// Wait for a retry. Ensure all data, both before and after the retry, is received.
ASSERT_TRUE(fake_upstream_connection_->waitForNewStream(*dispatcher_, upstream_request_));
// Finish the request.
std::string data2(512, 'b');
Buffer::OwnedImpl send2(data2);
encoder.encodeData(send2, true);
std::string combined_request_data = data + data2;
ASSERT_TRUE(upstream_request_->waitForData(*dispatcher_, combined_request_data));
upstream_request_->encodeHeaders(default_response_headers_, false);
upstream_request_->encodeData(512, true);
response->waitForEndStream();
EXPECT_TRUE(upstream_request_->complete());
EXPECT_EQ(combined_request_data.size(), upstream_request_->bodyLength());
EXPECT_TRUE(response->complete());
EXPECT_EQ("200", response->headers().getStatusValue());
EXPECT_EQ(512U, response->body().size());
}
TEST_P(ProtocolIntegrationTest, RetryStreamingCancelDueToBufferOverflow) {
config_helper_.addConfigModifier(
[](envoy::extensions::filters::network::http_connection_manager::v3::HttpConnectionManager&
hcm) {
auto* route = hcm.mutable_route_config()->mutable_virtual_hosts(0)->mutable_routes(0);
route->mutable_per_request_buffer_limit_bytes()->set_value(1024);
route->mutable_route()
->mutable_retry_policy()
->mutable_retry_back_off()
->mutable_base_interval()
->MergeFrom(
ProtobufUtil::TimeUtil::MillisecondsToDuration(100000000)); // Effectively infinity.
});
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto encoder_decoder =
codec_client_->startRequest(Http::TestRequestHeaderMapImpl{{":method", "POST"},
{":path", "/test/long/url"},
{":scheme", "http"},
{":authority", "host"},
{"x-forwarded-for", "10.0.0.1"},
{"x-envoy-retry-on", "5xx"}});
auto& encoder = encoder_decoder.first;
auto& response = encoder_decoder.second;
// Send some data, but less than the buffer limit, and not end-stream
std::string data(64, 'a');
Buffer::OwnedImpl send1(data);
encoder.encodeData(send1, false);
ASSERT_TRUE(fake_upstreams_[0]->waitForHttpConnection(*dispatcher_, fake_upstream_connection_));
ASSERT_TRUE(fake_upstream_connection_->waitForNewStream(*dispatcher_, upstream_request_));
// Send back an upstream failure.
upstream_request_->encodeHeaders(Http::TestResponseHeaderMapImpl{{":status", "503"}}, false);
if (fake_upstreams_[0]->httpType() == FakeHttpConnection::Type::HTTP1) {
ASSERT_TRUE(fake_upstream_connection_->waitForDisconnect());
} else {
ASSERT_TRUE(upstream_request_->waitForReset());
}
// Overflow the request buffer limit. Because the retry base interval is infinity, no
// request will be in progress. This will cause the request to be aborted and an error
// to be returned to the client.
std::string data2(2048, 'b');
Buffer::OwnedImpl send2(data2);
encoder.encodeData(send2, false);
response->waitForEndStream();
EXPECT_TRUE(response->complete());
EXPECT_EQ("507", response->headers().getStatusValue());
test_server_->waitForCounterEq("cluster.cluster_0.retry_or_shadow_abandoned", 1);
}
// Tests that the x-envoy-attempt-count header is properly set on the upstream request and the
// downstream response, and updated after the request is retried.
TEST_P(DownstreamProtocolIntegrationTest, RetryAttemptCountHeader) {
auto host = config_helper_.createVirtualHost("host", "/test_retry");
host.set_include_request_attempt_count(true);
host.set_include_attempt_count_in_response(true);
config_helper_.addVirtualHost(host);
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeRequestWithBody(
Http::TestRequestHeaderMapImpl{{":method", "POST"},
{":path", "/test_retry"},
{":scheme", "http"},
{":authority", "host"},
{"x-forwarded-for", "10.0.0.1"},
{"x-envoy-retry-on", "5xx"}},
1024);
waitForNextUpstreamRequest();
upstream_request_->encodeHeaders(Http::TestResponseHeaderMapImpl{{":status", "503"}}, false);
EXPECT_EQ(atoi(std::string(upstream_request_->headers().getEnvoyAttemptCountValue()).c_str()), 1);
if (fake_upstreams_[0]->httpType() == FakeHttpConnection::Type::HTTP1) {
ASSERT_TRUE(fake_upstream_connection_->waitForDisconnect());
ASSERT_TRUE(fake_upstreams_[0]->waitForHttpConnection(*dispatcher_, fake_upstream_connection_));
} else {
ASSERT_TRUE(upstream_request_->waitForReset());
}
waitForNextUpstreamRequest();
EXPECT_EQ(atoi(std::string(upstream_request_->headers().getEnvoyAttemptCountValue()).c_str()), 2);
upstream_request_->encodeHeaders(default_response_headers_, false);
upstream_request_->encodeData(512, true);
response->waitForEndStream();
EXPECT_TRUE(upstream_request_->complete());
EXPECT_EQ(1024U, upstream_request_->bodyLength());
EXPECT_TRUE(response->complete());
EXPECT_EQ("200", response->headers().getStatusValue());
EXPECT_EQ(512U, response->body().size());
EXPECT_EQ(2, atoi(std::string(response->headers().getEnvoyAttemptCountValue()).c_str()));
}
// Verifies that a retry priority can be configured and affect the host selected during retries.
// The retry priority will always target P1, which would otherwise never be hit due to P0 being
// healthy.
TEST_P(DownstreamProtocolIntegrationTest, RetryPriority) {
const Upstream::HealthyLoad healthy_priority_load({0u, 100u});
const Upstream::DegradedLoad degraded_priority_load({0u, 100u});
NiceMock<Upstream::MockRetryPriority> retry_priority(healthy_priority_load,
degraded_priority_load);
Upstream::MockRetryPriorityFactory factory(retry_priority);
Registry::InjectFactory<Upstream::RetryPriorityFactory> inject_factory(factory);
// Add route with custom retry policy
auto host = config_helper_.createVirtualHost("host", "/test_retry");
host.set_include_request_attempt_count(true);
auto retry_policy = host.mutable_routes(0)->mutable_route()->mutable_retry_policy();
retry_policy->mutable_retry_priority()->set_name(factory.name());
config_helper_.addVirtualHost(host);
// We want to work with a cluster with two hosts.
config_helper_.addConfigModifier([this](envoy::config::bootstrap::v3::Bootstrap& bootstrap) {
auto* cluster = bootstrap.mutable_static_resources()->mutable_clusters(0);
auto* load_assignment = cluster->mutable_load_assignment();
load_assignment->clear_endpoints();
for (int i = 0; i < 2; ++i) {
auto locality = load_assignment->add_endpoints();
locality->set_priority(i);
locality->mutable_locality()->set_region("region");
locality->mutable_locality()->set_zone("zone");
locality->mutable_locality()->set_sub_zone("sub_zone" + std::to_string(i));
locality->add_lb_endpoints()->mutable_endpoint()->MergeFrom(
ConfigHelper::buildEndpoint(Network::Test::getLoopbackAddressString(version_)));
}
});
fake_upstreams_count_ = 2;
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeRequestWithBody(
Http::TestRequestHeaderMapImpl{{":method", "POST"},
{":path", "/test_retry"},
{":scheme", "http"},
{":authority", "host"},
{"x-forwarded-for", "10.0.0.1"},
{"x-envoy-retry-on", "5xx"}},
1024);
// Note how we're expecting each upstream request to hit the same upstream.
waitForNextUpstreamRequest(0);
upstream_request_->encodeHeaders(Http::TestResponseHeaderMapImpl{{":status", "503"}}, false);
if (fake_upstreams_[0]->httpType() == FakeHttpConnection::Type::HTTP1) {
ASSERT_TRUE(fake_upstream_connection_->waitForDisconnect());
ASSERT_TRUE(fake_upstreams_[1]->waitForHttpConnection(*dispatcher_, fake_upstream_connection_));
} else {
ASSERT_TRUE(upstream_request_->waitForReset());
}
waitForNextUpstreamRequest(1);
upstream_request_->encodeHeaders(default_response_headers_, false);
upstream_request_->encodeData(512, true);
response->waitForEndStream();
EXPECT_TRUE(upstream_request_->complete());
EXPECT_EQ(1024U, upstream_request_->bodyLength());
EXPECT_TRUE(response->complete());
EXPECT_EQ("200", response->headers().getStatusValue());
EXPECT_EQ(512U, response->body().size());
}
//
// Verifies that a retry host filter can be configured and affect the host selected during retries.
// The predicate will keep track of the first host attempted, and attempt to route all requests to
// the same host. With a total of two upstream hosts, this should result in us continuously sending
// requests to the same host.
TEST_P(DownstreamProtocolIntegrationTest, RetryHostPredicateFilter) {
TestHostPredicateFactory predicate_factory;
Registry::InjectFactory<Upstream::RetryHostPredicateFactory> inject_factory(predicate_factory);
// Add route with custom retry policy
auto host = config_helper_.createVirtualHost("host", "/test_retry");
host.set_include_request_attempt_count(true);
auto retry_policy = host.mutable_routes(0)->mutable_route()->mutable_retry_policy();
retry_policy->add_retry_host_predicate()->set_name(predicate_factory.name());
config_helper_.addVirtualHost(host);
// We want to work with a cluster with two hosts.
config_helper_.addConfigModifier([this](envoy::config::bootstrap::v3::Bootstrap& bootstrap) {
bootstrap.mutable_static_resources()
->mutable_clusters(0)
->mutable_load_assignment()
->mutable_endpoints(0)
->add_lb_endpoints()
->mutable_endpoint()
->MergeFrom(ConfigHelper::buildEndpoint(Network::Test::getLoopbackAddressString(version_)));
});
fake_upstreams_count_ = 2;
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeRequestWithBody(
Http::TestRequestHeaderMapImpl{{":method", "POST"},
{":path", "/test_retry"},
{":scheme", "http"},
{":authority", "host"},
{"x-forwarded-for", "10.0.0.1"},
{"x-envoy-retry-on", "5xx"}},
1024);
// Note how we're expecting each upstream request to hit the same upstream.
auto upstream_idx = waitForNextUpstreamRequest({0, 1});
ASSERT_TRUE(upstream_idx.has_value());
upstream_request_->encodeHeaders(Http::TestResponseHeaderMapImpl{{":status", "503"}}, false);
if (fake_upstreams_[*upstream_idx]->httpType() == FakeHttpConnection::Type::HTTP1) {
ASSERT_TRUE(fake_upstream_connection_->waitForDisconnect());
ASSERT_TRUE(fake_upstreams_[*upstream_idx]->waitForHttpConnection(*dispatcher_,
fake_upstream_connection_));
} else {
ASSERT_TRUE(upstream_request_->waitForReset());
}
waitForNextUpstreamRequest(*upstream_idx);
upstream_request_->encodeHeaders(default_response_headers_, false);
upstream_request_->encodeData(512, true);
response->waitForEndStream();
EXPECT_TRUE(upstream_request_->complete());
EXPECT_EQ(1024U, upstream_request_->bodyLength());
EXPECT_TRUE(response->complete());
EXPECT_EQ("200", response->headers().getStatusValue());
EXPECT_EQ(512U, response->body().size());
}
// Very similar set-up to testRetry but with a 16k request the request will not
// be buffered and the 503 will be returned to the user.
TEST_P(ProtocolIntegrationTest, RetryHittingBufferLimit) {
config_helper_.setBufferLimits(1024, 1024); // Set buffer limits upstream and downstream.
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeRequestWithBody(
Http::TestRequestHeaderMapImpl{{":method", "POST"},
{":path", "/test/long/url"},
{":scheme", "http"},
{":authority", "host"},
{"x-forwarded-for", "10.0.0.1"},
{"x-envoy-retry-on", "5xx"}},
1024 * 65);
waitForNextUpstreamRequest();
upstream_request_->encodeHeaders(Http::TestResponseHeaderMapImpl{{":status", "503"}}, true);
response->waitForEndStream();
EXPECT_TRUE(upstream_request_->complete());
EXPECT_EQ(66560U, upstream_request_->bodyLength());
EXPECT_TRUE(response->complete());
EXPECT_EQ("503", response->headers().getStatusValue());
}
// Very similar set-up to RetryHittingBufferLimits but using the route specific cap.
TEST_P(ProtocolIntegrationTest, RetryHittingRouteLimits) {
auto host = config_helper_.createVirtualHost("nobody.com", "/");
host.mutable_per_request_buffer_limit_bytes()->set_value(0);
config_helper_.addVirtualHost(host);
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeRequestWithBody(
Http::TestRequestHeaderMapImpl{{":method", "POST"},
{":path", "/"},
{":scheme", "http"},
{":authority", "nobody.com"},
{"x-forwarded-for", "10.0.0.1"},
{"x-envoy-retry-on", "5xx"}},
1);
waitForNextUpstreamRequest();
upstream_request_->encodeHeaders(Http::TestResponseHeaderMapImpl{{":status", "503"}}, true);
response->waitForEndStream();
EXPECT_TRUE(upstream_request_->complete());
EXPECT_EQ(1U, upstream_request_->bodyLength());
EXPECT_TRUE(response->complete());
EXPECT_EQ("503", response->headers().getStatusValue());
}
// Test hitting the decoder buffer filter with too many request bytes to buffer. Ensure the
// connection manager sends a 413.
TEST_P(DownstreamProtocolIntegrationTest, HittingDecoderFilterLimit) {
config_helper_.addFilter("{ name: encoder-decoder-buffer-filter, typed_config: { \"@type\": "
"type.googleapis.com/google.protobuf.Empty } }");
config_helper_.setBufferLimits(1024, 1024);
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeRequestWithBody(
Http::TestRequestHeaderMapImpl{{":method", "POST"},
{":path", "/dynamo/url"},
{":scheme", "http"},
{":authority", "host"},
{"x-forwarded-for", "10.0.0.1"},
{"x-envoy-retry-on", "5xx"}},
1024 * 65);
response->waitForEndStream();
// With HTTP/1 there's a possible race where if the connection backs up early,
// the 413-and-connection-close may be sent while the body is still being
// sent, resulting in a write error and the connection being closed before the
// response is read.
if (downstream_protocol_ == Http::CodecClient::Type::HTTP2) {
ASSERT_TRUE(response->complete());
}
if (response->complete()) {
EXPECT_EQ("413", response->headers().getStatusValue());
}
}
// Test hitting the encoder buffer filter with too many response bytes to buffer. Given the request
// headers are sent on early, the stream/connection will be reset.
TEST_P(ProtocolIntegrationTest, HittingEncoderFilterLimit) {
config_helper_.addConfigModifier(
[&](envoy::extensions::filters::network::http_connection_manager::v3::HttpConnectionManager&
hcm) -> void {
auto* route_config = hcm.mutable_route_config();
auto* virtual_host = route_config->mutable_virtual_hosts(0);
auto* header = virtual_host->mutable_response_headers_to_add()->Add()->mutable_header();
header->set_key("foo");
header->set_value("bar");
});
useAccessLog();
config_helper_.addFilter("{ name: encoder-decoder-buffer-filter, typed_config: { \"@type\": "
"type.googleapis.com/google.protobuf.Empty } }");
config_helper_.setBufferLimits(1024, 1024);
initialize();
// Send the request.
codec_client_ = makeHttpConnection(lookupPort("http"));
auto encoder_decoder = codec_client_->startRequest(default_request_headers_);
auto downstream_request = &encoder_decoder.first;
auto response = std::move(encoder_decoder.second);
Buffer::OwnedImpl data("HTTP body content goes here");
codec_client_->sendData(*downstream_request, data, true);
waitForNextUpstreamRequest();
// Send the response headers.
upstream_request_->encodeHeaders(default_response_headers_, false);
// Now send an overly large response body. At some point, too much data will
// be buffered, the stream will be reset, and the connection will disconnect.
upstream_request_->encodeData(1024 * 65, false);
if (upstreamProtocol() == FakeHttpConnection::Type::HTTP1) {
ASSERT_TRUE(fake_upstream_connection_->waitForDisconnect());
} else {
ASSERT_TRUE(upstream_request_->waitForReset());
ASSERT_TRUE(fake_upstream_connection_->close());
ASSERT_TRUE(fake_upstream_connection_->waitForDisconnect());
}
response->waitForEndStream();
EXPECT_TRUE(response->complete());
EXPECT_EQ("500", response->headers().getStatusValue());
// Regression test all sendLocalReply paths add route-requested headers.
auto foo = Http::LowerCaseString("foo");
ASSERT_TRUE(response->headers().get(foo) != nullptr);
EXPECT_EQ("bar", response->headers().get(foo)->value().getStringView());
// Regression test https://github.com/envoyproxy/envoy/issues/9881 by making
// sure this path does standard HCM header transformations.
EXPECT_TRUE(response->headers().Date() != nullptr);
EXPECT_THAT(waitForAccessLog(access_log_name_), HasSubstr("500"));
test_server_->waitForCounterEq("http.config_test.downstream_rq_5xx", 1);
}
TEST_P(ProtocolIntegrationTest, EnvoyHandling100Continue) { testEnvoyHandling100Continue(); }
TEST_P(ProtocolIntegrationTest, EnvoyHandlingDuplicate100Continue) {
testEnvoyHandling100Continue(true);
}
// 100-continue before the request completes.
TEST_P(ProtocolIntegrationTest, EnvoyProxyingEarly100Continue) { testEnvoyProxying1xx(true); }
// Multiple 1xx before the request completes.
TEST_P(ProtocolIntegrationTest, EnvoyProxyingEarlyMultiple1xx) {
testEnvoyProxying1xx(true, false, true);
}
// 100-continue after the request completes.
TEST_P(ProtocolIntegrationTest, EnvoyProxyingLate100Continue) { testEnvoyProxying1xx(false); }
// Multiple 1xx after the request completes.
TEST_P(ProtocolIntegrationTest, EnvoyProxyingLateMultiple1xx) {
testEnvoyProxying1xx(false, false, true);
}
TEST_P(ProtocolIntegrationTest, TwoRequests) { testTwoRequests(); }
TEST_P(ProtocolIntegrationTest, TwoRequestsWithForcedBackup) { testTwoRequests(true); }
TEST_P(ProtocolIntegrationTest, BasicMaxStreamDuration) { testMaxStreamDuration(); }
TEST_P(ProtocolIntegrationTest, MaxStreamDurationWithRetryPolicy) {
testMaxStreamDurationWithRetry(false);
}
TEST_P(ProtocolIntegrationTest, MaxStreamDurationWithRetryPolicyWhenRetryUpstreamDisconnection) {
testMaxStreamDurationWithRetry(true);
}
// Verify that headers with underscores in their names are dropped from client requests
// but remain in upstream responses.
TEST_P(ProtocolIntegrationTest, HeadersWithUnderscoresDropped) {
config_helper_.addConfigModifier(
[&](envoy::extensions::filters::network::http_connection_manager::v3::HttpConnectionManager&
hcm) -> void {
hcm.mutable_common_http_protocol_options()->set_headers_with_underscores_action(
envoy::config::core::v3::HttpProtocolOptions::DROP_HEADER);
});
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeHeaderOnlyRequest(
Http::TestRequestHeaderMapImpl{{":method", "GET"},
{":path", "/test/long/url"},
{":scheme", "http"},
{":authority", "host"},
{"foo_bar", "baz"}});
waitForNextUpstreamRequest();
EXPECT_THAT(upstream_request_->headers(), Not(HeaderHasValueRef("foo_bar", "baz")));
upstream_request_->encodeHeaders(
Http::TestResponseHeaderMapImpl{{":status", "200"}, {"bar_baz", "fooz"}}, true);
response->waitForEndStream();
EXPECT_TRUE(response->complete());
EXPECT_EQ("200", response->headers().getStatusValue());
EXPECT_THAT(response->headers(), HeaderHasValueRef("bar_baz", "fooz"));
Stats::Store& stats = test_server_->server().stats();
std::string stat_name = (downstreamProtocol() == Http::CodecClient::Type::HTTP1)
? "http1.dropped_headers_with_underscores"
: "http2.dropped_headers_with_underscores";
EXPECT_EQ(1L, TestUtility::findCounter(stats, stat_name)->value());
}
// Verify that by default headers with underscores in their names remain in both requests and
// responses when allowed in configuration.
TEST_P(ProtocolIntegrationTest, HeadersWithUnderscoresRemainByDefault) {
initialize();
codec_client_ = makeHttpConnection(lookupPort("http"));
auto response = codec_client_->makeHeaderOnlyRequest(
Http::TestRequestHeaderMapImpl{{":method", "GET"},
{":path", "/test/long/url"},
{":scheme", "http"},
{":authority", "host"},
{"foo_bar", "baz"}});
waitForNextUpstreamRequest();
EXPECT_THAT(upstream_request_->headers(), HeaderHasValueRef("foo_bar", "baz"));
upstream_request_->encodeHeaders(
Http::TestResponseHeaderMapImpl{{":status", "200"}, {"bar_baz", "fooz"}}, true);
response->waitForEndStream();
EXPECT_TRUE(response->complete());
EXPECT_EQ("200", response->headers().getStatusValue());
EXPECT_THAT(response->headers(), HeaderHasValueRef("bar_baz", "fooz"));
}