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envoyconfig: preserve case of HTTP headers when using HTTP/1 (#3956)

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Caleb Doxsey 2023-02-10 16:29:10 -07:00 • committed by GitHub
parent f2adeadaca
commit e66c26c9ad
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4 changed files with 71 additions and 4 deletions
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26
config/envoyconfig/protocols.go
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@ -4,6 +4,7 @@ import (
"context"
envoy_config_core_v3 "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
envoy_extensions_http_header_formatters_preserve_case_v3 "github.com/envoyproxy/go-control-plane/envoy/extensions/http/header_formatters/preserve_case/v3"
envoy_extensions_upstreams_http_v3 "github.com/envoyproxy/go-control-plane/envoy/extensions/upstreams/http/v3"
"google.golang.org/protobuf/types/known/anypb"
"google.golang.org/protobuf/types/known/wrapperspb"
@ -28,6 +29,18 @@ const (
initialConnectionWindowSizeLimit uint32 = 1 * 1024 * 1024
)
var http1ProtocolOptions = &envoy_config_core_v3.Http1ProtocolOptions{
// fix for #3935, preserve case of HTTP headers for applications that are case-sensitive
HeaderKeyFormat: &envoy_config_core_v3.Http1ProtocolOptions_HeaderKeyFormat{
HeaderFormat: &envoy_config_core_v3.Http1ProtocolOptions_HeaderKeyFormat_StatefulFormatter{
StatefulFormatter: &envoy_config_core_v3.TypedExtensionConfig{
Name: "preserve_case",
TypedConfig: marshalAny(&envoy_extensions_http_header_formatters_preserve_case_v3.PreserveCaseFormatterConfig{}),
},
},
},
}
var http2ProtocolOptions = &envoy_config_core_v3.Http2ProtocolOptions{
AllowConnect: true,
MaxConcurrentStreams: wrapperspb.UInt32(maxConcurrentStreams),
@ -35,13 +48,19 @@ var http2ProtocolOptions = &envoy_config_core_v3.Http2ProtocolOptions{
InitialConnectionWindowSize: wrapperspb.UInt32(initialConnectionWindowSizeLimit),
}
func buildTypedExtensionProtocolOptions(endpoints []Endpoint, upstreamProtocol upstreamProtocolConfig) map[string]*anypb.Any {
func buildTypedExtensionProtocolOptions(
endpoints []Endpoint,
upstreamProtocol upstreamProtocolConfig,
) map[string]*anypb.Any {
return map[string]*anypb.Any{
"envoy.extensions.upstreams.http.v3.HttpProtocolOptions": marshalAny(buildUpstreamProtocolOptions(endpoints, upstreamProtocol)),
}
}
func buildUpstreamProtocolOptions(endpoints []Endpoint, upstreamProtocol upstreamProtocolConfig) *envoy_extensions_upstreams_http_v3.HttpProtocolOptions {
func buildUpstreamProtocolOptions(
endpoints []Endpoint,
upstreamProtocol upstreamProtocolConfig,
) *envoy_extensions_upstreams_http_v3.HttpProtocolOptions {
switch upstreamProtocol {
case upstreamProtocolHTTP2:
// when explicitly configured, force HTTP/2
@ -66,6 +85,7 @@ func buildUpstreamProtocolOptions(endpoints []Endpoint, upstreamProtocol upstrea
return &envoy_extensions_upstreams_http_v3.HttpProtocolOptions{
UpstreamProtocolOptions: &envoy_extensions_upstreams_http_v3.HttpProtocolOptions_AutoConfig{
AutoConfig: &envoy_extensions_upstreams_http_v3.HttpProtocolOptions_AutoHttpConfig{
HttpProtocolOptions: http1ProtocolOptions,
Http2ProtocolOptions: http2ProtocolOptions,
},
},
@ -78,7 +98,7 @@ func buildUpstreamProtocolOptions(endpoints []Endpoint, upstreamProtocol upstrea
UpstreamProtocolOptions: &envoy_extensions_upstreams_http_v3.HttpProtocolOptions_ExplicitHttpConfig_{
ExplicitHttpConfig: &envoy_extensions_upstreams_http_v3.HttpProtocolOptions_ExplicitHttpConfig{
ProtocolConfig: &envoy_extensions_upstreams_http_v3.HttpProtocolOptions_ExplicitHttpConfig_HttpProtocolOptions{
HttpProtocolOptions: &envoy_config_core_v3.Http1ProtocolOptions{},
HttpProtocolOptions: http1ProtocolOptions,
},
},
},