From 82228fd115ad2424204fe92ed4aebdc21fa63b72 Mon Sep 17 00:00:00 2001 From: William Petit Date: Sat, 1 Jul 2023 13:43:18 -0600 Subject: [PATCH] feat: allow customization of proxy transport configuration --- go.mod | 8 ++-- go.sum | 19 ++-------- internal/config/proxy_server.go | 66 +++++++++++++++++++++++++++++++-- internal/proxy/server.go | 47 +++++++++++++++++++++++ 4 files changed, 116 insertions(+), 24 deletions(-) diff --git a/go.mod b/go.mod index d579702..2873747 100644 --- a/go.mod +++ b/go.mod @@ -3,13 +3,14 @@ module forge.cadoles.com/cadoles/bouncer go 1.20 require ( - forge.cadoles.com/Cadoles/go-proxy v0.0.0-20230512083245-e2dc3e1a0333 + forge.cadoles.com/Cadoles/go-proxy v0.0.0-20230701194111-c6b3d482cca6 github.com/Masterminds/sprig/v3 v3.2.3 github.com/btcsuite/btcd/btcutil v1.1.3 github.com/go-chi/chi/v5 v5.0.8 github.com/jedib0t/go-pretty/v6 v6.4.6 github.com/mitchellh/mapstructure v1.4.1 github.com/ory/dockertest/v3 v3.10.0 + github.com/prometheus/client_golang v1.16.0 github.com/qri-io/jsonschema v0.2.1 github.com/redis/go-redis/v9 v9.0.4 ) @@ -32,11 +33,10 @@ require ( github.com/docker/go-units v0.4.0 // indirect github.com/gogo/protobuf v1.3.2 // indirect github.com/golang/protobuf v1.5.3 // indirect - github.com/google/go-cmp v0.5.9 // indirect github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 // indirect github.com/huandu/xstrings v1.3.3 // indirect github.com/imdario/mergo v0.3.12 // indirect - github.com/kr/pretty v0.3.1 // indirect + github.com/kr/text v0.2.0 // indirect github.com/mattn/go-runewidth v0.0.13 // indirect github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect github.com/mitchellh/copystructure v1.0.0 // indirect @@ -45,7 +45,6 @@ require ( github.com/opencontainers/go-digest v1.0.0 // indirect github.com/opencontainers/image-spec v1.0.2 // indirect github.com/opencontainers/runc v1.1.5 // indirect - github.com/prometheus/client_golang v1.16.0 // indirect github.com/prometheus/client_model v0.3.0 // indirect github.com/prometheus/common v0.42.0 // indirect github.com/prometheus/procfs v0.10.1 // indirect @@ -60,7 +59,6 @@ require ( github.com/xeipuuv/gojsonschema v1.2.0 // indirect google.golang.org/genproto v0.0.0-20220314164441-57ef72a4c106 // indirect google.golang.org/protobuf v1.30.0 // indirect - gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect gopkg.in/yaml.v2 v2.4.0 // indirect ) diff --git a/go.sum b/go.sum index 08de0cb..48b868d 100644 --- a/go.sum +++ b/go.sum @@ -49,8 +49,8 @@ cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohl cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs= cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0= dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU= -forge.cadoles.com/Cadoles/go-proxy v0.0.0-20230512083245-e2dc3e1a0333 h1:dAajr9wX8WuFPrwjbKNXRmbF+4AaAT7bUj66G7gdZ+c= -forge.cadoles.com/Cadoles/go-proxy v0.0.0-20230512083245-e2dc3e1a0333/go.mod h1:o8ZK5v/3J1dRmklFVn1l6WHAyQ3LgegyHjRIT8KLAFw= +forge.cadoles.com/Cadoles/go-proxy v0.0.0-20230701194111-c6b3d482cca6 h1:FTk0ZoaV5N8Tkps5Da5RrDMZZXSHZIuD67Hy1Y4fsos= +forge.cadoles.com/Cadoles/go-proxy v0.0.0-20230701194111-c6b3d482cca6/go.mod h1:o8ZK5v/3J1dRmklFVn1l6WHAyQ3LgegyHjRIT8KLAFw= github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 h1:UQHMgLO+TxOElx5B5HZ4hJQsoJ/PvUvKRhJHDQXO8P8= github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E= github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= @@ -230,7 +230,6 @@ github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI= github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk= github.com/golang/protobuf v1.5.1/go.mod h1:DopwsBzvsk0Fs44TXzsVbJyPhcCPeIwnvohx4u74HPM= -github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw= github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY= github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg= github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY= @@ -252,7 +251,6 @@ github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/ github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38= -github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY= github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs= github.com/google/martian/v3 v3.0.0/go.mod h1:y5Zk1BBys9G+gd6Jrk0W3cC1+ELVxBWuIGO+w/tUAp0= github.com/google/martian/v3 v3.1.0/go.mod h1:y5Zk1BBys9G+gd6Jrk0W3cC1+ELVxBWuIGO+w/tUAp0= @@ -311,9 +309,7 @@ github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+o github.com/kkdai/bstream v0.0.0-20161212061736-f391b8402d23/go.mod h1:J+Gs4SYgM6CZQHDETBtE9HaSEkGmuNXF86RwHhHUvq4= github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo= github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI= -github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0= -github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk= -github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk= +github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE= github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ= github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI= github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY= @@ -386,7 +382,6 @@ github.com/opencontainers/selinux v1.10.0/go.mod h1:2i0OySw99QjzBBQByd1Gr9gSjvuh github.com/ory/dockertest/v3 v3.10.0 h1:4K3z2VMe8Woe++invjaTB7VRyQXQy5UY+loujO4aNE4= github.com/ory/dockertest/v3 v3.10.0/go.mod h1:nr57ZbRWMqfsdGdFNLHz5jjNdDb7VVFnzAeW1n5N1Lg= github.com/oxtoacart/bpool v0.0.0-20190530202638-03653db5a59c/go.mod h1:X07ZCGwUbLaax7L0S3Tw4hpejzu63ZrrQiUe6W0hcy0= -github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA= github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4= @@ -413,8 +408,6 @@ github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY= github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc= github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ= github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4= -github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc= -github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs= github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ= github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog= github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM= @@ -607,8 +600,8 @@ golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJ golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= -golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o= golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sync v0.2.0 h1:PUR+T4wwASmuSTYdKjYHI5TD22Wy5ogLU5qZCOLxBrI= golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= golang.org/x/sys v0.0.0-20181128092732-4ed8d59d0b35/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= @@ -680,8 +673,6 @@ golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= -golang.org/x/sys v0.7.0 h1:3jlCCIQZPdOYu1h8BkNvLz8Kgwtae2cagcG/VamtZRU= -golang.org/x/sys v0.7.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU= golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo= @@ -908,14 +899,12 @@ google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGj google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c= google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw= google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc= -google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ= google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc= google.golang.org/protobuf v1.30.0 h1:kPPoIgf3TsEvrm0PFe15JQ+570QVxYzEvvHqChK+cng= google.golang.org/protobuf v1.30.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk= -gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q= gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI= gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys= gopkg.in/go-playground/assert.v1 v1.2.1 h1:xoYuJVE7KT85PYWrN730RguIQO0ePzVRfFMXadIrXTM= diff --git a/internal/config/proxy_server.go b/internal/config/proxy_server.go index f0b9e32..8af31ae 100644 --- a/internal/config/proxy_server.go +++ b/internal/config/proxy_server.go @@ -1,13 +1,71 @@ package config +import "time" + type ProxyServerConfig struct { - HTTP HTTPConfig `yaml:"http"` - Metrics MetricsConfig `yaml:"metrics"` + HTTP HTTPConfig `yaml:"http"` + Metrics MetricsConfig `yaml:"metrics"` + Transport TransportConfig `yaml:"transport"` + Dial DialConfig `yaml:"dial"` +} + +// See https://pkg.go.dev/net/http#Transport +type TransportConfig struct { + ForceAttemptHTTP2 InterpolatedBool `yaml:"forceAttemptHTTP2"` + MaxIdleConns InterpolatedInt `yaml:"maxIdleConns"` + MaxIdleConnsPerHost InterpolatedInt `yaml:"maxIdleConnsPerHost"` + MaxConnsPerHost InterpolatedInt `yaml:"maxConnsPerHost"` + IdleConnTimeout *InterpolatedDuration `yaml:"idleConnTimeout"` + TLSHandshakeTimeout *InterpolatedDuration `yaml:"tlsHandshakeTimeout"` + ExpectContinueTimeout *InterpolatedDuration `yaml:"expectContinueTimeout"` + DisableKeepAlives InterpolatedBool `yaml:"disableKeepAlives"` + DisableCompression InterpolatedBool `yaml:"disableCompression"` + ResponseHeaderTimeout *InterpolatedDuration `yaml:"responseHeaderTimeout"` + WriteBufferSize InterpolatedInt `yaml:"writeBufferSize"` + ReadBufferSize InterpolatedInt `yaml:"readBufferSize"` + MaxResponseHeaderBytes InterpolatedInt `yaml:"maxResponseHeaderBytes"` } func NewDefaultProxyServerConfig() ProxyServerConfig { return ProxyServerConfig{ - HTTP: NewHTTPConfig("0.0.0.0", 8080), - Metrics: NewDefaultMetricsConfig(), + HTTP: NewHTTPConfig("0.0.0.0", 8080), + Metrics: NewDefaultMetricsConfig(), + Transport: NewDefaultTransportConfig(), + Dial: NewDefaultDialConfig(), + } +} + +// See https://pkg.go.dev/net#Dialer +type DialConfig struct { + Timeout *InterpolatedDuration `yaml:"timeout"` + KeepAlive *InterpolatedDuration `yaml:"keepAlive"` + FallbackDelay *InterpolatedDuration `yaml:"fallbackDelay"` + DualStack InterpolatedBool `yaml:"dualStack"` +} + +func NewDefaultDialConfig() DialConfig { + return DialConfig{ + Timeout: NewInterpolatedDuration(30 * time.Second), + KeepAlive: NewInterpolatedDuration(30 * time.Second), + FallbackDelay: NewInterpolatedDuration(300 * time.Millisecond), + DualStack: true, + } +} + +func NewDefaultTransportConfig() TransportConfig { + return TransportConfig{ + ForceAttemptHTTP2: true, + MaxIdleConns: 100, + MaxIdleConnsPerHost: 100, + MaxConnsPerHost: 100, + IdleConnTimeout: NewInterpolatedDuration(90 * time.Second), + TLSHandshakeTimeout: NewInterpolatedDuration(10 * time.Second), + ExpectContinueTimeout: NewInterpolatedDuration(1 * time.Second), + ResponseHeaderTimeout: NewInterpolatedDuration(10 * time.Second), + DisableCompression: false, + DisableKeepAlives: false, + ReadBufferSize: 4096, + WriteBufferSize: 4096, + MaxResponseHeaderBytes: 0, } } diff --git a/internal/proxy/server.go b/internal/proxy/server.go index ee5adbe..a2823ec 100644 --- a/internal/proxy/server.go +++ b/internal/proxy/server.go @@ -6,6 +6,9 @@ import ( "log" "net" "net/http" + "net/http/httputil" + "net/url" + "time" "forge.cadoles.com/Cadoles/go-proxy" bouncerChi "forge.cadoles.com/cadoles/bouncer/internal/chi" @@ -115,6 +118,7 @@ func (s *Server) run(parentCtx context.Context, addrs chan net.Addr, errs chan e proxy.WithResponseTransformers( director.ResponseTransformer(), ), + proxy.WithReverseProxyFactory(s.createReverseProxy), ) r.Handle("/*", handler) @@ -127,6 +131,49 @@ func (s *Server) run(parentCtx context.Context, addrs chan net.Addr, errs chan e logger.Info(ctx, "http server exiting") } +func (s *Server) createReverseProxy(ctx context.Context, target *url.URL) *httputil.ReverseProxy { + reverseProxy := httputil.NewSingleHostReverseProxy(target) + + dialConfig := s.serverConfig.Dial + + dialer := &net.Dialer{ + Timeout: time.Duration(*dialConfig.Timeout), + KeepAlive: time.Duration(*dialConfig.KeepAlive), + FallbackDelay: time.Duration(*dialConfig.FallbackDelay), + DualStack: bool(dialConfig.DualStack), + } + + transportConfig := s.serverConfig.Transport + + reverseProxy.Transport = &http.Transport{ + Proxy: http.ProxyFromEnvironment, + DialContext: dialer.DialContext, + ForceAttemptHTTP2: bool(transportConfig.ForceAttemptHTTP2), + MaxIdleConns: int(transportConfig.MaxIdleConns), + MaxIdleConnsPerHost: int(transportConfig.MaxIdleConnsPerHost), + MaxConnsPerHost: int(transportConfig.MaxConnsPerHost), + IdleConnTimeout: time.Duration(*transportConfig.IdleConnTimeout), + TLSHandshakeTimeout: time.Duration(*transportConfig.TLSHandshakeTimeout), + ExpectContinueTimeout: time.Duration(*transportConfig.ExpectContinueTimeout), + DisableKeepAlives: bool(transportConfig.DisableKeepAlives), + DisableCompression: bool(transportConfig.DisableCompression), + ResponseHeaderTimeout: time.Duration(*transportConfig.ResponseHeaderTimeout), + WriteBufferSize: int(transportConfig.WriteBufferSize), + ReadBufferSize: int(transportConfig.ReadBufferSize), + MaxResponseHeaderBytes: int64(transportConfig.MaxResponseHeaderBytes), + } + + reverseProxy.ErrorHandler = s.errorHandler + + return reverseProxy +} + +func (s *Server) errorHandler(w http.ResponseWriter, r *http.Request, err error) { + logger.Error(r.Context(), "proxy error", logger.E(errors.WithStack(err))) + + http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError) +} + func NewServer(funcs ...OptionFunc) *Server { opt := defaultOption() for _, fn := range funcs {