Checklist:

• [*] I've included steps to reproduce the bug.
• [*] I've included the version of argo rollouts.
• [*] I've included the version of the gateway API plugin
• [* ] I've included the name and version of the gateway API provider I am using
• [*] I've included my Rollout Spec (anonymized if needed)

Describe the bug

To Reproduce

apiVersion: argoproj.io/v1alpha1
kind: Rollout
metadata:
 annotations:
 argocd.argoproj.io/sync-wave: '1'
 labels:
 gitops/apps.git: demo
 name: demo
 namespace: demo
spec:
 replicas: 1
 revisionHistoryLimit: 0
 selector:
 matchLabels:
 app: demo
 strategy:
 canary:
 analysis:
 args:
 - name: service
 value: demo
 - name: namespace
 valueFrom:
 fieldRef:
 fieldPath: metadata.namespace
 startingStep: 0
 templates:
 - templateName: istio-success-rate
 antiAffinity:
 requiredDuringSchedulingIgnoredDuringExecution: {}
 canaryService: demo-canary
 maxSurge: 50%
 maxUnavailable: 0
 stableService: demo
 steps:
 - setCanaryScale:
 replicas: 1
 - setHeaderRoute:
 match:
 - headerName: cookie
 headerValue:
 regex: company_id=.*(666|111)$
 name: route-by-cookie
 - pause:
 duration: 30m
 trafficRouting:
 managedRoutes:
 - name: route-by-cookie
 plugins:
 argoproj-labs/gatewayAPI:
 httpRoute: demo
 namespace: demo
 template:
 metadata:
 annotations:
 configmap-md5: ''
 descheduler.alpha.kubernetes.io/evictable: 'true'
 labels:
 app: demo
 spec:
 containers:
 - env:
 - name: NAMESPACE
 value: demo
 - name: APP
 value: demo
 - name: CLUSTER_TYPE
 value: test
 image: >-
 registry-vpc.cn-hangzhou.aliyuncs.com/gitops-tools/rollouts-demo:yellow
 imagePullPolicy: Always
 name: rollouts-demo
 ports:
 - containerPort: 8080
 protocol: TCP
 enableServiceLinks: false
 serviceAccountName: demo

Version

v1.7.2 argo-rollouts
v0.4.0 rollouts-plugin-trafficrouter-gatewayapi

Logs
time="2024-12-19T12:17:15Z" level=info msg="Found 1 TrafficRouting Reconcilers" namespace=demo rollout=demo
time="2024-12-19T12:17:15Z" level=info msg="Reconciling TrafficRouting with type 'GatewayAPI'" namespace=demo rollout=demo
2024年12月19日T12:17:15.863Z [DEBUG] plugin.gatewayAPI: time="2024-12-19T12:17:15Z" level=info msg="[RemoveManagedRoutes] plugin "argoproj-labs/gatewayAPI" controls HTTPRoutes: [demo]" plugin=trafficrouter
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: panic: runtime error: slice bounds out of range [:2:1]
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI:
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: goroutine 40 [running]:
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: slices.Delete...
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: /opt/hostedtoolcache/go/1.22.6/x64/src/slices/slices.go:219
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: github.com/argoproj-labs/rollouts-plugin-trafficrouter-gatewayapi/pkg/plugin.removeManagedHTTPRouteEntry(0xc000747380, {0xc0003bedc0, 0x1, 0x4}, {0xc00036f060, 0xf}, {0xc00036f63c, 0x4})
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: /home/runner/work/rollouts-plugin-trafficrouter-gatewayapi/rollouts-plugin-trafficrouter-gatewayapi/pkg/plugin/httproute.go:393 +0x4f1
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: github.com/argoproj-labs/rollouts-plugin-trafficrouter-gatewayapi/pkg/plugin.(*RpcPlugin).removeHTTPManagedRoutes(0xc00046a500, {0xc00075e040, 0x1, 0x0?}, 0xc0005bda20)
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: /home/runner/work/rollouts-plugin-trafficrouter-gatewayapi/rollouts-plugin-trafficrouter-gatewayapi/pkg/plugin/httproute.go:296 +0x597
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: github.com/argoproj-labs/rollouts-plugin-trafficrouter-gatewayapi/pkg/plugin.(*RpcPlugin).RemoveManagedRoutes.func1({{0xc00036f63c?, 0xc0004b39d0?}, 0x4?})
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: /home/runner/work/rollouts-plugin-trafficrouter-gatewayapi/rollouts-plugin-trafficrouter-gatewayapi/pkg/plugin/plugin.go:153 +0x65
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: github.com/argoproj-labs/rollouts-plugin-trafficrouter-gatewayapi/pkg/plugin.forEachGatewayAPIRoute[...]({0xc0007279b0?, 0xc0006876d0?, 0x2?}, 0xc0005716e0?)
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: /home/runner/work/rollouts-plugin-trafficrouter-gatewayapi/rollouts-plugin-trafficrouter-gatewayapi/pkg/plugin/plugin.go:276 +0x56
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: github.com/argoproj-labs/rollouts-plugin-trafficrouter-gatewayapi/pkg/plugin.(*RpcPlugin).RemoveManagedRoutes(0xc00046a500, 0xc000711108)
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: /home/runner/work/rollouts-plugin-trafficrouter-gatewayapi/rollouts-plugin-trafficrouter-gatewayapi/pkg/plugin/plugin.go:148 +0x1a5
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: github.com/argoproj/argo-rollouts/rollout/trafficrouting/plugin/rpc.(*TrafficRouterRPCServer).RemoveManagedRoutes(0x1?, {0x1875500?, 0xc000711108?}, 0xc00075e090)
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: /home/runner/go/pkg/mod/github.com/argoproj/argo-rollouts@v1.6.6/rollout/trafficrouting/plugin/rpc/rpc.go:255 +0x3f
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: reflect.Value.call({0xc00053c5a0?, 0xc0004f0030?, 0x13?}, {0x1c4e6db, 0x4}, {0xc0004ebef8, 0x3, 0x3?})
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: /opt/hostedtoolcache/go/1.22.6/x64/src/reflect/value.go:596 +0xca6
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: reflect.Value.Call({0xc00053c5a0?, 0xc0004f0030?, 0x0?}, {0xc000505ef8?, 0x0?, 0x0?})
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: /opt/hostedtoolcache/go/1.22.6/x64/src/reflect/value.go:380 +0xb9
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: net/rpc.(*service).call(0xc0002fc0c0, 0xc0002fc080, 0xc0002240a0, 0xc0002240d0, 0xc0004ee200, 0xc0002da0c0, {0x198bb40?, 0xc0002e46c0?, 0x0?}, {0x19ee700, ...}, ...)
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: /opt/hostedtoolcache/go/1.22.6/x64/src/net/rpc/server.go:381 +0x20e
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: created by net/rpc.(*Server).ServeCodec in goroutine 38
2024年12月19日T12:17:15.888Z [DEBUG] plugin.gatewayAPI: /opt/hostedtoolcache/go/1.22.6/x64/src/net/rpc/server.go:478 +0x3d7
2024年12月19日T12:17:15.890Z [ERROR] plugin: plugin process exited: plugin=/home/argo-rollouts/plugin-bin/argoproj-labs/gatewayAPI id=146609 error="exit status 2"
time="2024-12-19T12:17:15Z" level=error msg="roCtx.reconcile err failed to remove managed routes via plugin: RemoveManagedRoutes rpc call error: unexpected EOF" generation=2 namespace=demo resourceVersion=30188502 rollout=demo
time="2024-12-19T12:17:15Z" level=info msg="Reconciliation completed" generation=2 namespace=demo resourceVersion=30188502 rollout=demo time_ms=87.60934099999999
time="2024-12-19T12:17:15Z" level=error msg="rollout syncHandler error: failed to remove managed routes via plugin: RemoveManagedRoutes rpc call error: unexpected EOF" namespace=demo rollout=demo
time="2024-12-19T12:17:15Z" level=info msg="rollout syncHandler queue retries: 19 : key "demo/demo"" namespace=demo rollout=demo
time="2024-12-19T12:17:15Z" level=error msg="failed to remove managed routes via plugin: RemoveManagedRoutes rpc call error: unexpected EOF" error=""

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