api/rpc/v1/service.twirp.go
// Code generated by protoc-gen-twirp v8.1.3, DO NOT EDIT.
// source: v1/service.proto
package v1
import (
bytes "bytes"
context "context"
json "encoding/json"
errors "errors"
fmt "fmt"
io "io"
http "net/http"
url "net/url"
path "path"
strconv "strconv"
strings "strings"
twirp "github.com/twitchtv/twirp"
ctxsetters "github.com/twitchtv/twirp/ctxsetters"
protojson "google.golang.org/protobuf/encoding/protojson"
proto "google.golang.org/protobuf/proto"
)
// Version compatibility assertion.
// If the constant is not defined in the package, that likely means
// the package needs to be updated to work with this generated code.
// See https://twitchtv.github.io/twirp/docs/version_matrix.html
const _ = twirp.TwirpPackageMinVersion_8_1_0
// ========================
// GreeterService Interface
// ========================
type GreeterService interface {
Hello(context.Context, *HelloRequest) (*HelloResponse, error)
Sign(context.Context, *SignRequest) (*SignResponse, error)
}
// ==============================
// GreeterService Protobuf Client
// ==============================
type greeterServiceProtobufClient struct {
client HTTPClient
urls [2]string
interceptor twirp.Interceptor
opts twirp.ClientOptions
}
// NewGreeterServiceProtobufClient creates a Protobuf client that implements the GreeterService interface.
// It communicates using Protobuf and can be configured with a custom HTTPClient.
func NewGreeterServiceProtobufClient(baseURL string, client HTTPClient, opts ...twirp.ClientOption) GreeterService {
if c, ok := client.(*http.Client); ok {
client = withoutRedirects(c)
}
clientOpts := twirp.ClientOptions{}
for _, o := range opts {
o(&clientOpts)
}
// Using ReadOpt allows backwards and forwards compatibility with new options in the future
literalURLs := false
_ = clientOpts.ReadOpt("literalURLs", &literalURLs)
var pathPrefix string
if ok := clientOpts.ReadOpt("pathPrefix", &pathPrefix); !ok {
pathPrefix = "/twirp" // default prefix
}
// Build method URLs: <baseURL>[<prefix>]/<package>.<Service>/<Method>
serviceURL := sanitizeBaseURL(baseURL)
serviceURL += baseServicePath(pathPrefix, "api.rpc.v1", "GreeterService")
urls := [2]string{
serviceURL + "Hello",
serviceURL + "Sign",
}
return &greeterServiceProtobufClient{
client: client,
urls: urls,
interceptor: twirp.ChainInterceptors(clientOpts.Interceptors...),
opts: clientOpts,
}
}
func (c *greeterServiceProtobufClient) Hello(ctx context.Context, in *HelloRequest) (*HelloResponse, error) {
ctx = ctxsetters.WithPackageName(ctx, "api.rpc.v1")
ctx = ctxsetters.WithServiceName(ctx, "GreeterService")
ctx = ctxsetters.WithMethodName(ctx, "Hello")
caller := c.callHello
if c.interceptor != nil {
caller = func(ctx context.Context, req *HelloRequest) (*HelloResponse, error) {
resp, err := c.interceptor(
func(ctx context.Context, req interface{}) (interface{}, error) {
typedReq, ok := req.(*HelloRequest)
if !ok {
return nil, twirp.InternalError("failed type assertion req.(*HelloRequest) when calling interceptor")
}
return c.callHello(ctx, typedReq)
},
)(ctx, req)
if resp != nil {
typedResp, ok := resp.(*HelloResponse)
if !ok {
return nil, twirp.InternalError("failed type assertion resp.(*HelloResponse) when calling interceptor")
}
return typedResp, err
}
return nil, err
}
}
return caller(ctx, in)
}
func (c *greeterServiceProtobufClient) callHello(ctx context.Context, in *HelloRequest) (*HelloResponse, error) {
out := new(HelloResponse)
ctx, err := doProtobufRequest(ctx, c.client, c.opts.Hooks, c.urls[0], in, out)
if err != nil {
twerr, ok := err.(twirp.Error)
if !ok {
twerr = twirp.InternalErrorWith(err)
}
callClientError(ctx, c.opts.Hooks, twerr)
return nil, err
}
callClientResponseReceived(ctx, c.opts.Hooks)
return out, nil
}
func (c *greeterServiceProtobufClient) Sign(ctx context.Context, in *SignRequest) (*SignResponse, error) {
ctx = ctxsetters.WithPackageName(ctx, "api.rpc.v1")
ctx = ctxsetters.WithServiceName(ctx, "GreeterService")
ctx = ctxsetters.WithMethodName(ctx, "Sign")
caller := c.callSign
if c.interceptor != nil {
caller = func(ctx context.Context, req *SignRequest) (*SignResponse, error) {
resp, err := c.interceptor(
func(ctx context.Context, req interface{}) (interface{}, error) {
typedReq, ok := req.(*SignRequest)
if !ok {
return nil, twirp.InternalError("failed type assertion req.(*SignRequest) when calling interceptor")
}
return c.callSign(ctx, typedReq)
},
)(ctx, req)
if resp != nil {
typedResp, ok := resp.(*SignResponse)
if !ok {
return nil, twirp.InternalError("failed type assertion resp.(*SignResponse) when calling interceptor")
}
return typedResp, err
}
return nil, err
}
}
return caller(ctx, in)
}
func (c *greeterServiceProtobufClient) callSign(ctx context.Context, in *SignRequest) (*SignResponse, error) {
out := new(SignResponse)
ctx, err := doProtobufRequest(ctx, c.client, c.opts.Hooks, c.urls[1], in, out)
if err != nil {
twerr, ok := err.(twirp.Error)
if !ok {
twerr = twirp.InternalErrorWith(err)
}
callClientError(ctx, c.opts.Hooks, twerr)
return nil, err
}
callClientResponseReceived(ctx, c.opts.Hooks)
return out, nil
}
// ==========================
// GreeterService JSON Client
// ==========================
type greeterServiceJSONClient struct {
client HTTPClient
urls [2]string
interceptor twirp.Interceptor
opts twirp.ClientOptions
}
// NewGreeterServiceJSONClient creates a JSON client that implements the GreeterService interface.
// It communicates using JSON and can be configured with a custom HTTPClient.
func NewGreeterServiceJSONClient(baseURL string, client HTTPClient, opts ...twirp.ClientOption) GreeterService {
if c, ok := client.(*http.Client); ok {
client = withoutRedirects(c)
}
clientOpts := twirp.ClientOptions{}
for _, o := range opts {
o(&clientOpts)
}
// Using ReadOpt allows backwards and forwards compatibility with new options in the future
literalURLs := false
_ = clientOpts.ReadOpt("literalURLs", &literalURLs)
var pathPrefix string
if ok := clientOpts.ReadOpt("pathPrefix", &pathPrefix); !ok {
pathPrefix = "/twirp" // default prefix
}
// Build method URLs: <baseURL>[<prefix>]/<package>.<Service>/<Method>
serviceURL := sanitizeBaseURL(baseURL)
serviceURL += baseServicePath(pathPrefix, "api.rpc.v1", "GreeterService")
urls := [2]string{
serviceURL + "Hello",
serviceURL + "Sign",
}
return &greeterServiceJSONClient{
client: client,
urls: urls,
interceptor: twirp.ChainInterceptors(clientOpts.Interceptors...),
opts: clientOpts,
}
}
func (c *greeterServiceJSONClient) Hello(ctx context.Context, in *HelloRequest) (*HelloResponse, error) {
ctx = ctxsetters.WithPackageName(ctx, "api.rpc.v1")
ctx = ctxsetters.WithServiceName(ctx, "GreeterService")
ctx = ctxsetters.WithMethodName(ctx, "Hello")
caller := c.callHello
if c.interceptor != nil {
caller = func(ctx context.Context, req *HelloRequest) (*HelloResponse, error) {
resp, err := c.interceptor(
func(ctx context.Context, req interface{}) (interface{}, error) {
typedReq, ok := req.(*HelloRequest)
if !ok {
return nil, twirp.InternalError("failed type assertion req.(*HelloRequest) when calling interceptor")
}
return c.callHello(ctx, typedReq)
},
)(ctx, req)
if resp != nil {
typedResp, ok := resp.(*HelloResponse)
if !ok {
return nil, twirp.InternalError("failed type assertion resp.(*HelloResponse) when calling interceptor")
}
return typedResp, err
}
return nil, err
}
}
return caller(ctx, in)
}
func (c *greeterServiceJSONClient) callHello(ctx context.Context, in *HelloRequest) (*HelloResponse, error) {
out := new(HelloResponse)
ctx, err := doJSONRequest(ctx, c.client, c.opts.Hooks, c.urls[0], in, out)
if err != nil {
twerr, ok := err.(twirp.Error)
if !ok {
twerr = twirp.InternalErrorWith(err)
}
callClientError(ctx, c.opts.Hooks, twerr)
return nil, err
}
callClientResponseReceived(ctx, c.opts.Hooks)
return out, nil
}
func (c *greeterServiceJSONClient) Sign(ctx context.Context, in *SignRequest) (*SignResponse, error) {
ctx = ctxsetters.WithPackageName(ctx, "api.rpc.v1")
ctx = ctxsetters.WithServiceName(ctx, "GreeterService")
ctx = ctxsetters.WithMethodName(ctx, "Sign")
caller := c.callSign
if c.interceptor != nil {
caller = func(ctx context.Context, req *SignRequest) (*SignResponse, error) {
resp, err := c.interceptor(
func(ctx context.Context, req interface{}) (interface{}, error) {
typedReq, ok := req.(*SignRequest)
if !ok {
return nil, twirp.InternalError("failed type assertion req.(*SignRequest) when calling interceptor")
}
return c.callSign(ctx, typedReq)
},
)(ctx, req)
if resp != nil {
typedResp, ok := resp.(*SignResponse)
if !ok {
return nil, twirp.InternalError("failed type assertion resp.(*SignResponse) when calling interceptor")
}
return typedResp, err
}
return nil, err
}
}
return caller(ctx, in)
}
func (c *greeterServiceJSONClient) callSign(ctx context.Context, in *SignRequest) (*SignResponse, error) {
out := new(SignResponse)
ctx, err := doJSONRequest(ctx, c.client, c.opts.Hooks, c.urls[1], in, out)
if err != nil {
twerr, ok := err.(twirp.Error)
if !ok {
twerr = twirp.InternalErrorWith(err)
}
callClientError(ctx, c.opts.Hooks, twerr)
return nil, err
}
callClientResponseReceived(ctx, c.opts.Hooks)
return out, nil
}
// =============================
// GreeterService Server Handler
// =============================
type greeterServiceServer struct {
GreeterService
interceptor twirp.Interceptor
hooks *twirp.ServerHooks
pathPrefix string // prefix for routing
jsonSkipDefaults bool // do not include unpopulated fields (default values) in the response
jsonCamelCase bool // JSON fields are serialized as lowerCamelCase rather than keeping the original proto names
}
// NewGreeterServiceServer builds a TwirpServer that can be used as an http.Handler to handle
// HTTP requests that are routed to the right method in the provided svc implementation.
// The opts are twirp.ServerOption modifiers, for example twirp.WithServerHooks(hooks).
func NewGreeterServiceServer(svc GreeterService, opts ...interface{}) TwirpServer {
serverOpts := newServerOpts(opts)
// Using ReadOpt allows backwards and forwards compatibility with new options in the future
jsonSkipDefaults := false
_ = serverOpts.ReadOpt("jsonSkipDefaults", &jsonSkipDefaults)
jsonCamelCase := false
_ = serverOpts.ReadOpt("jsonCamelCase", &jsonCamelCase)
var pathPrefix string
if ok := serverOpts.ReadOpt("pathPrefix", &pathPrefix); !ok {
pathPrefix = "/twirp" // default prefix
}
return &greeterServiceServer{
GreeterService: svc,
hooks: serverOpts.Hooks,
interceptor: twirp.ChainInterceptors(serverOpts.Interceptors...),
pathPrefix: pathPrefix,
jsonSkipDefaults: jsonSkipDefaults,
jsonCamelCase: jsonCamelCase,
}
}
// writeError writes an HTTP response with a valid Twirp error format, and triggers hooks.
// If err is not a twirp.Error, it will get wrapped with twirp.InternalErrorWith(err)
func (s *greeterServiceServer) writeError(ctx context.Context, resp http.ResponseWriter, err error) {
writeError(ctx, resp, err, s.hooks)
}
// handleRequestBodyError is used to handle error when the twirp server cannot read request
func (s *greeterServiceServer) handleRequestBodyError(ctx context.Context, resp http.ResponseWriter, msg string, err error) {
if context.Canceled == ctx.Err() {
s.writeError(ctx, resp, twirp.NewError(twirp.Canceled, "failed to read request: context canceled"))
return
}
if context.DeadlineExceeded == ctx.Err() {
s.writeError(ctx, resp, twirp.NewError(twirp.DeadlineExceeded, "failed to read request: deadline exceeded"))
return
}
s.writeError(ctx, resp, twirp.WrapError(malformedRequestError(msg), err))
}
// GreeterServicePathPrefix is a convenience constant that may identify URL paths.
// Should be used with caution, it only matches routes generated by Twirp Go clients,
// with the default "/twirp" prefix and default CamelCase service and method names.
// More info: https://twitchtv.github.io/twirp/docs/routing.html
const GreeterServicePathPrefix = "/twirp/api.rpc.v1.GreeterService/"
func (s *greeterServiceServer) ServeHTTP(resp http.ResponseWriter, req *http.Request) {
ctx := req.Context()
ctx = ctxsetters.WithPackageName(ctx, "api.rpc.v1")
ctx = ctxsetters.WithServiceName(ctx, "GreeterService")
ctx = ctxsetters.WithResponseWriter(ctx, resp)
var err error
ctx, err = callRequestReceived(ctx, s.hooks)
if err != nil {
s.writeError(ctx, resp, err)
return
}
if req.Method != "POST" {
msg := fmt.Sprintf("unsupported method %q (only POST is allowed)", req.Method)
s.writeError(ctx, resp, badRouteError(msg, req.Method, req.URL.Path))
return
}
// Verify path format: [<prefix>]/<package>.<Service>/<Method>
prefix, pkgService, method := parseTwirpPath(req.URL.Path)
if pkgService != "api.rpc.v1.GreeterService" {
msg := fmt.Sprintf("no handler for path %q", req.URL.Path)
s.writeError(ctx, resp, badRouteError(msg, req.Method, req.URL.Path))
return
}
if prefix != s.pathPrefix {
msg := fmt.Sprintf("invalid path prefix %q, expected %q, on path %q", prefix, s.pathPrefix, req.URL.Path)
s.writeError(ctx, resp, badRouteError(msg, req.Method, req.URL.Path))
return
}
switch method {
case "Hello":
s.serveHello(ctx, resp, req)
return
case "Sign":
s.serveSign(ctx, resp, req)
return
default:
msg := fmt.Sprintf("no handler for path %q", req.URL.Path)
s.writeError(ctx, resp, badRouteError(msg, req.Method, req.URL.Path))
return
}
}
func (s *greeterServiceServer) serveHello(ctx context.Context, resp http.ResponseWriter, req *http.Request) {
header := req.Header.Get("Content-Type")
i := strings.Index(header, ";")
if i == -1 {
i = len(header)
}
switch strings.TrimSpace(strings.ToLower(header[:i])) {
case "application/json":
s.serveHelloJSON(ctx, resp, req)
case "application/protobuf":
s.serveHelloProtobuf(ctx, resp, req)
default:
msg := fmt.Sprintf("unexpected Content-Type: %q", req.Header.Get("Content-Type"))
twerr := badRouteError(msg, req.Method, req.URL.Path)
s.writeError(ctx, resp, twerr)
}
}
func (s *greeterServiceServer) serveHelloJSON(ctx context.Context, resp http.ResponseWriter, req *http.Request) {
var err error
ctx = ctxsetters.WithMethodName(ctx, "Hello")
ctx, err = callRequestRouted(ctx, s.hooks)
if err != nil {
s.writeError(ctx, resp, err)
return
}
d := json.NewDecoder(req.Body)
rawReqBody := json.RawMessage{}
if err := d.Decode(&rawReqBody); err != nil {
s.handleRequestBodyError(ctx, resp, "the json request could not be decoded", err)
return
}
reqContent := new(HelloRequest)
unmarshaler := protojson.UnmarshalOptions{DiscardUnknown: true}
if err = unmarshaler.Unmarshal(rawReqBody, reqContent); err != nil {
s.handleRequestBodyError(ctx, resp, "the json request could not be decoded", err)
return
}
handler := s.GreeterService.Hello
if s.interceptor != nil {
handler = func(ctx context.Context, req *HelloRequest) (*HelloResponse, error) {
resp, err := s.interceptor(
func(ctx context.Context, req interface{}) (interface{}, error) {
typedReq, ok := req.(*HelloRequest)
if !ok {
return nil, twirp.InternalError("failed type assertion req.(*HelloRequest) when calling interceptor")
}
return s.GreeterService.Hello(ctx, typedReq)
},
)(ctx, req)
if resp != nil {
typedResp, ok := resp.(*HelloResponse)
if !ok {
return nil, twirp.InternalError("failed type assertion resp.(*HelloResponse) when calling interceptor")
}
return typedResp, err
}
return nil, err
}
}
// Call service method
var respContent *HelloResponse
func() {
defer ensurePanicResponses(ctx, resp, s.hooks)
respContent, err = handler(ctx, reqContent)
}()
if err != nil {
s.writeError(ctx, resp, err)
return
}
if respContent == nil {
s.writeError(ctx, resp, twirp.InternalError("received a nil *HelloResponse and nil error while calling Hello. nil responses are not supported"))
return
}
ctx = callResponsePrepared(ctx, s.hooks)
marshaler := &protojson.MarshalOptions{UseProtoNames: !s.jsonCamelCase, EmitUnpopulated: !s.jsonSkipDefaults}
respBytes, err := marshaler.Marshal(respContent)
if err != nil {
s.writeError(ctx, resp, wrapInternal(err, "failed to marshal json response"))
return
}
ctx = ctxsetters.WithStatusCode(ctx, http.StatusOK)
resp.Header().Set("Content-Type", "application/json")
resp.Header().Set("Content-Length", strconv.Itoa(len(respBytes)))
resp.WriteHeader(http.StatusOK)
if n, err := resp.Write(respBytes); err != nil {
msg := fmt.Sprintf("failed to write response, %d of %d bytes written: %s", n, len(respBytes), err.Error())
twerr := twirp.NewError(twirp.Unknown, msg)
ctx = callError(ctx, s.hooks, twerr)
}
callResponseSent(ctx, s.hooks)
}
func (s *greeterServiceServer) serveHelloProtobuf(ctx context.Context, resp http.ResponseWriter, req *http.Request) {
var err error
ctx = ctxsetters.WithMethodName(ctx, "Hello")
ctx, err = callRequestRouted(ctx, s.hooks)
if err != nil {
s.writeError(ctx, resp, err)
return
}
buf, err := io.ReadAll(req.Body)
if err != nil {
s.handleRequestBodyError(ctx, resp, "failed to read request body", err)
return
}
reqContent := new(HelloRequest)
if err = proto.Unmarshal(buf, reqContent); err != nil {
s.writeError(ctx, resp, malformedRequestError("the protobuf request could not be decoded"))
return
}
handler := s.GreeterService.Hello
if s.interceptor != nil {
handler = func(ctx context.Context, req *HelloRequest) (*HelloResponse, error) {
resp, err := s.interceptor(
func(ctx context.Context, req interface{}) (interface{}, error) {
typedReq, ok := req.(*HelloRequest)
if !ok {
return nil, twirp.InternalError("failed type assertion req.(*HelloRequest) when calling interceptor")
}
return s.GreeterService.Hello(ctx, typedReq)
},
)(ctx, req)
if resp != nil {
typedResp, ok := resp.(*HelloResponse)
if !ok {
return nil, twirp.InternalError("failed type assertion resp.(*HelloResponse) when calling interceptor")
}
return typedResp, err
}
return nil, err
}
}
// Call service method
var respContent *HelloResponse
func() {
defer ensurePanicResponses(ctx, resp, s.hooks)
respContent, err = handler(ctx, reqContent)
}()
if err != nil {
s.writeError(ctx, resp, err)
return
}
if respContent == nil {
s.writeError(ctx, resp, twirp.InternalError("received a nil *HelloResponse and nil error while calling Hello. nil responses are not supported"))
return
}
ctx = callResponsePrepared(ctx, s.hooks)
respBytes, err := proto.Marshal(respContent)
if err != nil {
s.writeError(ctx, resp, wrapInternal(err, "failed to marshal proto response"))
return
}
ctx = ctxsetters.WithStatusCode(ctx, http.StatusOK)
resp.Header().Set("Content-Type", "application/protobuf")
resp.Header().Set("Content-Length", strconv.Itoa(len(respBytes)))
resp.WriteHeader(http.StatusOK)
if n, err := resp.Write(respBytes); err != nil {
msg := fmt.Sprintf("failed to write response, %d of %d bytes written: %s", n, len(respBytes), err.Error())
twerr := twirp.NewError(twirp.Unknown, msg)
ctx = callError(ctx, s.hooks, twerr)
}
callResponseSent(ctx, s.hooks)
}
func (s *greeterServiceServer) serveSign(ctx context.Context, resp http.ResponseWriter, req *http.Request) {
header := req.Header.Get("Content-Type")
i := strings.Index(header, ";")
if i == -1 {
i = len(header)
}
switch strings.TrimSpace(strings.ToLower(header[:i])) {
case "application/json":
s.serveSignJSON(ctx, resp, req)
case "application/protobuf":
s.serveSignProtobuf(ctx, resp, req)
default:
msg := fmt.Sprintf("unexpected Content-Type: %q", req.Header.Get("Content-Type"))
twerr := badRouteError(msg, req.Method, req.URL.Path)
s.writeError(ctx, resp, twerr)
}
}
func (s *greeterServiceServer) serveSignJSON(ctx context.Context, resp http.ResponseWriter, req *http.Request) {
var err error
ctx = ctxsetters.WithMethodName(ctx, "Sign")
ctx, err = callRequestRouted(ctx, s.hooks)
if err != nil {
s.writeError(ctx, resp, err)
return
}
d := json.NewDecoder(req.Body)
rawReqBody := json.RawMessage{}
if err := d.Decode(&rawReqBody); err != nil {
s.handleRequestBodyError(ctx, resp, "the json request could not be decoded", err)
return
}
reqContent := new(SignRequest)
unmarshaler := protojson.UnmarshalOptions{DiscardUnknown: true}
if err = unmarshaler.Unmarshal(rawReqBody, reqContent); err != nil {
s.handleRequestBodyError(ctx, resp, "the json request could not be decoded", err)
return
}
handler := s.GreeterService.Sign
if s.interceptor != nil {
handler = func(ctx context.Context, req *SignRequest) (*SignResponse, error) {
resp, err := s.interceptor(
func(ctx context.Context, req interface{}) (interface{}, error) {
typedReq, ok := req.(*SignRequest)
if !ok {
return nil, twirp.InternalError("failed type assertion req.(*SignRequest) when calling interceptor")
}
return s.GreeterService.Sign(ctx, typedReq)
},
)(ctx, req)
if resp != nil {
typedResp, ok := resp.(*SignResponse)
if !ok {
return nil, twirp.InternalError("failed type assertion resp.(*SignResponse) when calling interceptor")
}
return typedResp, err
}
return nil, err
}
}
// Call service method
var respContent *SignResponse
func() {
defer ensurePanicResponses(ctx, resp, s.hooks)
respContent, err = handler(ctx, reqContent)
}()
if err != nil {
s.writeError(ctx, resp, err)
return
}
if respContent == nil {
s.writeError(ctx, resp, twirp.InternalError("received a nil *SignResponse and nil error while calling Sign. nil responses are not supported"))
return
}
ctx = callResponsePrepared(ctx, s.hooks)
marshaler := &protojson.MarshalOptions{UseProtoNames: !s.jsonCamelCase, EmitUnpopulated: !s.jsonSkipDefaults}
respBytes, err := marshaler.Marshal(respContent)
if err != nil {
s.writeError(ctx, resp, wrapInternal(err, "failed to marshal json response"))
return
}
ctx = ctxsetters.WithStatusCode(ctx, http.StatusOK)
resp.Header().Set("Content-Type", "application/json")
resp.Header().Set("Content-Length", strconv.Itoa(len(respBytes)))
resp.WriteHeader(http.StatusOK)
if n, err := resp.Write(respBytes); err != nil {
msg := fmt.Sprintf("failed to write response, %d of %d bytes written: %s", n, len(respBytes), err.Error())
twerr := twirp.NewError(twirp.Unknown, msg)
ctx = callError(ctx, s.hooks, twerr)
}
callResponseSent(ctx, s.hooks)
}
func (s *greeterServiceServer) serveSignProtobuf(ctx context.Context, resp http.ResponseWriter, req *http.Request) {
var err error
ctx = ctxsetters.WithMethodName(ctx, "Sign")
ctx, err = callRequestRouted(ctx, s.hooks)
if err != nil {
s.writeError(ctx, resp, err)
return
}
buf, err := io.ReadAll(req.Body)
if err != nil {
s.handleRequestBodyError(ctx, resp, "failed to read request body", err)
return
}
reqContent := new(SignRequest)
if err = proto.Unmarshal(buf, reqContent); err != nil {
s.writeError(ctx, resp, malformedRequestError("the protobuf request could not be decoded"))
return
}
handler := s.GreeterService.Sign
if s.interceptor != nil {
handler = func(ctx context.Context, req *SignRequest) (*SignResponse, error) {
resp, err := s.interceptor(
func(ctx context.Context, req interface{}) (interface{}, error) {
typedReq, ok := req.(*SignRequest)
if !ok {
return nil, twirp.InternalError("failed type assertion req.(*SignRequest) when calling interceptor")
}
return s.GreeterService.Sign(ctx, typedReq)
},
)(ctx, req)
if resp != nil {
typedResp, ok := resp.(*SignResponse)
if !ok {
return nil, twirp.InternalError("failed type assertion resp.(*SignResponse) when calling interceptor")
}
return typedResp, err
}
return nil, err
}
}
// Call service method
var respContent *SignResponse
func() {
defer ensurePanicResponses(ctx, resp, s.hooks)
respContent, err = handler(ctx, reqContent)
}()
if err != nil {
s.writeError(ctx, resp, err)
return
}
if respContent == nil {
s.writeError(ctx, resp, twirp.InternalError("received a nil *SignResponse and nil error while calling Sign. nil responses are not supported"))
return
}
ctx = callResponsePrepared(ctx, s.hooks)
respBytes, err := proto.Marshal(respContent)
if err != nil {
s.writeError(ctx, resp, wrapInternal(err, "failed to marshal proto response"))
return
}
ctx = ctxsetters.WithStatusCode(ctx, http.StatusOK)
resp.Header().Set("Content-Type", "application/protobuf")
resp.Header().Set("Content-Length", strconv.Itoa(len(respBytes)))
resp.WriteHeader(http.StatusOK)
if n, err := resp.Write(respBytes); err != nil {
msg := fmt.Sprintf("failed to write response, %d of %d bytes written: %s", n, len(respBytes), err.Error())
twerr := twirp.NewError(twirp.Unknown, msg)
ctx = callError(ctx, s.hooks, twerr)
}
callResponseSent(ctx, s.hooks)
}
func (s *greeterServiceServer) ServiceDescriptor() ([]byte, int) {
return twirpFileDescriptor0, 0
}
func (s *greeterServiceServer) ProtocGenTwirpVersion() string {
return "v8.1.3"
}
// PathPrefix returns the base service path, in the form: "/<prefix>/<package>.<Service>/"
// that is everything in a Twirp route except for the <Method>. This can be used for routing,
// for example to identify the requests that are targeted to this service in a mux.
func (s *greeterServiceServer) PathPrefix() string {
return baseServicePath(s.pathPrefix, "api.rpc.v1", "GreeterService")
}
// =====
// Utils
// =====
// HTTPClient is the interface used by generated clients to send HTTP requests.
// It is fulfilled by *(net/http).Client, which is sufficient for most users.
// Users can provide their own implementation for special retry policies.
//
// HTTPClient implementations should not follow redirects. Redirects are
// automatically disabled if *(net/http).Client is passed to client
// constructors. See the withoutRedirects function in this file for more
// details.
type HTTPClient interface {
Do(req *http.Request) (*http.Response, error)
}
// TwirpServer is the interface generated server structs will support: they're
// HTTP handlers with additional methods for accessing metadata about the
// service. Those accessors are a low-level API for building reflection tools.
// Most people can think of TwirpServers as just http.Handlers.
type TwirpServer interface {
http.Handler
// ServiceDescriptor returns gzipped bytes describing the .proto file that
// this service was generated from. Once unzipped, the bytes can be
// unmarshalled as a
// google.golang.org/protobuf/types/descriptorpb.FileDescriptorProto.
//
// The returned integer is the index of this particular service within that
// FileDescriptorProto's 'Service' slice of ServiceDescriptorProtos. This is a
// low-level field, expected to be used for reflection.
ServiceDescriptor() ([]byte, int)
// ProtocGenTwirpVersion is the semantic version string of the version of
// twirp used to generate this file.
ProtocGenTwirpVersion() string
// PathPrefix returns the HTTP URL path prefix for all methods handled by this
// service. This can be used with an HTTP mux to route Twirp requests.
// The path prefix is in the form: "/<prefix>/<package>.<Service>/"
// that is, everything in a Twirp route except for the <Method> at the end.
PathPrefix() string
}
func newServerOpts(opts []interface{}) *twirp.ServerOptions {
serverOpts := &twirp.ServerOptions{}
for _, opt := range opts {
switch o := opt.(type) {
case twirp.ServerOption:
o(serverOpts)
case *twirp.ServerHooks: // backwards compatibility, allow to specify hooks as an argument
twirp.WithServerHooks(o)(serverOpts)
case nil: // backwards compatibility, allow nil value for the argument
continue
default:
panic(fmt.Sprintf("Invalid option type %T, please use a twirp.ServerOption", o))
}
}
return serverOpts
}
// WriteError writes an HTTP response with a valid Twirp error format (code, msg, meta).
// Useful outside of the Twirp server (e.g. http middleware), but does not trigger hooks.
// If err is not a twirp.Error, it will get wrapped with twirp.InternalErrorWith(err)
func WriteError(resp http.ResponseWriter, err error) {
writeError(context.Background(), resp, err, nil)
}
// writeError writes Twirp errors in the response and triggers hooks.
func writeError(ctx context.Context, resp http.ResponseWriter, err error, hooks *twirp.ServerHooks) {
// Convert to a twirp.Error. Non-twirp errors are converted to internal errors.
var twerr twirp.Error
if !errors.As(err, &twerr) {
twerr = twirp.InternalErrorWith(err)
}
statusCode := twirp.ServerHTTPStatusFromErrorCode(twerr.Code())
ctx = ctxsetters.WithStatusCode(ctx, statusCode)
ctx = callError(ctx, hooks, twerr)
respBody := marshalErrorToJSON(twerr)
resp.Header().Set("Content-Type", "application/json") // Error responses are always JSON
resp.Header().Set("Content-Length", strconv.Itoa(len(respBody)))
resp.WriteHeader(statusCode) // set HTTP status code and send response
_, writeErr := resp.Write(respBody)
if writeErr != nil {
// We have three options here. We could log the error, call the Error
// hook, or just silently ignore the error.
//
// Logging is unacceptable because we don't have a user-controlled
// logger; writing out to stderr without permission is too rude.
//
// Calling the Error hook would confuse users: it would mean the Error
// hook got called twice for one request, which is likely to lead to
// duplicated log messages and metrics, no matter how well we document
// the behavior.
//
// Silently ignoring the error is our least-bad option. It's highly
// likely that the connection is broken and the original 'err' says
// so anyway.
_ = writeErr
}
callResponseSent(ctx, hooks)
}
// sanitizeBaseURL parses the the baseURL, and adds the "http" scheme if needed.
// If the URL is unparsable, the baseURL is returned unchanged.
func sanitizeBaseURL(baseURL string) string {
u, err := url.Parse(baseURL)
if err != nil {
return baseURL // invalid URL will fail later when making requests
}
if u.Scheme == "" {
u.Scheme = "http"
}
return u.String()
}
// baseServicePath composes the path prefix for the service (without <Method>).
// e.g.: baseServicePath("/twirp", "my.pkg", "MyService")
//
// returns => "/twirp/my.pkg.MyService/"
//
// e.g.: baseServicePath("", "", "MyService")
//
// returns => "/MyService/"
func baseServicePath(prefix, pkg, service string) string {
fullServiceName := service
if pkg != "" {
fullServiceName = pkg + "." + service
}
return path.Join("/", prefix, fullServiceName) + "/"
}
// parseTwirpPath extracts path components form a valid Twirp route.
// Expected format: "[<prefix>]/<package>.<Service>/<Method>"
// e.g.: prefix, pkgService, method := parseTwirpPath("/twirp/pkg.Svc/MakeHat")
func parseTwirpPath(path string) (string, string, string) {
parts := strings.Split(path, "/")
if len(parts) < 2 {
return "", "", ""
}
method := parts[len(parts)-1]
pkgService := parts[len(parts)-2]
prefix := strings.Join(parts[0:len(parts)-2], "/")
return prefix, pkgService, method
}
// getCustomHTTPReqHeaders retrieves a copy of any headers that are set in
// a context through the twirp.WithHTTPRequestHeaders function.
// If there are no headers set, or if they have the wrong type, nil is returned.
func getCustomHTTPReqHeaders(ctx context.Context) http.Header {
header, ok := twirp.HTTPRequestHeaders(ctx)
if !ok || header == nil {
return nil
}
copied := make(http.Header)
for k, vv := range header {
if vv == nil {
copied[k] = nil
continue
}
copied[k] = make([]string, len(vv))
copy(copied[k], vv)
}
return copied
}
// newRequest makes an http.Request from a client, adding common headers.
func newRequest(ctx context.Context, url string, reqBody io.Reader, contentType string) (*http.Request, error) {
req, err := http.NewRequest("POST", url, reqBody)
if err != nil {
return nil, err
}
req = req.WithContext(ctx)
if customHeader := getCustomHTTPReqHeaders(ctx); customHeader != nil {
req.Header = customHeader
}
req.Header.Set("Accept", contentType)
req.Header.Set("Content-Type", contentType)
req.Header.Set("Twirp-Version", "v8.1.3")
return req, nil
}
// JSON serialization for errors
type twerrJSON struct {
Code string `json:"code"`
Msg string `json:"msg"`
Meta map[string]string `json:"meta,omitempty"`
}
// marshalErrorToJSON returns JSON from a twirp.Error, that can be used as HTTP error response body.
// If serialization fails, it will use a descriptive Internal error instead.
func marshalErrorToJSON(twerr twirp.Error) []byte {
// make sure that msg is not too large
msg := twerr.Msg()
if len(msg) > 1e6 {
msg = msg[:1e6]
}
tj := twerrJSON{
Code: string(twerr.Code()),
Msg: msg,
Meta: twerr.MetaMap(),
}
buf, err := json.Marshal(&tj)
if err != nil {
buf = []byte("{\"type\": \"" + twirp.Internal + "\", \"msg\": \"There was an error but it could not be serialized into JSON\"}") // fallback
}
return buf
}
// errorFromResponse builds a twirp.Error from a non-200 HTTP response.
// If the response has a valid serialized Twirp error, then it's returned.
// If not, the response status code is used to generate a similar twirp
// error. See twirpErrorFromIntermediary for more info on intermediary errors.
func errorFromResponse(resp *http.Response) twirp.Error {
statusCode := resp.StatusCode
statusText := http.StatusText(statusCode)
if isHTTPRedirect(statusCode) {
// Unexpected redirect: it must be an error from an intermediary.
// Twirp clients don't follow redirects automatically, Twirp only handles
// POST requests, redirects should only happen on GET and HEAD requests.
location := resp.Header.Get("Location")
msg := fmt.Sprintf("unexpected HTTP status code %d %q received, Location=%q", statusCode, statusText, location)
return twirpErrorFromIntermediary(statusCode, msg, location)
}
respBodyBytes, err := io.ReadAll(resp.Body)
if err != nil {
return wrapInternal(err, "failed to read server error response body")
}
var tj twerrJSON
dec := json.NewDecoder(bytes.NewReader(respBodyBytes))
dec.DisallowUnknownFields()
if err := dec.Decode(&tj); err != nil || tj.Code == "" {
// Invalid JSON response; it must be an error from an intermediary.
msg := fmt.Sprintf("Error from intermediary with HTTP status code %d %q", statusCode, statusText)
return twirpErrorFromIntermediary(statusCode, msg, string(respBodyBytes))
}
errorCode := twirp.ErrorCode(tj.Code)
if !twirp.IsValidErrorCode(errorCode) {
msg := "invalid type returned from server error response: " + tj.Code
return twirp.InternalError(msg).WithMeta("body", string(respBodyBytes))
}
twerr := twirp.NewError(errorCode, tj.Msg)
for k, v := range tj.Meta {
twerr = twerr.WithMeta(k, v)
}
return twerr
}
// twirpErrorFromIntermediary maps HTTP errors from non-twirp sources to twirp errors.
// The mapping is similar to gRPC: https://github.com/grpc/grpc/blob/master/doc/http-grpc-status-mapping.md.
// Returned twirp Errors have some additional metadata for inspection.
func twirpErrorFromIntermediary(status int, msg string, bodyOrLocation string) twirp.Error {
var code twirp.ErrorCode
if isHTTPRedirect(status) { // 3xx
code = twirp.Internal
} else {
switch status {
case 400: // Bad Request
code = twirp.Internal
case 401: // Unauthorized
code = twirp.Unauthenticated
case 403: // Forbidden
code = twirp.PermissionDenied
case 404: // Not Found
code = twirp.BadRoute
case 429: // Too Many Requests
code = twirp.ResourceExhausted
case 502, 503, 504: // Bad Gateway, Service Unavailable, Gateway Timeout
code = twirp.Unavailable
default: // All other codes
code = twirp.Unknown
}
}
twerr := twirp.NewError(code, msg)
twerr = twerr.WithMeta("http_error_from_intermediary", "true") // to easily know if this error was from intermediary
twerr = twerr.WithMeta("status_code", strconv.Itoa(status))
if isHTTPRedirect(status) {
twerr = twerr.WithMeta("location", bodyOrLocation)
} else {
twerr = twerr.WithMeta("body", bodyOrLocation)
}
return twerr
}
func isHTTPRedirect(status int) bool {
return status >= 300 && status <= 399
}
// wrapInternal wraps an error with a prefix as an Internal error.
// The original error cause is accessible by github.com/pkg/errors.Cause.
func wrapInternal(err error, prefix string) twirp.Error {
return twirp.InternalErrorWith(&wrappedError{prefix: prefix, cause: err})
}
type wrappedError struct {
prefix string
cause error
}
func (e *wrappedError) Error() string { return e.prefix + ": " + e.cause.Error() }
func (e *wrappedError) Unwrap() error { return e.cause } // for go1.13 + errors.Is/As
func (e *wrappedError) Cause() error { return e.cause } // for github.com/pkg/errors
// ensurePanicResponses makes sure that rpc methods causing a panic still result in a Twirp Internal
// error response (status 500), and error hooks are properly called with the panic wrapped as an error.
// The panic is re-raised so it can be handled normally with middleware.
func ensurePanicResponses(ctx context.Context, resp http.ResponseWriter, hooks *twirp.ServerHooks) {
if r := recover(); r != nil {
// Wrap the panic as an error so it can be passed to error hooks.
// The original error is accessible from error hooks, but not visible in the response.
err := errFromPanic(r)
twerr := &internalWithCause{msg: "Internal service panic", cause: err}
// Actually write the error
writeError(ctx, resp, twerr, hooks)
// If possible, flush the error to the wire.
f, ok := resp.(http.Flusher)
if ok {
f.Flush()
}
panic(r)
}
}
// errFromPanic returns the typed error if the recovered panic is an error, otherwise formats as error.
func errFromPanic(p interface{}) error {
if err, ok := p.(error); ok {
return err
}
return fmt.Errorf("panic: %v", p)
}
// internalWithCause is a Twirp Internal error wrapping an original error cause,
// but the original error message is not exposed on Msg(). The original error
// can be checked with go1.13+ errors.Is/As, and also by (github.com/pkg/errors).Unwrap
type internalWithCause struct {
msg string
cause error
}
func (e *internalWithCause) Unwrap() error { return e.cause } // for go1.13 + errors.Is/As
func (e *internalWithCause) Cause() error { return e.cause } // for github.com/pkg/errors
func (e *internalWithCause) Error() string { return e.msg + ": " + e.cause.Error() }
func (e *internalWithCause) Code() twirp.ErrorCode { return twirp.Internal }
func (e *internalWithCause) Msg() string { return e.msg }
func (e *internalWithCause) Meta(key string) string { return "" }
func (e *internalWithCause) MetaMap() map[string]string { return nil }
func (e *internalWithCause) WithMeta(key string, val string) twirp.Error { return e }
// malformedRequestError is used when the twirp server cannot unmarshal a request
func malformedRequestError(msg string) twirp.Error {
return twirp.NewError(twirp.Malformed, msg)
}
// badRouteError is used when the twirp server cannot route a request
func badRouteError(msg string, method, url string) twirp.Error {
err := twirp.NewError(twirp.BadRoute, msg)
err = err.WithMeta("twirp_invalid_route", method+" "+url)
return err
}
// withoutRedirects makes sure that the POST request can not be redirected.
// The standard library will, by default, redirect requests (including POSTs) if it gets a 302 or
// 303 response, and also 301s in go1.8. It redirects by making a second request, changing the
// method to GET and removing the body. This produces very confusing error messages, so instead we
// set a redirect policy that always errors. This stops Go from executing the redirect.
//
// We have to be a little careful in case the user-provided http.Client has its own CheckRedirect
// policy - if so, we'll run through that policy first.
//
// Because this requires modifying the http.Client, we make a new copy of the client and return it.
func withoutRedirects(in *http.Client) *http.Client {
copy := *in
copy.CheckRedirect = func(req *http.Request, via []*http.Request) error {
if in.CheckRedirect != nil {
// Run the input's redirect if it exists, in case it has side effects, but ignore any error it
// returns, since we want to use ErrUseLastResponse.
err := in.CheckRedirect(req, via)
_ = err // Silly, but this makes sure generated code passes errcheck -blank, which some people use.
}
return http.ErrUseLastResponse
}
return ©
}
// doProtobufRequest makes a Protobuf request to the remote Twirp service.
func doProtobufRequest(ctx context.Context, client HTTPClient, hooks *twirp.ClientHooks, url string, in, out proto.Message) (_ context.Context, err error) {
reqBodyBytes, err := proto.Marshal(in)
if err != nil {
return ctx, wrapInternal(err, "failed to marshal proto request")
}
reqBody := bytes.NewBuffer(reqBodyBytes)
if err = ctx.Err(); err != nil {
return ctx, wrapInternal(err, "aborted because context was done")
}
req, err := newRequest(ctx, url, reqBody, "application/protobuf")
if err != nil {
return ctx, wrapInternal(err, "could not build request")
}
ctx, err = callClientRequestPrepared(ctx, hooks, req)
if err != nil {
return ctx, err
}
req = req.WithContext(ctx)
resp, err := client.Do(req)
if err != nil {
return ctx, wrapInternal(err, "failed to do request")
}
defer func() { _ = resp.Body.Close() }()
if err = ctx.Err(); err != nil {
return ctx, wrapInternal(err, "aborted because context was done")
}
if resp.StatusCode != 200 {
return ctx, errorFromResponse(resp)
}
respBodyBytes, err := io.ReadAll(resp.Body)
if err != nil {
return ctx, wrapInternal(err, "failed to read response body")
}
if err = ctx.Err(); err != nil {
return ctx, wrapInternal(err, "aborted because context was done")
}
if err = proto.Unmarshal(respBodyBytes, out); err != nil {
return ctx, wrapInternal(err, "failed to unmarshal proto response")
}
return ctx, nil
}
// doJSONRequest makes a JSON request to the remote Twirp service.
func doJSONRequest(ctx context.Context, client HTTPClient, hooks *twirp.ClientHooks, url string, in, out proto.Message) (_ context.Context, err error) {
marshaler := &protojson.MarshalOptions{UseProtoNames: true}
reqBytes, err := marshaler.Marshal(in)
if err != nil {
return ctx, wrapInternal(err, "failed to marshal json request")
}
if err = ctx.Err(); err != nil {
return ctx, wrapInternal(err, "aborted because context was done")
}
req, err := newRequest(ctx, url, bytes.NewReader(reqBytes), "application/json")
if err != nil {
return ctx, wrapInternal(err, "could not build request")
}
ctx, err = callClientRequestPrepared(ctx, hooks, req)
if err != nil {
return ctx, err
}
req = req.WithContext(ctx)
resp, err := client.Do(req)
if err != nil {
return ctx, wrapInternal(err, "failed to do request")
}
defer func() {
cerr := resp.Body.Close()
if err == nil && cerr != nil {
err = wrapInternal(cerr, "failed to close response body")
}
}()
if err = ctx.Err(); err != nil {
return ctx, wrapInternal(err, "aborted because context was done")
}
if resp.StatusCode != 200 {
return ctx, errorFromResponse(resp)
}
d := json.NewDecoder(resp.Body)
rawRespBody := json.RawMessage{}
if err := d.Decode(&rawRespBody); err != nil {
return ctx, wrapInternal(err, "failed to unmarshal json response")
}
unmarshaler := protojson.UnmarshalOptions{DiscardUnknown: true}
if err = unmarshaler.Unmarshal(rawRespBody, out); err != nil {
return ctx, wrapInternal(err, "failed to unmarshal json response")
}
if err = ctx.Err(); err != nil {
return ctx, wrapInternal(err, "aborted because context was done")
}
return ctx, nil
}
// Call twirp.ServerHooks.RequestReceived if the hook is available
func callRequestReceived(ctx context.Context, h *twirp.ServerHooks) (context.Context, error) {
if h == nil || h.RequestReceived == nil {
return ctx, nil
}
return h.RequestReceived(ctx)
}
// Call twirp.ServerHooks.RequestRouted if the hook is available
func callRequestRouted(ctx context.Context, h *twirp.ServerHooks) (context.Context, error) {
if h == nil || h.RequestRouted == nil {
return ctx, nil
}
return h.RequestRouted(ctx)
}
// Call twirp.ServerHooks.ResponsePrepared if the hook is available
func callResponsePrepared(ctx context.Context, h *twirp.ServerHooks) context.Context {
if h == nil || h.ResponsePrepared == nil {
return ctx
}
return h.ResponsePrepared(ctx)
}
// Call twirp.ServerHooks.ResponseSent if the hook is available
func callResponseSent(ctx context.Context, h *twirp.ServerHooks) {
if h == nil || h.ResponseSent == nil {
return
}
h.ResponseSent(ctx)
}
// Call twirp.ServerHooks.Error if the hook is available
func callError(ctx context.Context, h *twirp.ServerHooks, err twirp.Error) context.Context {
if h == nil || h.Error == nil {
return ctx
}
return h.Error(ctx, err)
}
func callClientResponseReceived(ctx context.Context, h *twirp.ClientHooks) {
if h == nil || h.ResponseReceived == nil {
return
}
h.ResponseReceived(ctx)
}
func callClientRequestPrepared(ctx context.Context, h *twirp.ClientHooks, req *http.Request) (context.Context, error) {
if h == nil || h.RequestPrepared == nil {
return ctx, nil
}
return h.RequestPrepared(ctx, req)
}
func callClientError(ctx context.Context, h *twirp.ClientHooks, err twirp.Error) {
if h == nil || h.Error == nil {
return
}
h.Error(ctx, err)
}
var twirpFileDescriptor0 = []byte{
// 273 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x6c, 0x50, 0xcd, 0x4a, 0xc4, 0x30,
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0x6b, 0x2d, 0x68, 0x2d, 0xa5, 0x72, 0xb5, 0x13, 0x4a, 0xda, 0x4e, 0x59, 0xac, 0x60, 0xfe, 0x88,
0x6d, 0xab, 0x2a, 0x7c, 0xdb, 0xa2, 0x75, 0x24, 0x83, 0xa9, 0xdd, 0x6e, 0x5e, 0x91, 0xbb, 0x2c,
0xb9, 0x48, 0x56, 0xb3, 0x6a, 0x80, 0xc5, 0x25, 0xa4, 0xbd, 0xd2, 0x6a, 0x25, 0x2d, 0x12, 0x02,
0x13, 0x87, 0xef, 0x83, 0x2e, 0xce, 0x45, 0x0a, 0x47, 0x6b, 0xd1, 0xc8, 0x3e, 0x2d, 0xa4, 0x77,
0xb0, 0xb7, 0x64, 0x30, 0x6d, 0x05, 0x47, 0x69, 0x31, 0xba, 0xe6, 0xd5, 0x00, 0xaf, 0xbf, 0x12,
0x58, 0x3c, 0x18, 0x44, 0x87, 0x66, 0xdd, 0x9d, 0x42, 0x2a, 0xd8, 0x8f, 0x0b, 0x49, 0x56, 0xfe,
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0x88, 0x3f, 0xbd, 0xf9, 0x0d, 0x00, 0x00, 0xff, 0xff, 0x6b, 0x0a, 0x6e, 0xf8, 0x91, 0x01, 0x00,
0x00,
}