Kyle Isom
ab2884a8e9
- Read x-engpad-username/x-engpad-password from gRPC metadata (matching what the Android client sends) - Allow TLS 1.2 on gRPC port — Android's BoringSSL/OkHttp transport does not negotiate TLS 1.3 without Conscrypt Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
70 lines
1.7 KiB
Go
70 lines
1.7 KiB
Go
package grpcserver
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import (
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"crypto/tls"
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"database/sql"
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"fmt"
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"log/slog"
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"net"
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pb "git.wntrmute.dev/kyle/eng-pad-server/gen/engpad/v1"
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"google.golang.org/grpc"
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"google.golang.org/grpc/credentials"
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)
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type Config struct {
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Addr string
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PlainAddr string
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TLSCert string
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TLSKey string
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DB *sql.DB
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BaseURL string
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}
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// Start creates and starts the gRPC server. It returns the server so the
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// caller can manage graceful shutdown. The server runs in a background
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// goroutine; errors are sent to errCh.
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func Start(cfg Config) (*grpc.Server, error) {
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cert, err := tls.LoadX509KeyPair(cfg.TLSCert, cfg.TLSKey)
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if err != nil {
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return nil, fmt.Errorf("load TLS cert: %w", err)
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}
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tlsConfig := &tls.Config{
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Certificates: []tls.Certificate{cert},
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MinVersion: tls.VersionTLS12,
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}
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lis, err := net.Listen("tcp", cfg.Addr)
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if err != nil {
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return nil, fmt.Errorf("listen %s: %w", cfg.Addr, err)
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}
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srv := grpc.NewServer(
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grpc.Creds(credentials.NewTLS(tlsConfig)),
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grpc.UnaryInterceptor(AuthInterceptor(cfg.DB)),
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)
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syncSvc := &SyncService{DB: cfg.DB, BaseURL: cfg.BaseURL}
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pb.RegisterEngPadSyncServiceServer(srv, syncSvc)
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slog.Info("gRPC server started", "addr", cfg.Addr)
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go func() { _ = srv.Serve(lis) }()
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// Optional plaintext listener for reverse proxy (e.g. nginx grpc_pass).
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if cfg.PlainAddr != "" {
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plainLis, err := net.Listen("tcp", cfg.PlainAddr)
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if err != nil {
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return nil, fmt.Errorf("listen %s: %w", cfg.PlainAddr, err)
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}
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plainSrv := grpc.NewServer(
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grpc.UnaryInterceptor(AuthInterceptor(cfg.DB)),
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)
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pb.RegisterEngPadSyncServiceServer(plainSrv, syncSvc)
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slog.Info("gRPC plaintext server started", "addr", cfg.PlainAddr)
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go func() { _ = plainSrv.Serve(plainLis) }()
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}
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return srv, nil
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}
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