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grpc_dialer.go
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/
grpc_dialer.go
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package transport
import (
"context"
"net"
"github.com/josexy/mini-ss/connection"
"github.com/josexy/mini-ss/connection/proto"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/credentials/insecure"
"google.golang.org/grpc/encoding/gzip"
)
type grpcDialer struct {
tcpDialer
opts *GrpcOptions
}
func (d *grpcDialer) Dial(ctx context.Context, addr string) (net.Conn, error) {
var dialOpts []grpc.DialOption
var callOpts []grpc.CallOption
if d.opts.SndBuffer > 0 {
dialOpts = append(dialOpts, grpc.WithWriteBufferSize(d.opts.SndBuffer))
}
if d.opts.RevBuffer > 0 {
dialOpts = append(dialOpts, grpc.WithReadBufferSize(d.opts.RevBuffer))
}
callOpts = append(callOpts, grpc.UseCompressor(gzip.Name))
cred := insecure.NewCredentials()
tlsConfig, err := d.opts.TlsOptions.GetClientTlsConfig()
if err != nil {
return nil, err
}
if tlsConfig != nil {
cred = credentials.NewTLS(tlsConfig)
}
dialOpts = append(dialOpts,
grpc.WithDefaultCallOptions(callOpts...),
grpc.WithTransportCredentials(cred),
grpc.WithContextDialer(d.tcpDialer.Dial),
)
conn, err := grpc.DialContext(ctx, addr, dialOpts...)
if err != nil {
return nil, err
}
client := proto.NewStreamServiceClient(conn)
cStream, err := client.Transfer(ctx)
if err != nil {
return nil, err
}
return connection.NewGrpcClientStreamConn(cStream, conn), nil
}