GRPC TLS Server example for Java

Question

HelloWorldServer TLS示例

使用API:

server = Grpc.newServerBuilderForPort(port, tlscredentials)
.addService(new GreeterImpl())
.build();

然而，这个API不允许指定超时。基于Netty的API允许这种超时。例如:

server = NettyServerBuilder.forPort(port)
.channelType(NioServerSocketChannel.class)
.permitKeepAliveTime(timeout)       // can specify keepalive parameters
.permitKeepAliveWithoutCalls(true)  // can specify keepalive parameters
.addService(new GreeterImpl())
.sslContext(getSslContextBuilder().build())
.build();

示例代码看起来更干净，但我找不到一种简单的方法来指定keepalive参数。什么好主意吗?

Answer 1

因为Grpc.newServerBuilderForPort()返回类型声明为ServerBuilder，而您想要的方法在NettyServerBuilder中可用。您可以获取构建器并检查其类型，如下所示:

ServerBuilder<?> builder = Grpc.newServerBuilderForPort(port, tlscredentials);
if (builder instanceof NettyServerBuilder) {
NettyServerBuilder nsBuilder = (NettyServerBuilder)builder;
builder = nsBuilder
.channelType(NioServerSocketChannel.class)
.permitKeepAliveTime(timeout)       // can specify keepalive parameters
.permitKeepAliveWithoutCalls(true);  // can specify keepalive parameters
}
server = builder.addService(new GreeterImpl()).build();

您不需要设置sslContext，因为您已经使用了tlsCredentials。