使用trident-sdk发送gRPC请求

trident sdk截止至版本0.7.0，尚未支持tls认证的方式进行gRPC请求，因此需要按照示例代码，通过java反射的方式，打开trident的tls认证进行节点对接。

在节点页面下载证书，将压缩包内的ca.crt证书放在项目内的目录。

在sdk中配置gRPC endpoint，示例代码如下：

import io.gRPC.*;
import io.gRPC.stub.MetadataUtils;
import org.tron.trident.api.WalletgRPC;
import org.tron.trident.api.WalletSoliditygRPC;
import org.tron.trident.core.ApiWrapper;
import org.tron.trident.core.exceptions.IllegalException;
import org.tron.trident.core.key.KeyPair;

import java.io.File;
import java.io.IOException;
import java.lang.reflect.Field;

public class Main {
    public static void main(String[] args) throws IllegalException, IOException, NoSuchFieldException,
            IllegalAccessException {
        String gRPCEndpoint = "your-gRPC-endpoint";
        String gRPCSolidityEndpoint = "your-gRPCsolidity-endpoint";
        String credential = "your-credential";
        String hexPrivateKey = "your-hex-private-key";
        ApiWrapper wrapper = new ApiWrapper(gRPCEndpoint, gRPCSolidityEndpoint, hexPrivateKey, credential);
        // modify wallet channel through reflex
        ChannelCredentials creds = TlsChannelCredentials.newBuilder()
                .trustManager(new File("your-ca.crt-file-path"))
                .build();
        ManagedChannel channel = gRPC.newChannelBuilder(gRPCEndpoint, creds)
                .build();
        Metadata header = new Metadata();
        Metadata.Key<String> key = Metadata.Key.of("TRON-PRO-API-KEY", Metadata.ASCII_STRING_MARSHALLER);
        header.put(key, credential);
        setField(ApiWrapper.class, wrapper, "channel", channel);
        setField(ApiWrapper.class, wrapper, "blockingStub", MetadataUtils.attachHeaders(WalletgRPC.newBlockingStub(channel), header));
        // modify walletsolidity channel through reflex
        ManagedChannel channelSolidity = gRPC.newChannelBuilder(gRPCSolidityEndpoint, creds)
                .build();
        setField(ApiWrapper.class, wrapper, "channelSolidity", channelSolidity);
        setField(ApiWrapper.class, wrapper, "blockingStubSolidity", MetadataUtils.attachHeaders(WalletSoliditygRPC.newBlockingStub(channelSolidity), header));
        // getNowBlock & getNowBlockSolidity test
        System.out.println(wrapper.getNowBlock());
        System.out.println(wrapper.getNowBlockSolidity());
        System.out.println("finish");
    }
    private static void setField(Class clazz, Object obj, String fieldName, Object value) throws NoSuchFieldException,
            IllegalAccessException {
        Field field = clazz.getDeclaredField(fieldName);
        field.setAccessible(true);
        field.set(obj, value);
    }
}

Response example: