Qt6.5 GRPC component not support bidirectional streaming?

[GrayHsu]

Hi All,
My .proto as below：
```
syntax = "proto3";

package helloworld;

message HelloRequest {
string name = 1;
}

message HelloResponse {
string message = 1;
}

service HelloService {
rpc SayHello (HelloRequest) returns (HelloResponse) {}
rpc SayHelloStream(stream HelloRequest) returns (stream HelloResponse) {}
rpc ClientSayHello(stream HelloRequest) returns (HelloResponse) {}
rpc ServerSayHello(HelloRequest) returns (stream HelloResponse) {}
}

option go_package = "proto/helloworld";

Using protoc to connect to the grpc code generated by the qtgrpcgen included in Qt6.5, code as below:

/* This file is autogenerated. DO NOT CHANGE. All changes will be lost */

#ifndef Q_PROTOBUF_helloworld_client_H
#define Q_PROTOBUF_helloworld_client_H

#include <QtProtobuf/QProtobufMessage>
#include <QtCore/QMetaType>
#include <QtCore/QList>

#include <QtProtobuf/qprotobufobject.h>
#include <QtProtobuf/qprotobuflazymessagepointer.h>

#include <memory>

#include <QAbstractGrpcClient>
#include <QGrpcCallReply>
#include <QGrpcStream>
#include "helloworld.qpb.h"

namespace helloworld {
namespace HelloService {

class Client : public QAbstractGrpcClient
{
Q_OBJECT

public:
explicit Client(QObject *parent = nullptr);
QGrpcStatus SayHello(const helloworld::HelloRequest &arg, helloworld::HelloResponse *ret);
std::shared_ptr<QGrpcCallReply> SayHello(const helloworld::HelloRequest &arg);
Q_INVOKABLE void SayHello(const helloworld::HelloRequest &arg, const QObject *context, const std::function<void(std::shared_ptr<QGrpcCallReply>)> &callback);

std::shared_ptr<QGrpcStream> streamSayHelloStream(const helloworld::HelloRequest &arg);
std::shared_ptr<QGrpcStream> streamSayHelloStream(const helloworld::HelloRequest &arg, const QWeakPointer<helloworld::HelloResponse> &ret);

QGrpcStatus ClientSayHello(const helloworld::HelloRequest &arg, helloworld::HelloResponse *ret);
std::shared_ptr<QGrpcCallReply> ClientSayHello(const helloworld::HelloRequest &arg);
Q_INVOKABLE void ClientSayHello(const helloworld::HelloRequest &arg, const QObject *context, const std::function<void(std::shared_ptr<QGrpcCallReply>)> &callback);

std::shared_ptr<QGrpcStream> streamServerSayHello(const helloworld::HelloRequest &arg);
std::shared_ptr<QGrpcStream> streamServerSayHello(const helloworld::HelloRequest &arg, const QWeakPointer<helloworld::HelloResponse> &ret);

private:

};

} // namespace HelloService
} // namespace helloworld

#endif // Q_PROTOBUF_helloworld_client_H

 I have found that currently only server streaming is supported, but client streaming seems to not be supported yet.
Question: Using the existing Qt6.5 GRPC component, how can bidirectional streaming be implemented?

Best Regards,
Gray Hsu

[semlanik]

@GrayHsu Unfortunately it doesn't, we only planned to add support in Qt 6.7

[GrayHsu]

@semlanik Thank you for your answer. I will implement the functionality in my own way.