laf_rpc

A simple RPC implemented based on QtNetworkNg. Many features:

• Using TCP protocol
• Long connection
• Connected peers can call each other.
• Support sending file

Here comes an hello world example:

The server source:

// server.cpp
#include "lafrpc.h"

using namespace lafrpc;

class Hello: public QObject
{
    Q_OBJECT
public slots:
    QString sayHello(const QString &name) { return QStringLiteral("Hello, %1").arg(name); }
};

int main(int argc, char **argv)
{
    QSharedPointer<Rpc> rpc = RpcBuilder(MessagePack).myPeerName("server").create();
    QSharedPointer<Hello> hello(new Hello());
    rpc->registerInstance(hello, "demo");
    rpc->startServer("tcp://127.0.0.1:8002");
    return 0;
}

#include "server.moc"

The client source:

// client.cpp
#include "lafrpc.h"

using namespace lafrpc;

int main(int argc, char **argv)
{
    QSharedPointer<Rpc> rpc = RpcBuilder(MessagePack).myPeerName("client").create();
    QSharedPointer<Peer> peer = rpc->connect("tcp://127.0.0.1:8002");
    if (peer.isNull()) {
        qDebug() << "can not connect to peer.";
        return 2;
    }
    QString result = peer->call("demo.sayHello", "Goldfish").toString();
    qDebug() << result;
    return 0;
}

The cmake build file:

CMAKE_MINIMUM_REQUIRED(VERSION 3.3.0 FATAL_ERROR)

PROJECT(pbook)

SET(CMAKE_AUTOMOC ON)

FIND_PACKAGE(Qt5Core REQUIRED)

ADD_SUBDIRECTORY(lafrpc/cpp/ lafrpc)

ADD_EXECUTABLE(server server.cpp)
ADD_EXECUTABLE(client client.cpp)

TARGET_LINK_LIBRARIES(server Qt5::Core lafrpc)
TARGET_LINK_LIBRARIES(client Qt5::Core lafrpc)

Now your project have 3 files:

hello/
    server.cpp
    client.cpp
    CMakeLists.cpp

Clone this project to project directory:

git clone --recursive https://github.com/hgoldfish/lafrpc

Then you have 3 files and a subdirectory:

hello/
    server.cpp
    client.cpp
    CMakeLists.txt
    lafrpc/

Build and test:

mkdir build
cmake ..
make -j8
./server
./client   # in another console.