Re: [libjsonrpccpp-devel] No client connection handler found

[Peter Spiess-K. <de...@sp...>]

Hi Jason!

Sorry for the late response, I've been busy lately.

First, is there a reason why you are not using the stub-generator? It
usually eliminates most manual interface errors.

>From the current code snippet, I cannot see any error now, but I could
overlook something. Could paste the URL to the project or something that
is actually compileable? This makes debugging easier.

This error comes from here:

https://github.com/cinemast/libjson-rpc-cpp/blob/ccbdb41388bdd929828941652da816bf52a0580e/src/jsonrpccpp/server/connectors/httpserver.cpp#L159

This means that the RPC server is not properly registered with the
server connector.

Greetings,
Peter

On 11/23/2016 09:10 PM, Jason Miesionczek wrote:
> Hello,
> 
> trying to get a basic json-rpc server up and running. Upon testing a
> method, i get this error from curl:
> 
> No client connection handler found
> 
> Here is my code:
> 
> #include <jsonrpccpp/server.h>
> 
> class AbstractStubServer : public
> jsonrpc::AbstractServer<AbstractStubServer>
> {
>     public:
>         AbstractStubServer(jsonrpc::AbstractServerConnector &conn,
> jsonrpc::serverVersion_t type = jsonrpc::JSONRPC_SERVER_V2) :
> jsonrpc::AbstractServer<AbstractStubServer>(conn, type)
>         {
>             this->bindAndAddMethod(jsonrpc::Procedure("connect",
> jsonrpc::PARAMS_BY_NAME, jsonrpc::JSON_STRING,
> "password",jsonrpc::JSON_STRING,"uri",jsonrpc::JSON_STRING, NULL),
> &AbstractStubServer::connectI);
>             this->bindAndAddMethod(jsonrpc::Procedure("hostGetVersion",
> jsonrpc::PARAMS_BY_NAME, jsonrpc::JSON_STRING,
> "connID",jsonrpc::JSON_STRING, NULL), &AbstractStubServer::hostGetVersionI);
>         }
> 
>         inline virtual void connectI(const Json::Value &request,
> Json::Value &response)
>         {
>             response = this->connect(request["password"].asString(),
> request["uri"].asString());
>         }
>         inline virtual void hostGetVersionI(const Json::Value &request,
> Json::Value &response)
>         {
>             response = this->hostGetVersion(request["connID"].asString());
>         }
>         virtual std::string connect(const std::string& password, const
> std::string& uri) = 0;
>         virtual std::string hostGetVersion(const std::string& connID) = 0;
> };
> 
> using namespace jsonrpc;
> using namespace std;
> 
> class RpcServer : public AbstractStubServer
> {
>     public:
>         RpcServer(AbstractServerConnector &connector,
> SHRDPTR(Drivers::DriverManager) manager);
> 
>         virtual std::string connect(const std::string &password, const
> std::string &uri);
>         virtual std::string hostGetVersion(const std::string& connID);
> 
>       private:
>         std::map<std::string, SHRDPTR(Drivers::IDriver)> connectionMap_;
>         SHRDPTR(Drivers::DriverManager)
>         manager_;
> };
> 
> RpcServer::RpcServer(AbstractServerConnector &connector,
> SHRDPTR(Drivers::DriverManager) manager) :
>     AbstractStubServer(connector), manager_(manager)
>     {
> 
>     }
> 
> std::string genConnectionID(std::string uri, std::string password)
> {
>     unsigned char result[MD5_DIGEST_LENGTH];
>     MD5((unsigned char*)uri.c_str(), uri.size(), result);
> 
>     std::ostringstream sout;
>     sout<<std::hex<<std::setfill('0');
>     for(long long c: result)
>     {
>         sout<<std::setw(2)<<(long long)c;
>     }
>     return sout.str();
> }
> 
> std::string RpcServer::connect(const std::string &password, const
> std::string &uri)
> {
>     auto conn = MKSHRD(Connection::HypervisorConnection, uri, password);
>     auto factory = this->manager_->get(conn->getProtocol());
>     auto driver = factory->create(conn);
>     auto id = genConnectionID(uri, password);
>     this->connectionMap_[id] = driver;
>     return id;
> }
> 
> std::string RpcServer::hostGetVersion(const std::string& connID)
> {
>     auto driver = this->connectionMap_[connID];
>     return driver->hostGetVersion();
> }
> 
> and in main:
> 
> HttpServer httpServer(8383);
>     RpcServer rpcServer(httpServer, manager);
>     rpcServer.StartListening();
>     getchar();
>     rpcServer.StopListening();
> 
> What am I missing?
> 
> Thanks,
> Jason
> 
> 
> ------------------------------------------------------------------------------
> 
> 
> 
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