src/cpp/client/create_channel.cc

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#include <memory>
#include <sstream>

#include "src/cpp/client/channel.h"
#include <grpc++/channel_interface.h>
#include <grpc++/channel_arguments.h>
#include <grpc++/create_channel.h>

namespace grpc {
class ChannelArguments;

std::shared_ptr<ChannelInterface> CreateChannel(
    const grpc::string& target, const std::shared_ptr<Credentials>& creds,
    const ChannelArguments& args) {
  ChannelArguments cp_args = args;
  std::ostringstream user_agent_prefix;
  user_agent_prefix << "grpc-c++/" << grpc_version_string();
  cp_args.SetString(GRPC_ARG_PRIMARY_USER_AGENT_STRING,
                    user_agent_prefix.str());
  return creds ? creds->CreateChannel(target, cp_args)
               : std::shared_ptr<ChannelInterface>(
                     new Channel(target, grpc_lame_client_channel_create(NULL)));
}
}  // namespace grpc