如何捕获ssh_options_set函数的异常

问题描述

我具有此功能,可以处理与ssh的连接。

connectSession()
{
    std::string _ErrMsg;
    MyException errMsg;
    int port = 22;
    try
    {
        if (my_ssh_session == NULL) {
            std::cout << "Error creating ssh session" << std::endl;
            throw MyException("Error in creating session");
        }

        try
        {
            ssh_options_set(my_ssh_session,SSH_OPTIONS_HOST,(const void*)(authentication.ip));
            ssh_options_set(my_ssh_session,SSH_OPTIONS_USER,(const void*)(authentication.userName));
            ssh_options_set(my_ssh_session,SSH_OPTIONS_PORT,&port);
    
        int rc = ssh_connect(my_ssh_session);
        if (rc != SSH_OK) {
            std::cout << "Error with connecting" << std::endl;
            _ErrMsg = ssh_get_error(my_ssh_session);
            ssh_free(my_ssh_session);
            throw MyException(_ErrMsg);
        }
        rc = ssh_userauth_password(my_ssh_session,NULL,(const char*)(authentication.pw));
        if (rc != SSH_AUTH_SUCCESS) {
            std::cout << "Authentication failed " << ssh_get_error(my_ssh_session) << std::endl;
            _ErrMsg = ssh_get_error(my_ssh_session);
            ssh_disconnect(my_ssh_session);
            ssh_free(my_ssh_session);
            throw invalid_argument(_ErrMsg);
        }
    }
    catch (const invalid_argument& e)
    {
        throw_with_nested(invalid_argument(e.what()));
    }
}

我已将my_ssh_session = ssh_new();放入构造函数中。
我希望能够在ssh_options_set发生异常时捕获异常(例如,当评论my_ssh_session = ssh_new();时抛出异常)错误。)我该怎么办?

解决方法

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