Railway•17mo ago

can't reach site runs on Drogon

according to logs, Drogon runs successfully, but when I try to open the site, I get "Application failed to respond".

39 Replies

Percy•17mo ago

Project ID: 8c09c3c7-3c6b-469e-98a6-32062758ed19

Satan1cOP•17mo ago

8c09c3c7-3c6b-469e-98a6-32062758ed19

Brody•17mo ago

this docs page will help you https://docs.railway.app/troubleshoot/fixing-common-errors

Satan1cOP•17mo ago

in application I'm already use 0.0.0.0 as host and 80 port according to guide now I set PORT variable as 80, but nothing changes

Brody•17mo ago

that is actually not recommended you should ideally not be setting a PORT variable yourself please show me the app().addListener line

Satan1cOP•17mo ago

int main() {
    drogon::app()
            .setLogLevel(trantor::Logger::LogLevel::kTrace)
            .addListener("0.0.0.0", 80)
            .setThreadNum(0)
            .enableBrotli(true)
            .enableSession(24h)
#if WIN32
            .run();
#else
    .enableRunAsDaemon()
    .run();
#endif

    return 0;
}

int main() {
    drogon::app()
            .setLogLevel(trantor::Logger::LogLevel::kTrace)
            .addListener("0.0.0.0", 80)
            .setThreadNum(0)
            .enableBrotli(true)
            .enableSession(24h)
#if WIN32
            .run();
#else
    .enableRunAsDaemon()
    .run();
#endif

    return 0;
}

Brody•17mo ago

this docs page will help you https://docs.railway.app/troubleshoot/fixing-common-errors just to clearly reiterate on what that docs page wants you to do, listen on the environment variable PORT in your code

Satan1cOP•17mo ago

you mean that I need to get env var in code ? oh, I get that

Brody•17mo ago

yes, there are code examples at the bottom, none for c++ but that still gives you an idea of what needs to be done

Satan1cOP•17mo ago

railway has its own hidden PORT var earlier for my ASP.NET site I just set PORT var by my self k, I'll try

Brody•17mo ago

that is not the recommended method

Satan1cOP•17mo ago

from railway I got 5563 port, but I still can't access to site

Brody•17mo ago

show me the code please same bit of code you've already shown me

Satan1cOP•17mo ago

int main() {
    uint16_t port = std::stoi(getenv("PORT"));
    LOG_DEBUG << port << " port";
    drogon::app()
            .setLogLevel(trantor::Logger::LogLevel::kTrace)
            .addListener("0.0.0.0", port)
            .setThreadNum(0)
            .enableBrotli(true)
            .enableSession(24h)
#if WIN32
            .run();
#else
            .enableRunAsDaemon()
            .run();
#endif

    return 0;
}

int main() {
    uint16_t port = std::stoi(getenv("PORT"));
    LOG_DEBUG << port << " port";
    drogon::app()
            .setLogLevel(trantor::Logger::LogLevel::kTrace)
            .addListener("0.0.0.0", port)
            .setThreadNum(0)
            .enableBrotli(true)
            .enableSession(24h)
#if WIN32
            .run();
#else
            .enableRunAsDaemon()
            .run();
#endif

    return 0;
}

Brody•17mo ago

looks good now, does this start an http server?

Satan1cOP•17mo ago

yep I guess

Brody•17mo ago

you guess?

Satan1cOP•17mo ago

but strange that I don't see log about home controller... when I run it locally it shows it I've different logs locally and on railway locally I've no

20230714 15:24:01.086848 UTC 1 TRACE [run] Start to run... - HttpAppFrameworkImpl.cc:454
Initializing daemon mode

20230714 15:24:01.086848 UTC 1 TRACE [run] Start to run... - HttpAppFrameworkImpl.cc:454
Initializing daemon mode

logs I've that

20230714 15:21:43.439000 UTC 15128 DEBUG [main] 80 port - main.cc:7
20230714 15:21:43.630000 UTC 15128 DEBUG [HomeCtrl] Home constructor! - headers/HomeCtrl.h:18

20230714 15:21:43.439000 UTC 15128 DEBUG [main] 80 port - main.cc:7
20230714 15:21:43.630000 UTC 15128 DEBUG [HomeCtrl] Home constructor! - headers/HomeCtrl.h:18

Brody•17mo ago

why the enable run as deamon? when not on windows

Satan1cOP•17mo ago

locally I can't run daemon, but why I don't get "run" log idk

Brody•17mo ago

why do you want to run the deamon anywhere

Satan1cOP•17mo ago

wouldn't it be better that default run ? k, I'll try to run it normally on railway

Brody•17mo ago

I don't know, tell me the differences? I'm not a cpp dev

Satan1cOP•17mo ago

as I understand, daemon mode, is designed for background web-services so I guess it'll be better to run server as daemon

Brody•17mo ago

what makes you think you should run your app as a background service?

Satan1cOP•17mo ago

idk how on linux, but on windows background tasks runs in different priority of resources so I'd like that my app consume as small amount of them as it can

Brody•17mo ago

I see your thought process, but that's not quite how it works

Satan1cOP•17mo ago

that's like "child trauma" after ASP.NET, that allocating +-300-400mb RAM for empty project)

Brody•17mo ago

I mean that can be solved by simply not using languages and frameworks that are known to use a lot of resources

Satan1cOP•17mo ago

I've two main points to use cpp 1. is learn something new 2. create more efficient site, bot etc

Brody•17mo ago

what's the memory usage like for a cpp app that uses drogon?

Satan1cOP•17mo ago

I was interested in cpp few years ago, but chanse to "tuch" it came only now) for now, for empty app, +-3mb, I guess it'll about 20-50mb after I'll end with transfer from ASP

Brody•17mo ago

ay now that's awesome

Satan1cOP•17mo ago

in case of ASP, only runtime allocates +-100-150mb of RAM, other 100-200mb allocates to some ASP services just cuz of GC, app will allocate +-300-400 for long time, without clearing I tried to raise GC collections manually, and it clear up RAM back to 100-150 but by the time, ASP again creating lots of trash in case of cpp, and drogon, all memory clears immediately, an it doesn't need any runtime so app allocates as small amount of resources as it really needs

Brody•17mo ago

thats no fun

Satan1cOP•17mo ago

yep, I remove daemon mode and it runs fine

Brody•17mo ago

awsome!

Satan1cOP•17mo ago

thx for helping <3

Brody•17mo ago

enjoy the cheaper railway bills too!

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can't reach site runs on Drogon