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Asked: 2024-09-25T11:23:46+05:30 In:

I’m experiencing problems with using curl on Ubuntu 24.04. Whenever I attempt to use it, I get a “recv failure: Connection reset by peer” error. I’ve checked my network settings and ensured that my internet connection is stable, but the issue persists. Has anyone encountered this problem and can offer suggestions for troubleshooting or resolving it? Thank you!

I’ve been running into this really frustrating issue with curl on Ubuntu 24.04, and it’s driving me a bit nuts. So, here’s the thing: every time I try to use curl to fetch data from a URL, I get this error that says “recv failure: Connection reset by peer.” I’m not sure what it means exactly, but it sounds like something isn’t playing nice on the network side of things.

I’ve checked my internet connection, and everything seems solid. I can browse the web without issues, and other tools like ping and wget are working just fine. It’s only in curl that I get this annoying error. I even tried different URLs, thinking it might be a server-side issue, but nope, I get the same error message across multiple sites.

I’ve read a bit online and saw recommendations to tweak some configurations, like adjusting the TCP settings or checking for firewall rules that might be blocking the connection, but nothing has worked so far. Also, I wondered if it might be specific to the version of curl I’m using, but I updated it to the latest version available in the repositories, and the problem persists.

Has anyone else faced this issue? I really want to know if there’s something simple that I’m missing or if there are any particular logs or commands that might help diagnose the problem better. If you have any tips or tricks up your sleeve for troubleshooting curl problems, I’d love to hear them. I found some threads on similar problems, but no one seems to have a definitive solution.

It’s kind of annoying because I rely on curl for some scripting tasks I’ve set up, and being stuck on this error is slowing me down. So, if you’ve dealt with this or have any ideas, please drop a response! I’m all ears for anything that might help solve this issue. Thanks in advance!

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    2 Answers



    1. curl Connection Reset Issue

      The “recv failure: Connection reset by peer” error you are encountering with curl typically indicates that the remote server is closing the connection unexpectedly. This can happen for a variety of reasons, including server-side restrictions, session timeouts, or network configuration issues. Since you’ve confirmed that your internet connection is stable with other tools like ping and wget functioning normally, it’s essential to investigate any potential compatibility issues with curl, especially if you have updated it to the latest version. You might also want to check the server’s response headers using a tool like telnet or nc to see if there are any clues about the connection reset happening at the server end.

      curl -v can provide verbose output that may help you understand at which point the connection is being reset. You could also try adjusting curl’s timeout settings with --connect-timeout or --max-time to see if that impacts connectivity. If the problem persists across multiple URLs, it could indeed be related to the way certain servers are configured to handle requests, especially if they employ security settings like rate limiting or IP blocking. As a last resort, capturing network traffic with tools like tcpdump or Wireshark can provide deeper insights into the connection attempts and failures.


    2. Frustrating curl Issue on Ubuntu 24.04

      Sounds like you’re having a rough time with curl! That “recv failure: Connection reset by peer” can be super annoying. Since you’ve already checked your internet and other tools like ping and wget work fine, that helps narrow it down a bit.

      Here are a few things you might wanna try:

      • Check if there’s a firewall issue: Sometimes, the firewall might block curl. You can check your firewall rules with:
        sudo ufw status
      • Try adding the -v flag: Running curl with curl -v your-url-here can give you more details about the request and where it’s failing.
      • Check DNS settings: Sometimes weird DNS settings can cause issues. Try flushing your DNS cache with:
        sudo systemd-resolve --flush-caches
      • TCP settings adjustment: If you want to play around with TCP settings, you could try:

        sysctl -w net.ipv4.tcp_retries2=5

        Just remember to reset it back to default afterward!

      • Look at curl logs: You could check logs for more clues. Try:
        journalctl -u systemd-resolved or check the syslog with cat /var/log/syslog.

      Also, have you confirmed you’re using the latest version of curl? You can check that with curl --version. If it’s still acting up, maybe try reinstalling it:

        sudo apt remove curl
  sudo apt install curl

      Hopefully, one of these tips helps! If you find anything odd in those logs, it might point you in the right direction. Just keep experimenting, and don’t lose hope! Curl can be a bit finicky.


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