|From:||Nguyen Xuan Viet|
|Subject:||Re: [libmicrohttpd] Problem send large trunk of data over upgraded connection with epoll and https enabled|
|Date:||Fri, 18 Sep 2020 10:26:17 +0700|
|User-agent:||Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0|
I'm sorry but this bug still happen on latest version of this
The "test_upgrade_large_tls" still hangs with very large data send over the upgraded connection.
We can reproduce this issue by increase "LARGE_STRING" and/or "LARGE_REPLY_STRING" size to a huge string, for example duplicate current "Hello..." string to 41 lines or more.
This issue only happens with EPOLL + HTTPS, for other cases, it
Could you please check this issue for me?
Dear Christian, Thanks for your reply. I'm very happy to hear your information. I will continue to work with your latest source in the future. Best regards, VietOn 30/07/2019 01:04, Christian Grothoff wrote:
Dear Viet, Thanks for the additional details. With your report, I was able to reproduce the issue (test_upgrade_large.c added) and fix it in bafd078984be5f846287107824eca99e6c6c42cc. Happy hacking! Christian On 6/24/19 7:16 PM, Việt Nguyễn Xuân wrote:Hi all, Sorry, I cannot reply your email, so I reply it here. I'm sorry, for the moment I cannot provide the code for you. But you can reproduce the issue by modify the src/microhttpd/test_upgrade.c, set the connection memory limit to a very low value, for example 512, this change should be made for HTTPS section. In the function "run_usock" and "run_usock_client", please replace the test string "Hello World" by a real larger string with length about 160 - 170 bytes. After that do a make check and you will see the test_upgrade_tls test hang forever. Thanks, Best regards, Viet ------------------------------------------------------------------------ *From:* Việt Nguyễn Xuân *Sent:* Sunday, June 23, 2019 11:28 AM *To:* email@example.com *Subject:* [libmicrohttpd]Problem send large trunk of data over upgraded connection with epoll and https enabled Hi All, I'm using libmicrohttpd to implement a WebSocket server based on HTTP Upgrade connection. I'm using latest git revision of this library for my work. Everything works well for small message passes over upgraded connection, I tested with Chrome and Firefox browsers and they are all Ok. But I have a trouble when sending large trunk of message to the server, if the size of message is larger than 1/3 connection buffer size, it's very often that this message will be queued for next send or is not sent at all. For smaller messages, they will be sent and received immediately. This issue only happens when I enable HTTPs combine with EPOLL internal thread, for other combination it seems that this issue does not happen. For example I can send large message normally with HTTPS + POLL internal thread or with HTTP + EPOLL internal thread. Could you please check this issue for me? Thanks a lot. Viet
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