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DTLS: Use bio callback to get fragment packet. v5.0.156, v6.0.47 (#3565)

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1. The MTU is effective, with the certificate being split into two DTLS records to comply with the limit.
2. The issue occurs when using BIO_get_mem_data, which retrieves all DTLS packets in a single call, even though each is smaller than the MTU.
3. An alternative callback is available for using BIO_new with BIO_s_mem.
4. Improvements to the MTU setting were made, including adding the DTLS_set_link_mtu function and removing the SSL_set_max_send_fragment function.
5. The handshake process was refined, calling SSL_do_handshake only after ICE completion, and using SSL_read to handle handshake messages.
6. The session close code was improved to enable immediate closure upon receiving an SSL CloseNotify or fatal message.

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Co-authored-by: chundonglinlin <chundonglinlin@163.com>
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Winlin 2023-06-05 10:39:41 +08:00 • committed by winlin
parent 27f9db9762
commit 104cf14d68
6 changed files with 156 additions and 263 deletions
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trunk/doc/CHANGELOG.md
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@ -8,6 +8,7 @@ The changelog for SRS.
## SRS 6.0 Changelog
* v6.0, 2023-06-05, Merge [#3565](https://github.com/ossrs/srs/pull/3565): DTLS: Use bio callback to get fragment packet. v6.0.47 (#3565)
* v6.0, 2023-05-29, Merge [#3513](https://github.com/ossrs/srs/pull/3513): SSL: Fix SSL_get_error get the error of other coroutine. v6.0.46 (#3513)
* v6.0, 2023-05-14, Merge [#3534](https://github.com/ossrs/srs/pull/3534): Replace sprintf with snprintf to eliminate compile warnings. v6.0.45 (#3534)
* v6.0, 2023-05-13, Merge [#3541](https://github.com/ossrs/srs/pull/3541): asan: Fix memory leak in asan by releasing global IPs when run_directly_or_daemon fails. v6.0.44 (#3541)
@ -60,6 +61,7 @@ The changelog for SRS.
## SRS 5.0 Changelog
* v5.0, 2023-06-05, Merge [#3565](https://github.com/ossrs/srs/pull/3565): DTLS: Use bio callback to get fragment packet. v5.0.156 (#3565)
* v5.0, 2023-05-29, Merge [#3513](https://github.com/ossrs/srs/pull/3513): SSL: Fix SSL_get_error get the error of other coroutine. v5.0.155 (#3513)
* v5.0, 2023-05-13, Merge [#3541](https://github.com/ossrs/srs/pull/3541): asan: Fix memory leak in asan by releasing global IPs when run_directly_or_daemon fails. v5.0.154 (#3541)
* v5.0, 2023-05-12, Merge [#3539](https://github.com/ossrs/srs/pull/3539): WHIP: Improve HTTP DELETE for notifying server unpublish event. v5.0.153 (#3539)