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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>
This commit is contained in:
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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2
trunk/src/core/srs_core_version5.hpp
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@ -9,6 +9,6 @@
#define VERSION_MAJOR 5
#define VERSION_MINOR 0
#define VERSION_REVISION 155
#define VERSION_REVISION 156
#endif

2
trunk/src/core/srs_core_version6.hpp
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@ -9,6 +9,6 @@
#define VERSION_MAJOR 6
#define VERSION_MINOR 0
#define VERSION_REVISION 46
#define VERSION_REVISION 47
#endif