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Posted to dev@brpc.apache.org by GitBox <gi...@apache.org> on 2022/11/26 13:29:44 UTC
[GitHub] [incubator-brpc] yyweii opened a new pull request, #2019: ssl错误码问题
yyweii opened a new pull request, #2019:
URL: https://github.com/apache/incubator-brpc/pull/2019
> ERR_get_error() returns the earliest error code from the thread's error queue and removes the entry. This function can be called repeatedly until there are no more error codes to return.
据文档描述，ERR_get_error是会修改线程的错误码队列的，所以多次调用该函数，返回的值并不是同一个。
#1096 可能和这个问题有关。我司线上也有大量的“Fail to write into ssl_fd=, Success”的日志。这个Success可能是第二次调用ERR_get_error的返回值。
> SSL_get_error() returns a result code (suitable for the C "switch" statement) for a preceding call to SSL_connect(), SSL_accept(), SSL_do_handshake(), SSL_read_ex(), SSL_read(), SSL_peek_ex(), SSL_peek(), SSL_shutdown(), SSL_write_ex() or SSL_write() on ssl.
> In addition to ssl and ret, SSL_get_error() inspects the current thread's OpenSSL error queue. Thus, SSL_get_error() must be used in the same thread that performed the TLS/SSL I/O operation, and no other OpenSSL function calls should appear in between. The current thread's error queue must be empty before the TLS/SSL I/O operation is attempted, or SSL_get_error() will not work reliably.
在调用SSL_do_handshake、SSL_read、SSL_write之前最好是先调用ERR_clear_error，这样才能保证这些函数之后调用的SSL_get_error的返回值正确。
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[GitHub] [incubator-brpc] lorinlee merged pull request #2019: ssl错误码问题
Posted by GitBox <gi...@apache.org>.
lorinlee merged PR #2019:
URL: https://github.com/apache/incubator-brpc/pull/2019
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[GitHub] [incubator-brpc] wwbmmm commented on pull request #2019: ssl错误码问题
Posted by GitBox <gi...@apache.org>.
wwbmmm commented on PR #2019:
URL: https://github.com/apache/incubator-brpc/pull/2019#issuecomment-1328444529
LGTM
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