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SSL: workaround for incorrect SSL_write() errors in OpenSSL 1.1.1.
OpenSSL 1.1.1 fails to return SSL_ERROR_SYSCALL if an error happens
during SSL_write() after close_notify alert from the peer, and returns
SSL_ERROR_ZERO_RETURN instead. Broken by this commit, which removes
the "i == 0" check around the SSL_RECEIVED_SHUTDOWN one:
https://git.openssl.org/?p=openssl.git;a=commitdiff;h=8051ab2
In particular, if a client closed the connection without reading
the response but with properly sent close_notify alert, this resulted in
unexpected "SSL_write() failed while ..." critical log message instead
of correct "SSL_write() failed (32: Broken pipe)" at the info level.
Since SSL_ERROR_ZERO_RETURN cannot be legitimately returned after
SSL_write(), the fix is to convert all SSL_ERROR_ZERO_RETURN errors
after SSL_write() to SSL_ERROR_SYSCALL.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Wed, 16 Sep 2020 18:26:22 +0300 |
| parents | f303f3e43f7b |
| children | 1bc938b270dc |
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VER= $(shell grep 'define NGINX_VERSION' src/core/nginx.h \ | sed -e 's/^.*"\(.*\)".*/\1/') NGINX= nginx-$(VER) TEMP= tmp XSLS?= xslscript.pl all: changes changes: $(TEMP)/$(NGINX)/CHANGES.ru \ $(TEMP)/$(NGINX)/CHANGES $(TEMP)/$(NGINX)/CHANGES.ru: docs/dtd/changes.dtd \ docs/xml/nginx/changes.xml \ docs/xml/change_log_conf.xml \ docs/xslt/changes.xslt mkdir -p $(TEMP)/$(NGINX) xmllint --noout --valid docs/xml/nginx/changes.xml xsltproc --stringparam lang ru \ -o $@ docs/xslt/changes.xslt docs/xml/nginx/changes.xml $(TEMP)/$(NGINX)/CHANGES: docs/dtd/changes.dtd \ docs/xml/nginx/changes.xml \ docs/xml/change_log_conf.xml \ docs/xslt/changes.xslt mkdir -p $(TEMP)/$(NGINX) xmllint --noout --valid docs/xml/nginx/changes.xml xsltproc --stringparam lang en \ -o $@ docs/xslt/changes.xslt docs/xml/nginx/changes.xml docs/xslt/changes.xslt: docs/xsls/changes.xsls $(XSLS) -o $@ $<