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Diffstat (limited to 'secure/lib/libcrypto/man/BIO_new_bio_pair.3')
| -rw-r--r-- | secure/lib/libcrypto/man/BIO_new_bio_pair.3 | 232 |
1 files changed, 0 insertions, 232 deletions
diff --git a/secure/lib/libcrypto/man/BIO_new_bio_pair.3 b/secure/lib/libcrypto/man/BIO_new_bio_pair.3 deleted file mode 100644 index d867de6..0000000 --- a/secure/lib/libcrypto/man/BIO_new_bio_pair.3 +++ /dev/null @@ -1,232 +0,0 @@ -.\" Automatically generated by Pod::Man version 1.15 -.\" Tue Jul 30 09:21:06 2002 -.\" -.\" Standard preamble: -.\" ====================================================================== -.de Sh \" Subsection heading -.br -.if t .Sp -.ne 5 -.PP -\fB\\$1\fR -.PP -.. -.de Sp \" Vertical space (when we can't use .PP) -.if t .sp .5v -.if n .sp -.. -.de Ip \" List item -.br -.ie \\n(.$>=3 .ne \\$3 -.el .ne 3 -.IP "\\$1" \\$2 -.. -.de Vb \" Begin verbatim text -.ft CW -.nf -.ne \\$1 -.. -.de Ve \" End verbatim text -.ft R - -.fi -.. -.\" Set up some character translations and predefined strings. \*(-- will -.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left -.\" double quote, and \*(R" will give a right double quote. | will give a -.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used -.\" to do unbreakable dashes and therefore won't be available. \*(C` and -.\" \*(C' expand to `' in nroff, nothing in troff, for use with C<> -.tr \(*W-|\(bv\*(Tr -.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' -.ie n \{\ -. ds -- \(*W- -. ds PI pi -. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch -. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch -. ds L" "" -. ds R" "" -. ds C` "" -. ds C' "" -'br\} -.el\{\ -. ds -- \|\(em\| -. ds PI \(*p -. ds L" `` -. ds R" '' -'br\} -.\" -.\" If the F register is turned on, we'll generate index entries on stderr -.\" for titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and -.\" index entries marked with X<> in POD. Of course, you'll have to process -.\" the output yourself in some meaningful fashion. -.if \nF \{\ -. de IX -. tm Index:\\$1\t\\n%\t"\\$2" -.. -. nr % 0 -. rr F -.\} -.\" -.\" For nroff, turn off justification. Always turn off hyphenation; it -.\" makes way too many mistakes in technical documents. -.hy 0 -.if n .na -.\" -.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). -.\" Fear. Run. Save yourself. 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It has two endpoints between -data can be buffered. Its typical use is to connect one endpoint as underlying -input/output \s-1BIO\s0 to an \s-1SSL\s0 and access the other one controlled by the program -instead of accessing the network connection directly. -.PP -The two new BIOs \fBbio1\fR and \fBbio2\fR are symmetric with respect to their -functionality. The size of their buffers is determined by \fBwritebuf1\fR and -\&\fBwritebuf2\fR. If the size give is 0, the default size is used. -.PP -\&\fIBIO_new_bio_pair()\fR does not check whether \fBbio1\fR or \fBbio2\fR do point to -some other \s-1BIO\s0, the values are overwritten, \fIBIO_free()\fR is not called. -.PP -The two BIOs, even though forming a \s-1BIO\s0 pair and must be \fIBIO_free()\fR'ed -separately. This can be of importance, as some SSL-functions like \fISSL_set_bio()\fR -or \fISSL_free()\fR call \fIBIO_free()\fR implicitly, so that the peer-BIO is left -untouched and must also be \fIBIO_free()\fR'ed. -.SH "EXAMPLE" -.IX Header "EXAMPLE" -The \s-1BIO\s0 pair can be used to have full control over the network access of an -application. The application can call \fIselect()\fR on the socket as required -without having to go through the SSL-interface. -.PP -.Vb 6 -\& BIO *internal_bio, *network_bio; -\& ... -\& BIO_new_bio_pair(internal_bio, 0, network_bio, 0); -\& SSL_set_bio(ssl, internal_bio); -\& SSL_operations(); -\& ... -.Ve -.Vb 9 -\& application | TLS-engine -\& | | -\& +----------> SSL_operations() -\& | /\e || -\& | || \e/ -\& | BIO-pair (internal_bio) -\& +----------< BIO-pair (network_bio) -\& | | -\& socket | -.Ve -.Vb 4 -\& ... -\& SSL_free(ssl); /* implicitly frees internal_bio */ -\& BIO_free(network_bio); -\& ... -.Ve -As the \s-1BIO\s0 pair will only buffer the data and never directly access the -connection, it behaves non-blocking and will return as soon as the write -buffer is full or the read buffer is drained. Then the application has to -flush the write buffer and/or fill the read buffer. -.PP -Use the \fIBIO_ctrl_pending()\fR, to find out whether data is buffered in the \s-1BIO\s0 -and must be transfered to the network. Use \fIBIO_ctrl_get_read_request()\fR to -find out, how many bytes must be written into the buffer before the -\&\fISSL_operation()\fR can successfully be continued. -.SH "IMPORTANT" -.IX Header "IMPORTANT" -As the data is buffered, \fISSL_operation()\fR may return with a \s-1ERROR_SSL_WANT_READ\s0 -condition, but there is still data in the write buffer. An application must -not rely on the error value of \fISSL_operation()\fR but must assure that the -write buffer is always flushed first. Otherwise a deadlock may occur as -the peer might be waiting for the data before being able to continue. -.SH "RETURN VALUES" -.IX Header "RETURN VALUES" -The following return values can occur: -.Ip "1" 4 -.IX Item "1" -The \s-1BIO\s0 pair was created successfully. The new BIOs are available in -\&\fBbio1\fR and \fBbio2\fR. -.Ip "0" 4 -The operation failed. The \s-1NULL\s0 pointer is stored into the locations for -\&\fBbio1\fR and \fBbio2\fR. Check the error stack for more information. -.SH "SEE ALSO" -.IX Header "SEE ALSO" -SSL_set_bio(3), ssl(3), bio(3), -BIO_ctrl_pending(3), -BIO_ctrl_get_read_request(3) |
