178 lines
5.3 KiB
Groff
Executable File
178 lines
5.3 KiB
Groff
Executable File
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.\" ========================================================================
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.\"
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.IX Title "BIO_S_SOCKET 3"
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.TH BIO_S_SOCKET 3 "2020-03-02" "3.0.0-dev" "OpenSSL"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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BIO_s_socket, BIO_new_socket \- socket BIO
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 1
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\& #include <openssl/bio.h>
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\&
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\& const BIO_METHOD *BIO_s_socket(void);
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\&
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\& BIO *BIO_new_socket(int sock, int close_flag);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\fIBIO_s_socket()\fR returns the socket \s-1BIO\s0 method. This is a wrapper
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round the platform's socket routines.
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.PP
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\&\fIBIO_read_ex()\fR and \fIBIO_write_ex()\fR read or write the underlying socket.
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\&\fIBIO_puts()\fR is supported but \fIBIO_gets()\fR is not.
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.PP
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If the close flag is set then the socket is shut down and closed
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when the \s-1BIO\s0 is freed.
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.PP
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\&\fIBIO_new_socket()\fR returns a socket \s-1BIO\s0 using \fBsock\fR and \fBclose_flag\fR.
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.SH "NOTES"
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.IX Header "NOTES"
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Socket BIOs also support any relevant functionality of file descriptor
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BIOs.
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.PP
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The reason for having separate file descriptor and socket BIOs is that on some
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platforms sockets are not file descriptors and use distinct I/O routines,
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Windows is one such platform. Any code mixing the two will not work on
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all platforms.
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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\&\fIBIO_s_socket()\fR returns the socket \s-1BIO\s0 method.
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.PP
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\&\fIBIO_new_socket()\fR returns the newly allocated \s-1BIO\s0 or \s-1NULL\s0 is an error
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occurred.
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.SH "COPYRIGHT"
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.IX Header "COPYRIGHT"
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Copyright 2000\-2016 The OpenSSL Project Authors. All Rights Reserved.
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.PP
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Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file \s-1LICENSE\s0 in the source distribution or at
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<https://www.openssl.org/source/license.html>.
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