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BIO_S_SOCKET(3) OpenSSL BIO_S_SOCKET(3)
 

BIO_s_socket, BIO_new_socket - socket BIO

 #include <openssl/bio.h>
 const BIO_METHOD *BIO_s_socket(void);
 BIO *BIO_new_socket(int sock, int close_flag);

BIO_s_socket() returns the socket BIO method. This is a wrapper round the platform's socket routines.
BIO_read_ex() and BIO_write_ex() read or write the underlying socket. BIO_puts() is supported but BIO_gets() is not.
If the close flag is set then the socket is shut down and closed when the BIO is freed.
BIO_new_socket() returns a socket BIO using sock and close_flag.

Socket BIOs also support any relevant functionality of file descriptor BIOs.
The reason for having separate file descriptor and socket BIOs is that on some platforms sockets are not file descriptors and use distinct I/O routines, Windows is one such platform. Any code mixing the two will not work on all platforms.

BIO_s_socket() returns the socket BIO method.
BIO_new_socket() returns the newly allocated BIO or NULL is an error occurred.

Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.
2018-11-20 1.1.1a

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