A C library for asynchronous DNS requests (grpc依赖)
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#ifndef HEADER_CARES_WRITEV_H
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#define HEADER_CARES_WRITEV_H
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/* Copyright 1998 by the Massachusetts Institute of Technology.
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*
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* Permission to use, copy, modify, and distribute this
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* software and its documentation for any purpose and without
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* fee is hereby granted, provided that the above copyright
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* notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting
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* documentation, and that the name of M.I.T. not be used in
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* advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission.
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* M.I.T. makes no representations about the suitability of
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* this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*/
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#include "ares_setup.h"
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#include "ares.h"
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#ifndef HAVE_WRITEV
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/* Structure for scatter/gather I/O. */
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struct iovec
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{
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void *iov_base; /* Pointer to data. */
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size_t iov_len; /* Length of data. */
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};
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extern ssize_t ares_writev(ares_socket_t s, const struct iovec *iov, int iovcnt);
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#endif
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#endif /* HEADER_CARES_WRITEV_H */
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