/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.

*

* Permission is hereby granted, free of charge, to any person obtaining a copy

* of this software and associated documentation files (the "Software"), to

* deal in the Software without restriction, including without limitation the

* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

* sell copies of the Software, and to permit persons to whom the Software is

* furnished to do so, subject to the following conditions:

*

* The above copyright notice and this permission notice shall be included in

* all copies or substantial portions of the Software.

*

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

* IN THE SOFTWARE.

*/

/* See https://github.com/libuv/libuv#documentation for documentation. */

#ifndef UV_H

#define UV_H

#ifdef __cplusplus

extern "C" {

#endif

#if defined(BUILDING_UV_SHARED) && defined(USING_UV_SHARED)

#error "Define either BUILDING_UV_SHARED or USING_UV_SHARED, not both."

#endif

#ifndef UV_EXTERN

#ifdef _WIN32

/* Windows - set up dll import/export decorators. */

# if defined(BUILDING_UV_SHARED)

/* Building shared library. */

# define UV_EXTERN __declspec(dllexport)

# elif defined(USING_UV_SHARED)

/* Using shared library. */

# define UV_EXTERN __declspec(dllimport)

# else

/* Building static library. */

# define UV_EXTERN /* nothing */

# endif

#elif __GNUC__ >= 4

# define UV_EXTERN __attribute__((visibility("default")))

#elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550) /* Sun Studio >= 8 */

# define UV_EXTERN __global

#else

# define UV_EXTERN /* nothing */

#endif

#endif /* UV_EXTERN */

#include "uv/errno.h"

#include "uv/version.h"

#include <stddef.h>

#include <stdio.h>

#include <stdint.h>

#include <math.h>

/* Internal type, do not use. */

struct uv__queue {

struct uv__queue* next;

struct uv__queue* prev;

};

#if defined(_WIN32)

# include "uv/win.h"

#else

# include "uv/unix.h"

#endif

/* Expand this list if necessary. */

#define UV_ERRNO_MAP(XX) \

XX(E2BIG, "argument list too long") \

XX(EACCES, "permission denied") \

XX(EADDRINUSE, "address already in use") \

XX(EADDRNOTAVAIL, "address not available") \

XX(EAFNOSUPPORT, "address family not supported") \

XX(EAGAIN, "resource temporarily unavailable") \

XX(EAI_ADDRFAMILY, "address family not supported") \

XX(EAI_AGAIN, "temporary failure") \

XX(EAI_BADFLAGS, "bad ai_flags value") \

XX(EAI_BADHINTS, "invalid value for hints") \

XX(EAI_CANCELED, "request canceled") \

XX(EAI_FAIL, "permanent failure") \

XX(EAI_FAMILY, "ai_family not supported") \

XX(EAI_MEMORY, "out of memory") \

XX(EAI_NODATA, "no address") \

XX(EAI_NONAME, "unknown node or service") \

XX(EAI_OVERFLOW, "argument buffer overflow") \

XX(EAI_PROTOCOL, "resolved protocol is unknown") \

XX(EAI_SERVICE, "service not available for socket type") \

XX(EAI_SOCKTYPE, "socket type not supported") \

XX(EALREADY, "connection already in progress") \

XX(EBADF, "bad file descriptor") \

XX(EBUSY, "resource busy or locked") \

XX(ECANCELED, "operation canceled") \

XX(ECHARSET, "invalid Unicode character") \

XX(ECONNABORTED, "software caused connection abort") \

XX(ECONNREFUSED, "connection refused") \

XX(ECONNRESET, "connection reset by peer") \

XX(EDESTADDRREQ, "destination address required") \

XX(EEXIST, "file already exists") \

XX(EFAULT, "bad address in system call argument") \

XX(EFBIG, "file too large") \

XX(EHOSTUNREACH, "host is unreachable") \

XX(EINTR, "interrupted system call") \

XX(EINVAL, "invalid argument") \

XX(EIO, "i/o error") \

XX(EISCONN, "socket is already connected") \

XX(EISDIR, "illegal operation on a directory") \

XX(ELOOP, "too many symbolic links encountered") \

XX(EMFILE, "too many open files") \

XX(EMSGSIZE, "message too long") \

XX(ENAMETOOLONG, "name too long") \

XX(ENETDOWN, "network is down") \

XX(ENETUNREACH, "network is unreachable") \

XX(ENFILE, "file table overflow") \

XX(ENOBUFS, "no buffer space available") \

XX(ENODEV, "no such device") \

XX(ENOENT, "no such file or directory") \

XX(ENOMEM, "not enough memory") \

XX(ENONET, "machine is not on the network") \

XX(ENOPROTOOPT, "protocol not available") \

XX(ENOSPC, "no space left on device") \

XX(ENOSYS, "function not implemented") \

XX(ENOTCONN, "socket is not connected") \

XX(ENOTDIR, "not a directory") \

XX(ENOTEMPTY, "directory not empty") \

XX(ENOTSOCK, "socket operation on non-socket") \

XX(ENOTSUP, "operation not supported on socket") \

XX(EOVERFLOW, "value too large for defined data type") \

XX(EPERM, "operation not permitted") \

XX(EPIPE, "broken pipe") \

XX(EPROTO, "protocol error") \

XX(EPROTONOSUPPORT, "protocol not supported") \

XX(EPROTOTYPE, "protocol wrong type for socket") \

XX(ERANGE, "result too large") \

XX(EROFS, "read-only file system") \

XX(ESHUTDOWN, "cannot send after transport endpoint shutdown") \

XX(ESPIPE, "invalid seek") \

XX(ESRCH, "no such process") \

XX(ETIMEDOUT, "connection timed out") \

XX(ETXTBSY, "text file is busy") \

XX(EXDEV, "cross-device link not permitted") \

XX(UNKNOWN, "unknown error") \

XX(EOF, "end of file") \

XX(ENXIO, "no such device or address") \

XX(EMLINK, "too many links") \

XX(EHOSTDOWN, "host is down") \

XX(EREMOTEIO, "remote I/O error") \

XX(ENOTTY, "inappropriate ioctl for device") \

XX(EFTYPE, "inappropriate file type or format") \

XX(EILSEQ, "illegal byte sequence") \

XX(ESOCKTNOSUPPORT, "socket type not supported") \

XX(ENODATA, "no data available") \

XX(EUNATCH, "protocol driver not attached") \

XX(ENOEXEC, "exec format error") \

#define UV_HANDLE_TYPE_MAP(XX) \

XX(ASYNC, async) \

XX(CHECK, check) \

XX(FS_EVENT, fs_event) \

XX(FS_POLL, fs_poll) \

XX(HANDLE, handle) \

XX(IDLE, idle) \

XX(NAMED_PIPE, pipe) \

XX(POLL, poll) \

XX(PREPARE, prepare) \

XX(PROCESS, process) \

XX(STREAM, stream) \

XX(TCP, tcp) \

XX(TIMER, timer) \

XX(TTY, tty) \

XX(UDP, udp) \

XX(SIGNAL, signal) \

#define UV_REQ_TYPE_MAP(XX) \

XX(REQ, req) \

XX(CONNECT, connect) \

XX(WRITE, write) \

XX(SHUTDOWN, shutdown) \

XX(UDP_SEND, udp_send) \

XX(FS, fs) \

XX(WORK, work) \

XX(GETADDRINFO, getaddrinfo) \

XX(GETNAMEINFO, getnameinfo) \

XX(RANDOM, random) \

typedef enum {

#define XX(code, _) UV_ ## code = UV__ ## code,

UV_ERRNO_MAP(XX)

#undef XX

UV_ERRNO_MAX = UV__EOF - 1

} uv_errno_t;

typedef enum {

UV_UNKNOWN_HANDLE = 0,

#define XX(uc, lc) UV_##uc,

UV_HANDLE_TYPE_MAP(XX)

#undef XX

UV_FILE,

UV_HANDLE_TYPE_MAX

} uv_handle_type;

typedef enum {

UV_UNKNOWN_REQ = 0,

#define XX(uc, lc) UV_##uc,

UV_REQ_TYPE_MAP(XX)

#undef XX

UV_REQ_TYPE_PRIVATE

UV_REQ_TYPE_MAX

} uv_req_type;

/* Handle types. */

typedef struct uv_loop_s uv_loop_t;

typedef struct uv_handle_s uv_handle_t;

typedef struct uv_dir_s uv_dir_t;

typedef struct uv_stream_s uv_stream_t;

typedef struct uv_tcp_s uv_tcp_t;

typedef struct uv_udp_s uv_udp_t;

typedef struct uv_pipe_s uv_pipe_t;

typedef struct uv_tty_s uv_tty_t;

typedef struct uv_poll_s uv_poll_t;

typedef struct uv_timer_s uv_timer_t;

typedef struct uv_prepare_s uv_prepare_t;

typedef struct uv_check_s uv_check_t;

typedef struct uv_idle_s uv_idle_t;

typedef struct uv_async_s uv_async_t;

typedef struct uv_process_s uv_process_t;

typedef struct uv_fs_event_s uv_fs_event_t;

typedef struct uv_fs_poll_s uv_fs_poll_t;

typedef struct uv_signal_s uv_signal_t;

/* Request types. */

typedef struct uv_req_s uv_req_t;

typedef struct uv_getaddrinfo_s uv_getaddrinfo_t;

typedef struct uv_getnameinfo_s uv_getnameinfo_t;

typedef struct uv_shutdown_s uv_shutdown_t;

typedef struct uv_write_s uv_write_t;

typedef struct uv_connect_s uv_connect_t;

typedef struct uv_udp_send_s uv_udp_send_t;

typedef struct uv_fs_s uv_fs_t;

typedef struct uv_work_s uv_work_t;

typedef struct uv_random_s uv_random_t;

/* None of the above. */

typedef struct uv_env_item_s uv_env_item_t;

typedef struct uv_cpu_info_s uv_cpu_info_t;

typedef struct uv_interface_address_s uv_interface_address_t;

typedef struct uv_dirent_s uv_dirent_t;

typedef struct uv_passwd_s uv_passwd_t;

typedef struct uv_group_s uv_group_t;

typedef struct uv_utsname_s uv_utsname_t;

typedef struct uv_statfs_s uv_statfs_t;

typedef struct uv_metrics_s uv_metrics_t;

typedef enum {

UV_LOOP_BLOCK_SIGNAL = 0,

UV_METRICS_IDLE_TIME,

UV_LOOP_USE_IO_URING_SQPOLL

#define UV_LOOP_USE_IO_URING_SQPOLL UV_LOOP_USE_IO_URING_SQPOLL

} uv_loop_option;

typedef enum {

UV_RUN_DEFAULT = 0,

UV_RUN_ONCE,

UV_RUN_NOWAIT

} uv_run_mode;

UV_EXTERN unsigned int uv_version(void);

UV_EXTERN const char* uv_version_string(void);

typedef void* (*uv_malloc_func)(size_t size);

typedef void* (*uv_realloc_func)(void* ptr, size_t size);

typedef void* (*uv_calloc_func)(size_t count, size_t size);

typedef void (*uv_free_func)(void* ptr);

UV_EXTERN void uv_library_shutdown(void);

UV_EXTERN int uv_replace_allocator(uv_malloc_func malloc_func,

uv_realloc_func realloc_func,

uv_calloc_func calloc_func,

uv_free_func free_func);

UV_EXTERN uv_loop_t* uv_default_loop(void);

UV_EXTERN int uv_loop_init(uv_loop_t* loop);

UV_EXTERN int uv_loop_close(uv_loop_t* loop);

/*

* NOTE:

* This function is DEPRECATED, users should

* allocate the loop manually and use uv_loop_init instead.

*/

UV_EXTERN uv_loop_t* uv_loop_new(void);

/*

* NOTE:

* This function is DEPRECATED. Users should use

* uv_loop_close and free the memory manually instead.

*/

UV_EXTERN void uv_loop_delete(uv_loop_t*);

UV_EXTERN size_t uv_loop_size(void);

UV_EXTERN int uv_loop_alive(const uv_loop_t* loop);

UV_EXTERN int uv_loop_configure(uv_loop_t* loop, uv_loop_option option, ...);

UV_EXTERN int uv_loop_fork(uv_loop_t* loop);

UV_EXTERN int uv_run(uv_loop_t*, uv_run_mode mode);

UV_EXTERN void uv_stop(uv_loop_t*);

UV_EXTERN void uv_ref(uv_handle_t*);

UV_EXTERN void uv_unref(uv_handle_t*);

UV_EXTERN int uv_has_ref(const uv_handle_t*);

UV_EXTERN void uv_update_time(uv_loop_t*);

UV_EXTERN uint64_t uv_now(const uv_loop_t*);

UV_EXTERN int uv_backend_fd(const uv_loop_t*);

UV_EXTERN int uv_backend_timeout(const uv_loop_t*);

typedef void (*uv_alloc_cb)(uv_handle_t* handle,

size_t suggested_size,

uv_buf_t* buf);

typedef void (*uv_read_cb)(uv_stream_t* stream,

ssize_t nread,

const uv_buf_t* buf);

typedef void (*uv_write_cb)(uv_write_t* req, int status);

typedef void (*uv_connect_cb)(uv_connect_t* req, int status);

typedef void (*uv_shutdown_cb)(uv_shutdown_t* req, int status);

typedef void (*uv_connection_cb)(uv_stream_t* server, int status);

typedef void (*uv_close_cb)(uv_handle_t* handle);

typedef void (*uv_poll_cb)(uv_poll_t* handle, int status, int events);

typedef void (*uv_timer_cb)(uv_timer_t* handle);

typedef void (*uv_async_cb)(uv_async_t* handle);

typedef void (*uv_prepare_cb)(uv_prepare_t* handle);

typedef void (*uv_check_cb)(uv_check_t* handle);

typedef void (*uv_idle_cb)(uv_idle_t* handle);

typedef void (*uv_exit_cb)(uv_process_t*, int64_t exit_status, int term_signal);

typedef void (*uv_walk_cb)(uv_handle_t* handle, void* arg);

typedef void (*uv_fs_cb)(uv_fs_t* req);

typedef void (*uv_work_cb)(uv_work_t* req);

typedef void (*uv_after_work_cb)(uv_work_t* req, int status);

typedef void (*uv_getaddrinfo_cb)(uv_getaddrinfo_t* req,

int status,

struct addrinfo* res);

typedef void (*uv_getnameinfo_cb)(uv_getnameinfo_t* req,

int status,

const char* hostname,

const char* service);

typedef void (*uv_random_cb)(uv_random_t* req,

int status,

void* buf,

size_t buflen);

typedef enum {

UV_CLOCK_MONOTONIC,

UV_CLOCK_REALTIME

} uv_clock_id;

/* XXX(bnoordhuis) not 2038-proof, https://github.com/libuv/libuv/issues/3864 */

typedef struct {

long tv_sec;

long tv_nsec;

} uv_timespec_t;

typedef struct {

int64_t tv_sec;

int32_t tv_nsec;

} uv_timespec64_t;

/* XXX(bnoordhuis) not 2038-proof, https://github.com/libuv/libuv/issues/3864 */

typedef struct {

long tv_sec;

long tv_usec;

} uv_timeval_t;

typedef struct {

int64_t tv_sec;

int32_t tv_usec;

} uv_timeval64_t;

typedef struct {

uint64_t st_dev;

uint64_t st_mode;

uint64_t st_nlink;

uint64_t st_uid;

uint64_t st_gid;

uint64_t st_rdev;

uint64_t st_ino;

uint64_t st_size;

uint64_t st_blksize;

uint64_t st_blocks;

uint64_t st_flags;

uint64_t st_gen;

uv_timespec_t st_atim;

uv_timespec_t st_mtim;

uv_timespec_t st_ctim;

uv_timespec_t st_birthtim;

} uv_stat_t;

typedef void (*uv_fs_event_cb)(uv_fs_event_t* handle,

const char* filename,

int events,

int status);

typedef void (*uv_fs_poll_cb)(uv_fs_poll_t* handle,

int status,

const uv_stat_t* prev,

const uv_stat_t* curr);

typedef void (*uv_signal_cb)(uv_signal_t* handle, int signum);

typedef enum {

UV_LEAVE_GROUP = 0,

UV_JOIN_GROUP

} uv_membership;

UV_EXTERN int uv_translate_sys_error(int sys_errno);

UV_EXTERN const char* uv_strerror(int err);

UV_EXTERN char* uv_strerror_r(int err, char* buf, size_t buflen);

UV_EXTERN const char* uv_err_name(int err);

UV_EXTERN char* uv_err_name_r(int err, char* buf, size_t buflen);

#define UV_REQ_FIELDS \

/* public */ \

void* data; \

/* read-only */ \

uv_req_type type; \

/* private */ \

void* reserved[6]; \

UV_REQ_PRIVATE_FIELDS \

/* Abstract base class of all requests. */

struct uv_req_s {

UV_REQ_FIELDS

};

/* Platform-specific request types. */

UV_PRIVATE_REQ_TYPES

UV_EXTERN int uv_shutdown(uv_shutdown_t* req,

uv_stream_t* handle,

uv_shutdown_cb cb);

struct uv_shutdown_s {

UV_REQ_FIELDS

uv_stream_t* handle;

uv_shutdown_cb cb;

UV_SHUTDOWN_PRIVATE_FIELDS

};

#define UV_HANDLE_FIELDS \

/* public */ \

void* data; \

/* read-only */ \

uv_loop_t* loop; \

uv_handle_type type; \

/* private */ \

uv_close_cb close_cb; \

struct uv__queue handle_queue; \

union { \

int fd; \

void* reserved[4]; \

} u; \

UV_HANDLE_PRIVATE_FIELDS \

/* The abstract base class of all handles. */

struct uv_handle_s {

UV_HANDLE_FIELDS

};

UV_EXTERN size_t uv_handle_size(uv_handle_type type);

UV_EXTERN uv_handle_type uv_handle_get_type(const uv_handle_t* handle);

UV_EXTERN const char* uv_handle_type_name(uv_handle_type type);

UV_EXTERN void* uv_handle_get_data(const uv_handle_t* handle);

UV_EXTERN uv_loop_t* uv_handle_get_loop(const uv_handle_t* handle);

UV_EXTERN void uv_handle_set_data(uv_handle_t* handle, void* data);

UV_EXTERN size_t uv_req_size(uv_req_type type);

UV_EXTERN void* uv_req_get_data(const uv_req_t* req);

UV_EXTERN void uv_req_set_data(uv_req_t* req, void* data);

UV_EXTERN uv_req_type uv_req_get_type(const uv_req_t* req);

UV_EXTERN const char* uv_req_type_name(uv_req_type type);

UV_EXTERN int uv_is_active(const uv_handle_t* handle);

UV_EXTERN void uv_walk(uv_loop_t* loop, uv_walk_cb walk_cb, void* arg);

/* Helpers for ad hoc debugging, no API/ABI stability guaranteed. */

UV_EXTERN void uv_print_all_handles(uv_loop_t* loop, FILE* stream);

UV_EXTERN void uv_print_active_handles(uv_loop_t* loop, FILE* stream);

UV_EXTERN void uv_close(uv_handle_t* handle, uv_close_cb close_cb);

UV_EXTERN int uv_send_buffer_size(uv_handle_t* handle, int* value);

UV_EXTERN int uv_recv_buffer_size(uv_handle_t* handle, int* value);

UV_EXTERN int uv_fileno(const uv_handle_t* handle, uv_os_fd_t* fd);

UV_EXTERN uv_buf_t uv_buf_init(char* base, unsigned int len);

UV_EXTERN int uv_pipe(uv_file fds[2], int read_flags, int write_flags);

UV_EXTERN int uv_socketpair(int type,

int protocol,

uv_os_sock_t socket_vector[2],

int flags0,

int flags1);

#define UV_STREAM_FIELDS \

/* number of bytes queued for writing */ \

size_t write_queue_size; \

uv_alloc_cb alloc_cb; \

uv_read_cb read_cb; \

/* private */ \

UV_STREAM_PRIVATE_FIELDS

/*

* uv_stream_t is a subclass of uv_handle_t.

*

* uv_stream is an abstract class.

*

* uv_stream_t is the parent class of uv_tcp_t, uv_pipe_t and uv_tty_t.

*/

struct uv_stream_s {

UV_HANDLE_FIELDS

UV_STREAM_FIELDS

};

UV_EXTERN size_t uv_stream_get_write_queue_size(const uv_stream_t* stream);

UV_EXTERN int uv_listen(uv_stream_t* stream, int backlog, uv_connection_cb cb);

UV_EXTERN int uv_accept(uv_stream_t* server, uv_stream_t* client);

UV_EXTERN int uv_read_start(uv_stream_t*,

uv_alloc_cb alloc_cb,

uv_read_cb read_cb);

UV_EXTERN int uv_read_stop(uv_stream_t*);

UV_EXTERN int uv_write(uv_write_t* req,

uv_stream_t* handle,

const uv_buf_t bufs[],

unsigned int nbufs,

uv_write_cb cb);

UV_EXTERN int uv_write2(uv_write_t* req,

uv_stream_t* handle,

const uv_buf_t bufs[],

unsigned int nbufs,

uv_stream_t* send_handle,

uv_write_cb cb);

UV_EXTERN int uv_try_write(uv_stream_t* handle,

const uv_buf_t bufs[],

unsigned int nbufs);

UV_EXTERN int uv_try_write2(uv_stream_t* handle,

const uv_buf_t bufs[],

unsigned int nbufs,

uv_stream_t* send_handle);

/* uv_write_t is a subclass of uv_req_t. */

struct uv_write_s {

UV_REQ_FIELDS

uv_write_cb cb;

uv_stream_t* send_handle; /* TODO: make private and unix-only in v2.x. */

uv_stream_t* handle;

UV_WRITE_PRIVATE_FIELDS

};

UV_EXTERN int uv_is_readable(const uv_stream_t* handle);

UV_EXTERN int uv_is_writable(const uv_stream_t* handle);

UV_EXTERN int uv_stream_set_blocking(uv_stream_t* handle, int blocking);

UV_EXTERN int uv_is_closing(const uv_handle_t* handle);

/*

* uv_tcp_t is a subclass of uv_stream_t.

*

* Represents a TCP stream or TCP server.

*/

struct uv_tcp_s {

UV_HANDLE_FIELDS

UV_STREAM_FIELDS

UV_TCP_PRIVATE_FIELDS

};

UV_EXTERN int uv_tcp_init(uv_loop_t*, uv_tcp_t* handle);

UV_EXTERN int uv_tcp_init_ex(uv_loop_t*, uv_tcp_t* handle, unsigned int flags);

UV_EXTERN int uv_tcp_open(uv_tcp_t* handle, uv_os_sock_t sock);

UV_EXTERN int uv_tcp_nodelay(uv_tcp_t* handle, int enable);

UV_EXTERN int uv_tcp_keepalive(uv_tcp_t* handle,

int enable,

unsigned int delay);

UV_EXTERN int uv_tcp_simultaneous_accepts(uv_tcp_t* handle, int enable);

enum uv_tcp_flags {

/* Used with uv_tcp_bind, when an IPv6 address is used. */

UV_TCP_IPV6ONLY = 1,

/* Enable SO_REUSEPORT socket option when binding the handle.

* This allows completely duplicate bindings by multiple processes

* or threads if they all set SO_REUSEPORT before binding the port.

* Incoming connections are distributed across the participating

* listener sockets.

*

* This flag is available only on Linux 3.9+, DragonFlyBSD 3.6+,

* FreeBSD 12.0+, Solaris 11.4, and AIX 7.2.5+ for now.

*/

UV_TCP_REUSEPORT = 2,

};

UV_EXTERN int uv_tcp_bind(uv_tcp_t* handle,

const struct sockaddr* addr,

unsigned int flags);

UV_EXTERN int uv_tcp_getsockname(const uv_tcp_t* handle,

struct sockaddr* name,

int* namelen);

UV_EXTERN int uv_tcp_getpeername(const uv_tcp_t* handle,

struct sockaddr* name,

int* namelen);

UV_EXTERN int uv_tcp_close_reset(uv_tcp_t* handle, uv_close_cb close_cb);

UV_EXTERN int uv_tcp_connect(uv_connect_t* req,

uv_tcp_t* handle,

const struct sockaddr* addr,

uv_connect_cb cb);

/* uv_connect_t is a subclass of uv_req_t. */

struct uv_connect_s {

UV_REQ_FIELDS

uv_connect_cb cb;

uv_stream_t* handle;

UV_CONNECT_PRIVATE_FIELDS

};

/*

* UDP support.

*/

enum uv_udp_flags {

/* Disables dual stack mode. */

UV_UDP_IPV6ONLY = 1,

/*

* Indicates message was truncated because read buffer was too small. The

* remainder was discarded by the OS. Used in uv_udp_recv_cb.

*/

UV_UDP_PARTIAL = 2,

/*

* Indicates if SO_REUSEADDR will be set when binding the handle.

* This sets the SO_REUSEPORT socket flag on the BSDs (except for

* DragonFlyBSD), OS X, and other platforms where SO_REUSEPORTs don't

* have the capability of load balancing, as the opposite of what

* UV_UDP_REUSEPORT would do. On other Unix platforms, it sets the

* SO_REUSEADDR flag. What that means is that multiple threads or

* processes can bind to the same address without error (provided

* they all set the flag) but only the last one to bind will receive

* any traffic, in effect "stealing" the port from the previous listener.

*/

UV_UDP_REUSEADDR = 4,

/*

* Indicates that the message was received by recvmmsg, so the buffer provided

* must not be freed by the recv_cb callback.

*/

UV_UDP_MMSG_CHUNK = 8,

/*

* Indicates that the buffer provided has been fully utilized by recvmmsg and

* that it should now be freed by the recv_cb callback. When this flag is set

* in uv_udp_recv_cb, nread will always be 0 and addr will always be NULL.

*/

UV_UDP_MMSG_FREE = 16,

/*

* Indicates if IP_RECVERR/IPV6_RECVERR will be set when binding the handle.

* This sets IP_RECVERR for IPv4 and IPV6_RECVERR for IPv6 UDP sockets on

* Linux. This stops the Linux kernel from suppressing some ICMP error

* messages and enables full ICMP error reporting for faster failover.

* This flag is no-op on platforms other than Linux.

*/

UV_UDP_LINUX_RECVERR = 32,

/*

* Indicates if SO_REUSEPORT will be set when binding the handle.

* This sets the SO_REUSEPORT socket option on supported platforms.

* Unlike UV_UDP_REUSEADDR, this flag will make multiple threads or

* processes that are binding to the same address and port "share"

* the port, which means incoming datagrams are distributed across

* the receiving sockets among threads or processes.

*

* This flag is available only on Linux 3.9+, DragonFlyBSD 3.6+,

* FreeBSD 12.0+, Solaris 11.4, and AIX 7.2.5+ for now.

*/

UV_UDP_REUSEPORT = 64,

/*

* Indicates that recvmmsg should be used, if available.

*/

UV_UDP_RECVMMSG = 256

};

typedef void (*uv_udp_send_cb)(uv_udp_send_t* req, int status);

typedef void (*uv_udp_recv_cb)(uv_udp_t* handle,

ssize_t nread,

const uv_buf_t* buf,

const struct sockaddr* addr,

unsigned flags);

/* uv_udp_t is a subclass of uv_handle_t. */

struct uv_udp_s {

UV_HANDLE_FIELDS

/* read-only */

/*

* Number of bytes queued for sending. This field strictly shows how much

* information is currently queued.

*/

size_t send_queue_size;

/*

* Number of send requests currently in the queue awaiting to be processed.

*/

size_t send_queue_count;

UV_UDP_PRIVATE_FIELDS

};

/* uv_udp_send_t is a subclass of uv_req_t. */

struct uv_udp_send_s {

UV_REQ_FIELDS

uv_udp_t* handle;

uv_udp_send_cb cb;

UV_UDP_SEND_PRIVATE_FIELDS

};

UV_EXTERN int uv_udp_init(uv_loop_t*, uv_udp_t* handle);

UV_EXTERN int uv_udp_init_ex(uv_loop_t*, uv_udp_t* handle, unsigned int flags);

UV_EXTERN int uv_udp_open(uv_udp_t* handle, uv_os_sock_t sock);

UV_EXTERN int uv_udp_bind(uv_udp_t* handle,

const struct sockaddr* addr,

unsigned int flags);

UV_EXTERN int uv_udp_connect(uv_udp_t* handle, const struct sockaddr* addr);

UV_EXTERN int uv_udp_getpeername(const uv_udp_t* handle,

struct sockaddr* name,

int* namelen);

UV_EXTERN int uv_udp_getsockname(const uv_udp_t* handle,

struct sockaddr* name,

int* namelen);

UV_EXTERN int uv_udp_set_membership(uv_udp_t* handle,

const char* multicast_addr,

const char* interface_addr,

uv_membership membership);

UV_EXTERN int uv_udp_set_source_membership(uv_udp_t* handle,

const char* multicast_addr,

const char* interface_addr,

const char* source_addr,

uv_membership membership);

UV_EXTERN int uv_udp_set_multicast_loop(uv_udp_t* handle, int on);

UV_EXTERN int uv_udp_set_multicast_ttl(uv_udp_t* handle, int ttl);

UV_EXTERN int uv_udp_set_multicast_interface(uv_udp_t* handle,

const char* interface_addr);

UV_EXTERN int uv_udp_set_broadcast(uv_udp_t* handle, int on);

UV_EXTERN int uv_udp_set_ttl(uv_udp_t* handle, int ttl);

UV_EXTERN int uv_udp_send(uv_udp_send_t* req,

uv_udp_t* handle,

const uv_buf_t bufs[],

unsigned int nbufs,

const struct sockaddr* addr,

uv_udp_send_cb send_cb);

UV_EXTERN int uv_udp_try_send(uv_udp_t* handle,

const uv_buf_t bufs[],

unsigned int nbufs,

const struct sockaddr* addr);

UV_EXTERN int uv_udp_try_send2(uv_udp_t* handle,

unsigned int count,

uv_buf_t* bufs[/*count*/],

unsigned int nbufs[/*count*/],

struct sockaddr* addrs[/*count*/],

unsigned int flags);

UV_EXTERN int uv_udp_recv_start(uv_udp_t* handle,

uv_alloc_cb alloc_cb,

uv_udp_recv_cb recv_cb);

UV_EXTERN int uv_udp_using_recvmmsg(const uv_udp_t* handle);

UV_EXTERN int uv_udp_recv_stop(uv_udp_t* handle);

UV_EXTERN size_t uv_udp_get_send_queue_size(const uv_udp_t* handle);

UV_EXTERN size_t uv_udp_get_send_queue_count(const uv_udp_t* handle);

/*

* uv_tty_t is a subclass of uv_stream_t.

*

* Representing a stream for the console.

*/

struct uv_tty_s {

UV_HANDLE_FIELDS

UV_STREAM_FIELDS

UV_TTY_PRIVATE_FIELDS

};

typedef enum {

/* Initial/normal terminal mode */

UV_TTY_MODE_NORMAL,

/*

* Raw input mode (On Windows, ENABLE_WINDOW_INPUT is also enabled).

* May become equivalent to UV_TTY_MODE_RAW_VT in future libuv versions.

*/

UV_TTY_MODE_RAW,

/* Binary-safe I/O mode for IPC (Unix-only) */

UV_TTY_MODE_IO,

/* Raw input mode. On Windows ENABLE_VIRTUAL_TERMINAL_INPUT is also set. */

UV_TTY_MODE_RAW_VT

} uv_tty_mode_t;

typedef enum {

/*

* The console supports handling of virtual terminal sequences

* (Windows10 new console, ConEmu)

*/

UV_TTY_SUPPORTED,

/* The console cannot process the virtual terminal sequence. (Legacy

* console)

*/

UV_TTY_UNSUPPORTED

} uv_tty_vtermstate_t;

UV_EXTERN int uv_tty_init(uv_loop_t*, uv_tty_t*, uv_file fd, int readable);

UV_EXTERN int uv_tty_set_mode(uv_tty_t*, uv_tty_mode_t mode);

UV_EXTERN int uv_tty_reset_mode(void);

UV_EXTERN int uv_tty_get_winsize(uv_tty_t*, int* width, int* height);

UV_EXTERN void uv_tty_set_vterm_state(uv_tty_vtermstate_t state);

UV_EXTERN int uv_tty_get_vterm_state(uv_tty_vtermstate_t* state);

#ifdef __cplusplus

extern "C++" {

inline int uv_tty_set_mode(uv_tty_t* handle, int mode) {

return uv_tty_set_mode(handle, static_cast<uv_tty_mode_t>(mode));

}

}

#endif

UV_EXTERN uv_handle_type uv_guess_handle(uv_file file);

enum {

UV_PIPE_NO_TRUNCATE = 1u << 0

};

/*

* uv_pipe_t is a subclass of uv_stream_t.

*

* Representing a pipe stream or pipe server. On Windows this is a Named

* Pipe. On Unix this is a Unix domain socket.

*/

struct uv_pipe_s {

UV_HANDLE_FIELDS

UV_STREAM_FIELDS

int ipc; /* non-zero if this pipe is used for passing handles */

UV_PIPE_PRIVATE_FIELDS

};

UV_EXTERN int uv_pipe_init(uv_loop_t*, uv_pipe_t* handle, int ipc);

UV_EXTERN int uv_pipe_open(uv_pipe_t*, uv_file file);

UV_EXTERN int uv_pipe_bind(uv_pipe_t* handle, const char* name);

UV_EXTERN int uv_pipe_bind2(uv_pipe_t* handle,

const char* name,

size_t namelen,

unsigned int flags);

UV_EXTERN void uv_pipe_connect(uv_connect_t* req,

uv_pipe_t* handle,

const char* name,

uv_connect_cb cb);

UV_EXTERN int uv_pipe_connect2(uv_connect_t* req,

uv_pipe_t* handle,

const char* name,

size_t namelen,

unsigned int flags,

uv_connect_cb cb);

UV_EXTERN int uv_pipe_getsockname(const uv_pipe_t* handle,

char* buffer,

size_t* size);

UV_EXTERN int uv_pipe_getpeername(const uv_pipe_t* handle,

char* buffer,

size_t* size);

UV_EXTERN void uv_pipe_pending_instances(uv_pipe_t* handle, int count);

UV_EXTERN int uv_pipe_pending_count(uv_pipe_t* handle);

UV_EXTERN uv_handle_type uv_pipe_pending_type(uv_pipe_t* handle);

UV_EXTERN int uv_pipe_chmod(uv_pipe_t* handle, int flags);

struct uv_poll_s {

UV_HANDLE_FIELDS

uv_poll_cb poll_cb;

UV_POLL_PRIVATE_FIELDS

};

enum uv_poll_event {

UV_READABLE = 1,

UV_WRITABLE = 2,

UV_DISCONNECT = 4,

UV_PRIORITIZED = 8

};

UV_EXTERN int uv_poll_init(uv_loop_t* loop, uv_poll_t* handle, int fd);

UV_EXTERN int uv_poll_init_socket(uv_loop_t* loop,

uv_poll_t* handle,

uv_os_sock_t socket);

UV_EXTERN int uv_poll_start(uv_poll_t* handle, int events, uv_poll_cb cb);

UV_EXTERN int uv_poll_stop(uv_poll_t* handle);

struct uv_prepare_s {

UV_HANDLE_FIELDS

UV_PREPARE_PRIVATE_FIELDS

};

UV_EXTERN int uv_prepare_init(uv_loop_t*, uv_prepare_t* prepare);

UV_EXTERN int uv_prepare_start(uv_prepare_t* prepare, uv_prepare_cb cb);

UV_EXTERN int uv_prepare_stop(uv_prepare_t* prepare);

struct uv_check_s {

UV_HANDLE_FIELDS

UV_CHECK_PRIVATE_FIELDS

};

UV_EXTERN int uv_check_init(uv_loop_t*, uv_check_t* check);

UV_EXTERN int uv_check_start(uv_check_t* check, uv_check_cb cb);

UV_EXTERN int uv_check_stop(uv_check_t* check);

struct uv_idle_s {

UV_HANDLE_FIELDS

UV_IDLE_PRIVATE_FIELDS

};

UV_EXTERN int uv_idle_init(uv_loop_t*, uv_idle_t* idle);

UV_EXTERN int uv_idle_start(uv_idle_t* idle, uv_idle_cb cb);

UV_EXTERN int uv_idle_stop(uv_idle_t* idle);

struct uv_async_s {

UV_HANDLE_FIELDS

UV_ASYNC_PRIVATE_FIELDS

};

UV_EXTERN int uv_async_init(uv_loop_t*,

uv_async_t* async,

uv_async_cb async_cb);

UV_EXTERN int uv_async_send(uv_async_t* async);

/*

* uv_timer_t is a subclass of uv_handle_t.

*

* Used to get woken up at a specified time in the future.

*/

struct uv_timer_s {

UV_HANDLE_FIELDS

UV_TIMER_PRIVATE_FIELDS

};

UV_EXTERN int uv_timer_init(uv_loop_t*, uv_timer_t* handle);

UV_EXTERN int uv_timer_start(uv_timer_t* handle,

uv_timer_cb cb,

uint64_t timeout,

uint64_t repeat);

UV_EXTERN int uv_timer_stop(uv_timer_t* handle);

UV_EXTERN int uv_timer_again(uv_timer_t* handle);

UV_EXTERN void uv_timer_set_repeat(uv_timer_t* handle, uint64_t repeat);

UV_EXTERN uint64_t uv_timer_get_repeat(const uv_timer_t* handle);

UV_EXTERN uint64_t uv_timer_get_due_in(const uv_timer_t* handle);

/*

* uv_getaddrinfo_t is a subclass of uv_req_t.

*

* Request object for uv_getaddrinfo.

*/

struct uv_getaddrinfo_s {

UV_REQ_FIELDS

/* read-only */

uv_loop_t* loop;

/* struct addrinfo* addrinfo is marked as private, but it really isn't. */

UV_GETADDRINFO_PRIVATE_FIELDS

};

UV_EXTERN int uv_getaddrinfo(uv_loop_t* loop,

uv_getaddrinfo_t* req,

uv_getaddrinfo_cb getaddrinfo_cb,

const char* node,

const char* service,