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asio之socket_ops

news 来源：原创 2025/6/13 6:59:49

简介

socket_ops是asio中的命名空间，是对原生网络套接字api的封装

状态枚举

包含阻塞、套接字类型等

enum
{// The user wants a non-blocking socket.user_set_non_blocking = 1,// The socket has been set non-blocking.internal_non_blocking = 2,// Helper "state" used to determine whether the socket is non-blocking.non_blocking = user_set_non_blocking | internal_non_blocking,// User wants connection_aborted errors, which are disabled by default.enable_connection_aborted = 4,// The user set the linger option. Needs to be checked when closing.user_set_linger = 8,// The socket is stream-oriented.stream_oriented = 16,// The socket is datagram-oriented.datagram_oriented = 32,// The socket may have been dup()-ed.possible_dup = 64
};

同步异步接受

#if !defined(BOOST_ASIO_WINDOWS_RUNTIME)BOOST_ASIO_DECL socket_type accept(socket_type s, socket_addr_type* addr,std::size_t* addrlen, boost::system::error_code& ec);BOOST_ASIO_DECL socket_type sync_accept(socket_type s,state_type state, socket_addr_type* addr,std::size_t* addrlen, boost::system::error_code& ec);#if defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL void complete_iocp_accept(socket_type s,void* output_buffer, DWORD address_length,socket_addr_type* addr, std::size_t* addrlen,socket_type new_socket, boost::system::error_code& ec);#else // defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL bool non_blocking_accept(socket_type s,state_type state, socket_addr_type* addr, std::size_t* addrlen,boost::system::error_code& ec, socket_type& new_socket);#endif // defined(BOOST_ASIO_HAS_IOCP)

绑定

BOOST_ASIO_DECL int bind(socket_type s, const socket_addr_type* addr,std::size_t addrlen, boost::system::error_code& ec);

关闭

BOOST_ASIO_DECL int close(socket_type s, state_type& state,bool destruction, boost::system::error_code& ec);BOOST_ASIO_DECL int shutdown(socket_type s,int what, boost::system::error_code& ec);

非阻塞

BOOST_ASIO_DECL bool set_user_non_blocking(socket_type s,state_type& state, bool value, boost::system::error_code& ec);BOOST_ASIO_DECL bool set_internal_non_blocking(socket_type s,state_type& state, bool value, boost::system::error_code& ec);

同步异步连接

BOOST_ASIO_DECL int connect(socket_type s, const socket_addr_type* addr,std::size_t addrlen, boost::system::error_code& ec);BOOST_ASIO_DECL void sync_connect(socket_type s, const socket_addr_type* addr,std::size_t addrlen, boost::system::error_code& ec);#if defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL void complete_iocp_connect(socket_type s,boost::system::error_code& ec);#endif // defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL bool non_blocking_connect(socket_type s,boost::system::error_code& ec);

套接字创建

BOOST_ASIO_DECL int socketpair(int af, int type, int protocol,socket_type sv[2], boost::system::error_code& ec);BOOST_ASIO_DECL socket_type socket(int af, int type, int protocol,boost::system::error_code& ec);

套接字属性

BOOST_ASIO_DECL bool sockatmark(socket_type s, boost::system::error_code& ec);BOOST_ASIO_DECL size_t available(socket_type s, boost::system::error_code& ec);BOOST_ASIO_DECL int setsockopt(socket_type s, state_type& state,int level, int optname, const void* optval,std::size_t optlen, boost::system::error_code& ec);BOOST_ASIO_DECL int getsockopt(socket_type s, state_type state,int level, int optname, void* optval,size_t* optlen, boost::system::error_code& ec);BOOST_ASIO_DECL int getpeername(socket_type s, socket_addr_type* addr,std::size_t* addrlen, bool cached, boost::system::error_code& ec);BOOST_ASIO_DECL int getsockname(socket_type s, socket_addr_type* addr,std::size_t* addrlen, boost::system::error_code& ec);BOOST_ASIO_DECL int ioctl(socket_type s, state_type& state,int cmd, ioctl_arg_type* arg, boost::system::error_code& ec);

监听

BOOST_ASIO_DECL int listen(socket_type s,int backlog, boost::system::error_code& ec);

设置缓存

#if defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
typedef WSABUF buf;
#else // defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
typedef iovec buf;
#endif // defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)BOOST_ASIO_DECL void init_buf(buf& b, void* data, size_t size);BOOST_ASIO_DECL void init_buf(buf& b, const void* data, size_t size);

同步异步接收

BOOST_ASIO_DECL signed_size_type recv(socket_type s, buf* bufs,size_t count, int flags, boost::system::error_code& ec);BOOST_ASIO_DECL size_t sync_recv(socket_type s, state_type state, buf* bufs,size_t count, int flags, bool all_empty, boost::system::error_code& ec);#if defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL void complete_iocp_recv(state_type state,const weak_cancel_token_type& cancel_token, bool all_empty,boost::system::error_code& ec, size_t bytes_transferred);#else // defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL bool non_blocking_recv(socket_type s,buf* bufs, size_t count, int flags, bool is_stream,boost::system::error_code& ec, size_t& bytes_transferred);#endif // defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL signed_size_type recvfrom(socket_type s, buf* bufs,size_t count, int flags, socket_addr_type* addr,std::size_t* addrlen, boost::system::error_code& ec);BOOST_ASIO_DECL size_t sync_recvfrom(socket_type s, state_type state,buf* bufs, size_t count, int flags, socket_addr_type* addr,std::size_t* addrlen, boost::system::error_code& ec);#if defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL void complete_iocp_recvfrom(const weak_cancel_token_type& cancel_token,boost::system::error_code& ec);#else // defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL bool non_blocking_recvfrom(socket_type s,buf* bufs, size_t count, int flags,socket_addr_type* addr, std::size_t* addrlen,boost::system::error_code& ec, size_t& bytes_transferred);#endif // defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL signed_size_type recvmsg(socket_type s, buf* bufs,size_t count, int in_flags, int& out_flags,boost::system::error_code& ec);BOOST_ASIO_DECL size_t sync_recvmsg(socket_type s, state_type state,buf* bufs, size_t count, int in_flags, int& out_flags,boost::system::error_code& ec);#if defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL void complete_iocp_recvmsg(const weak_cancel_token_type& cancel_token,boost::system::error_code& ec);#else // defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL bool non_blocking_recvmsg(socket_type s,buf* bufs, size_t count, int in_flags, int& out_flags,boost::system::error_code& ec, size_t& bytes_transferred);#endif // defined(BOOST_ASIO_HAS_IOCP)

同步异步发送

BOOST_ASIO_DECL signed_size_type send(socket_type s, const buf* bufs,size_t count, int flags, boost::system::error_code& ec);BOOST_ASIO_DECL size_t sync_send(socket_type s, state_type state,const buf* bufs, size_t count, int flags,bool all_empty, boost::system::error_code& ec);#if defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL void complete_iocp_send(const weak_cancel_token_type& cancel_token,boost::system::error_code& ec);#else // defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL bool non_blocking_send(socket_type s,const buf* bufs, size_t count, int flags,boost::system::error_code& ec, size_t& bytes_transferred);#endif // defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL signed_size_type sendto(socket_type s, const buf* bufs,size_t count, int flags, const socket_addr_type* addr,std::size_t addrlen, boost::system::error_code& ec);BOOST_ASIO_DECL size_t sync_sendto(socket_type s, state_type state,const buf* bufs, size_t count, int flags, const socket_addr_type* addr,std::size_t addrlen, boost::system::error_code& ec);#if !defined(BOOST_ASIO_HAS_IOCP)BOOST_ASIO_DECL bool non_blocking_sendto(socket_type s,const buf* bufs, size_t count, int flags,const socket_addr_type* addr, std::size_t addrlen,boost::system::error_code& ec, size_t& bytes_transferred);#endif // !defined(BOOST_ASIO_HAS_IOCP)

套接字io复用

BOOST_ASIO_DECL int select(int nfds, fd_set* readfds, fd_set* writefds,fd_set* exceptfds, timeval* timeout, boost::system::error_code& ec);BOOST_ASIO_DECL int poll_read(socket_type s,state_type state, boost::system::error_code& ec);BOOST_ASIO_DECL int poll_write(socket_type s,state_type state, boost::system::error_code& ec);BOOST_ASIO_DECL int poll_connect(socket_type s, boost::system::error_code& ec);

网络地址

BOOST_ASIO_DECL const char* inet_ntop(int af, const void* src, char* dest,size_t length, unsigned long scope_id, boost::system::error_code& ec);BOOST_ASIO_DECL int inet_pton(int af, const char* src, void* dest,unsigned long* scope_id, boost::system::error_code& ec);BOOST_ASIO_DECL int gethostname(char* name,int namelen, boost::system::error_code& ec);#if !defined(BOOST_ASIO_WINDOWS_RUNTIME)BOOST_ASIO_DECL boost::system::error_code getaddrinfo(const char* host,const char* service, const addrinfo_type& hints,addrinfo_type** result, boost::system::error_code& ec);BOOST_ASIO_DECL boost::system::error_code background_getaddrinfo(const weak_cancel_token_type& cancel_token, const char* host,const char* service, const addrinfo_type& hints,addrinfo_type** result, boost::system::error_code& ec);BOOST_ASIO_DECL void freeaddrinfo(addrinfo_type* ai);BOOST_ASIO_DECL boost::system::error_code getnameinfo(const socket_addr_type* addr, std::size_t addrlen,char* host, std::size_t hostlen, char* serv,std::size_t servlen, int flags, boost::system::error_code& ec);BOOST_ASIO_DECL boost::system::error_code sync_getnameinfo(const socket_addr_type* addr, std::size_t addrlen,char* host, std::size_t hostlen, char* serv,std::size_t servlen, int sock_type, boost::system::error_code& ec);BOOST_ASIO_DECL boost::system::error_code background_getnameinfo(const weak_cancel_token_type& cancel_token,const socket_addr_type* addr, std::size_t addrlen,char* host, std::size_t hostlen, char* serv,std::size_t servlen, int sock_type, boost::system::error_code& ec);#endif // !defined(BOOST_ASIO_WINDOWS_RUNTIME)BOOST_ASIO_DECL u_long_type network_to_host_long(u_long_type value);BOOST_ASIO_DECL u_long_type host_to_network_long(u_long_type value);BOOST_ASIO_DECL u_short_type network_to_host_short(u_short_type value);BOOST_ASIO_DECL u_short_type host_to_network_short(u_short_type value);