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NCBI C++ ToolKit: src/connect/ncbi_socket_cxx.cpp Source File

r_timeout(0

), w_timeout(0), c_timeout(0)

r_timeout(0

), w_timeout(0), c_timeout(0)

r_timeout(0

), w_timeout(0), c_timeout(0)

* port,

* port,

(hostport.empty())

*host =

, port = 0;

(

.IsEmpty())

* sender_host,

* sender_port,

msglen, &

, sender_port);

* port,

kZero = {0, 0};

x_n = polls.size();

(

= 0;

< x_n; ++

) {

x_polls[

].

= 0;

polls[

].m_REvent = revent;

x_polls[

].

= event;

x_polls[

].

= 0;

x_ready ? &kZero : timeout, &xx_ready);

(

= 0;

< x_n; ++

) {

(x_polls[

].revent)

polls[

].m_REvent = x_polls[

].

;

*n_ready = xx_ready + x_ready;

* port)

* s =

.c_str();

e ? (size_t)(e - s) : string::npos;

* port)

* s =

.c_str();

*

->GetAddrPtr() = temp;

e ? (size_t)(e - s) : string::npos;

static const char * str(char *buf, int n)

@ eTakeOwnership

An object can take ownership of another.

@ eNoOwnership

No ownership is assumed.

#define END_NCBI_SCOPE

End previously defined NCBI scope.

#define BEGIN_NCBI_SCOPE

Define ncbi namespace.

EIO_Status Connect(const string &filename, const STimeout *timeout=kDefaultTimeout, TSOCK_Flags flags=fSOCK_LogDefault)

EIO_Status Connect(const string &host, unsigned short port, const STimeout *timeout=kDefaultTimeout, TSOCK_Flags flags=fSOCK_LogDefault)

Connect to "host:port".

void LSOCK_GetListeningAddress6(LSOCK lsock, TNCBI_IPv6Addr *addr, unsigned short *port, ENH_ByteOrder byte_order)

const char * SOCK_StringToHostPort(const char *str, unsigned int *host, unsigned short *port)

Read (skipping leading blanks) "[host][:port]" from a string stopping at either EOL or a blank charac...

void SOCK_GetPeerAddress(SOCK sock, unsigned int *host, unsigned short *port, ENH_ByteOrder byte_order)

Get host and port of the socket's peer (remote end).

char * SOCK_GetPeerAddressStringEx(SOCK sock, char *buf, size_t bufsize, ESOCK_AddressFormat format)

Get textual representation of the socket's peer.

int SOCK_isipEx(const char *host, int fullquad)

Check whether a given string represents a valid bare IPv4 address.

size_t SOCK_HostPortToString6(const TNCBI_IPv6Addr *addr, unsigned short port, char *buf, size_t bufsize)

IPv6-aware version of SOCK_HostPortToString, which can handle both IPv4 and IPv6.

EIO_Status SOCK_SetTimeout(SOCK sock, EIO_Event event, const STimeout *timeout)

Specify timeout for the connection I/O (see SOCK_[Read|Write|Close]()).

EIO_Status Accept(CSocket *&sock, const STimeout *timeout=kInfiniteTimeout, TSOCK_Flags flags=fSOCK_LogDefault) const

EIO_Status SOCK_Close(SOCK sock)

Close the SOCK handle, and destroy all relevant internal data.

int SOCK_IsAddress(const char *host)

Check whether a given string represents a bare IP address.

static CNCBI_IPAddr gethostbyname(const string &host, ESwitch log=eOff)

Return 0 or empty address on error.

SOCK GetSOCK(void) const

Access to the underlying "SOCK".

EIO_Status DSOCK_Connect(SOCK sock, const char *host, unsigned short port)

Associate a datagram socket with a destination address.

static unsigned int GetLoopbackAddress4(void)

TRIGGER GetTRIGGER(void) const

Access to the underlying "TRIGGER".

EIO_Status Recv(void *buf, size_t buflen, size_t *msglen=0, string *sender_host=0, unsigned short *sender_port=0, size_t maxmsglen=0)

EIO_Status ReadLine(string &str)

Read a line from socket (up to CR-LF, LF, or null character, discarding any of the EOLs).

STimeout * c_timeout

eIO_Close

EIO_Status SOCK_Read(SOCK sock, void *buf, size_t size, size_t *n_read, EIO_ReadMethod how)

Read/peek up to "size" bytes from "sock" to a buffer pointed to by "buf".

EIO_Status SOCK_Status(SOCK sock, EIO_Event direction)

Return low-level socket I/O status of *last* socket operation.

TNCBI_IPv6Addr * SOCK_gethostbynameEx6(TNCBI_IPv6Addr *addr, const char *hostname, ESwitch log)

Find and return an Internet address of a named host.

const STimeout * GetTimeout(EIO_Event event) const

Get timeout for I/O in the specified direction.

EIO_Status POLLABLE_Poll(size_t n, SPOLLABLE_Poll polls[], const STimeout *timeout, size_t *n_ready)

Poll for I/O readiness.

static string gethostname(ESwitch log=eOff)

Return empty string on error.

STimeout oo_timeout

storage for o_timeout

static EIO_Status Poll(vector< SPoll > &polls, const STimeout *timeout, size_t *n_ready=0)

Poll a vector of CPollable objects for I/O readiness.

POLLABLE POLLABLE_FromSOCK(SOCK)

static size_t StringToHostPort(const string &str, unsigned int *host, unsigned short *port)

Return number of characters parsed (0 if cannot detect "host:port"), and string::npos on error ("host...

EIO_Status Connect(const string &host, unsigned short port)

ENH_ByteOrder

Network and host byte order enumeration type.

void GetListeningAddress(CNCBI_IPAddr *addr, unsigned short *port, ENH_ByteOrder byte_order=eNH_HostByteOrder) const

Get listening address.

EIO_Status DSOCK_RecvMsg6(SOCK sock, void *buf, size_t bufsize, size_t maxmsglen, size_t *msglen, TNCBI_IPv6Addr *sender_addr, unsigned short *sender_port)

Receive a datagram from a datagram socket.

static CNCBI_IPAddr GetLoopbackAddress(void)

Loopback address is in network byte order (when "unsigned int")

EIO_Status SetTimeout(EIO_Event event, const STimeout *timeout)

Set timeout for I/O in the specified direction.

void SOCK_GetPeerAddress6(SOCK sock, TNCBI_IPv6Addr *addr, unsigned short *port, ENH_ByteOrder byte_order)

Get host and port of the socket's peer (remote end).

void Reset(SOCK sock, EOwnership if_to_own, ECopyTimeout whence)

Close the current underlying "SOCK" (if any, and if owned), and from now on use "sock" as the underly...

static string HostPortToString(const CNCBI_IPAddr &addr, unsigned short port)

See SOCK_HostPortToString[6], return empty when failed.

EIO_Status SOCK_CreateEx(const char *host, unsigned short port, const STimeout *timeout, SOCK *sock, const void *data, size_t size, TSOCK_Flags flags)

[CLIENT-side] Connect client to another(server-side, listening) socket (socket() + connect() [+ selec...

EIO_Status SOCK_Abort(SOCK sock)

If there is outstanding connection or output data pending, cancel it.

EIO_Status LSOCK_AcceptEx(LSOCK lsock, const STimeout *timeout, SOCK *sock, TSOCK_Flags flags)

[SERVER-side] Accept connection from a client.

TNCBI_IPv6Addr * SOCK_GetLoopbackAddress6(TNCBI_IPv6Addr *addr)

Get loopback address.

int SOCK_ntoa(unsigned int addr, char *buf, size_t bufsize)

Convert IP address to a string in dotted notation.

static bool isip(const string &host, bool fullquad=false)

For IPv4 only.

EIP_StringKind

Broader string classificator.

STimeout cc_timeout

storage for c_timeout

STimeout * r_timeout

eIO_Read

EIO_Status TRIGGER_Close(TRIGGER trigger)

Close an event trigger.

TNCBI_IPv6Addr * SOCK_GetLocalHostAddress6(TNCBI_IPv6Addr *addr, ESwitch reget)

Get (and cache for faster follow-up retrievals) IP address of local host.

static CNCBI_IPAddr GetLocalHostAddress(ESwitch reget=eDefault)

Local host address in network byte order (cached for faster retrieval)

EIO_Status SOCK_ReadLine(SOCK sock, char *line, size_t size, size_t *n_read)

Read a line from SOCK.

int SOCK_isip6(const char *host)

Check whether a given string represents a valid bare IPv6 address.

EIO_Status GetStatus(EIO_Event direction) const

Return status of *last* I/O operation without making any actual I/O.

EIO_Status SOCK_Write(SOCK sock, const void *data, size_t size, size_t *n_written, EIO_WriteMethod how)

Write "size" bytes of "data" to "sock".

char * LSOCK_GetListeningAddressStringEx(LSOCK lsock, char *buf, size_t bufsize, ESOCK_AddressFormat format)

EIO_Status Reconnect(const STimeout *timeout=kDefaultTimeout)

Reconnect to the same address.

const char * SOCK_gethostbyaddrEx6(const TNCBI_IPv6Addr *addr, char *buf, size_t buflen, ESwitch log)

Take an Internet address (IPv6 or IPv4) [or 0 (or empty) for current host], and fill in the provided ...

EIO_Status SOCK_Reconnect(SOCK sock, const char *host, unsigned short port, const STimeout *timeout)

[CLIENT-side] Close the socket referred to by "sock" and then connect it to another "host:port"; fail...

void GetPeerAddress(unsigned int *host, unsigned short *port, ENH_ByteOrder byte_order) const

Get peer address.

int SOCK_gethostnameEx(char *name, size_t namelen, ESwitch log)

Get the local host name.

virtual ~CSocket(void)

Call Close(), then self-destruct.

STimeout * o_timeout

eIO_Open

EOwnership m_IsOwned

Timeouts.

const char * SOCK_StringToHostPort6(const char *str, TNCBI_IPv6Addr *addr, unsigned short *port)

POLLABLE POLLABLE_FromLSOCK(LSOCK)

static string gethostbyaddr(const CNCBI_IPAddr &addr, ESwitch log=eOff)

Return empty string on error.

LSOCK GetLSOCK(void) const

Access to the underlying "LSOCK".

POLLABLE POLLABLE_FromTRIGGER(TRIGGER)

Conversion utilities from handles to POLLABLEs, and back.

static TNCBI_IPv6Addr GetLoopbackAddress6(void)

STimeout ww_timeout

storage for w_timeout

EIO_Status LSOCK_Close(LSOCK lsock)

[SERVER-side] Close the listening socket, destroy relevant internal data.

const STimeout * SOCK_GetTimeout(SOCK sock, EIO_Event event)

Get the connection's i/o timeout (or NULL, if the timeout is infinite).

virtual ~CListeningSocket(void)

Call Close(), then self-destruct.

EIO_Status SOCK_CreateUNIX(const char *path, const STimeout *timeout, SOCK *sock, const void *data, size_t size, TSOCK_Flags flags)

static string ntoa(const CNCBI_IPAddr &addr)

BSD-like API.

STimeout rr_timeout

storage for r_timeout

STimeout * w_timeout

eIO_Write

EIO_Status Write(const void *buf, size_t size, size_t *n_written=0, EIO_WriteMethod how=eIO_WritePersist)

Write to socket.

unsigned int TSOCK_Flags

bitwise "OR" of ESOCK_Flags

EIO_Status Read(void *buf, size_t size, size_t *n_read=0, EIO_ReadMethod how=eIO_ReadPlain)

Read from socket.

@ eIP_IPv6

Accept IPv6 notations only.

@ eIP_HistoricIPv4

Accept old-fashioned IPv4 notations.

@ eIP_Any

Any IPv4 or IPv6 notations.

@ eIP_FullQuadIPv4

Accept full-quad IPv4 notations only.

enum ENcbiSwitch ESwitch

Aux.

unsigned int usec

microseconds (modulo 1,000,000)

EIO_ReadMethod

I/O read method.

enum ENcbiOwnership EOwnership

Ownership relations between objects.

EIO_WriteMethod

I/O write method.

EIO_Event

I/O event (or direction).

@ eIO_Success

everything is fine, no error occurred

@ eIO_Unknown

unknown I/O error (likely fatal but can retry)

@ eIO_InvalidArg

bad argument / parameter value(s) supplied

@ eIO_ReadWrite

eIO_Read | eIO_Write (also, eCONN_OnFlush)

@ eIO_Open

also serves as no-event indicator in SOCK_Poll

@ eIO_Close

also serves as an error indicator in SOCK_Poll

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const struct ncbi::grid::netcache::search::fields::SIZE size

int NcbiIsEmptyIPv6(const TNCBI_IPv6Addr *addr)

Return non-zero if the address is empty (either as NULL or IPv6 or IPv4); return zero otherwise.

TNCBI_IPv6Addr * NcbiIPv4ToIPv6(TNCBI_IPv6Addr *addr, unsigned int ipv4, size_t pfxlen)

Embed a passed network byte order IPv4 address into an IPv6 address using the specified prefix length...

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