C + + Poco library Chinese Programming Reference Guide (3) poco::net::socket

1 SelectMode

Enum SelectMode   
    ///the Mode argument to poll () and select ().   
{   
    Select_read  = 1,   
    select_write = 2,   
    select_error = 4   
};

2 Socketlist

typedef std::vector<socket> Socketlist;

3 constructors

Uninitialized socket:

Socket ();

Copy Constructors

Socket (const socket& socket);

4 Overloaded operators

Assignment operator:

socket& operator = (const socket& Socket);

Comparison operators:

BOOL operator = = 

(const socket& Socket) const;   
BOOL operator!= (const socket& Socket) const;   
BOOL Operator <  (const socket& Socket) const;   
BOOL operator <= (const socket& Socket) const;   
BOOL operator >  (const socket& Socket) const;   
BOOL operator >= (const socket& Socket) const;

5 Common socket operation

Returns the number of bytes of readable data for this socket, which does not cause the socket to block:

int available () const;

Close socket:

void Close ();

Poll

BOOL Poll (const 

poco::timespan& timeout, int mode) const;   
    Determines the status of the socket, using a    
    ///call to select ().    
    ///The Mode argument is constructed by combining the values///of the SelectMode   
    enumeration.   
    ///Returns True if the next operation corresponding   
    to///mode won't block, false otherwise.   

socketimpl* impl () const;   
    Returns the SocketImpl for this socket.

Check that the connection for this socket is secure (using SSL or TLS):

BOOL Secure () const;

6 buffer

Buffer to send data:

void setsendbuffersize (int size);

int getsendbuffersize () const;

Buffer to receive data:

void setreceivebuffersize (int size);

int getreceivebuffersize () const;

7 Timeout time

Timeout time to send data:

void Setsendtimeout (const poco::timespan& timeout);

Poco::timespan getsendtimeout () const;

Timeout time to receive data:

void Setreceivetimeout (const poco::timespan& timeout);

Poco::timespan getreceivetimeout () const;

8 Other interfaces

void setOption (int level, option int, int value);   
void setOption (int level, option int, unsigned value);   
void setOption (int level, option int, unsigned char value);   
void setOption (int level, option int, const poco::timespan& value);   

void setOption (int level, option int, const ipaddress& value);   
void getOption (int level, int option, int& value) const;   
void getOption (int level, int option, unsigned& value) const; 

  
void getOption (int level, int option, unsigned char& value) const;   
void getOption (int level, int option, poco::timespan& value) const;   

void getOption (int level, int option, ipaddress& value) const;   
void Setlinger (bool on, int seconds);   

void Getlinger (bool& on, int& seconds) const;   
void Setnodelay (bool flag);   

BOOL Getnodelay () const;   
void Setkeepalive (bool flag);   

BOOL Getkeepalive () const;   
void Setreuseaddress (bool flag);   

BOOL Getreuseaddress () const; void Setreuseport (BOOL flag);   

BOOL Getreuseport () const;   
void Setoobinline (bool flag);   

BOOL Getoobinline () const;   
void setblocking (bool flag); BOOL Getblocking () const;

To obtain the IP and port of the socket:

SocketAddress address () const;

Get the IP address and port of the peer socket:

SocketAddress peeraddress () const;

9 Static functions

Select

static int Select (socketlist& readlist, socketlist& writelist, Socketl   

    ist& exceptlist, const poco::timespan& timeout);   
    Determines the status of one or more sockets,///using a call to select ().   
    ReadList contains the list of sockets which should be///to checked for readability.   
    Writelist contains the list of sockets which should be///to checked for writeability.   
    Exceptlist contains a list of sockets which should be///to checked for a pending error.   
    Returns the number of sockets ready. After return,///* ReadList contains those sockets ready for reading,///* writelist C   
    Ontains those sockets ready for writing,///* Exceptlist contains those and sockets with a pending error. If The total number of sockets passed In ReadList, Writelist and///exceptlist is zero, select () would return immediately and the///return Valu   
    E'll be 0. If one of the sockets passed to select () are closed while///Select () runs, select'll return immed Iately.   
    However,///the closed socket won't be included into any list. In this case, the return value may is greater than the sum///of all sockets in all list.

Check to see if IPV4 or IPV6 are supported:

static bool SupportsIPv4 ();

static bool SupportsIPv6 ();

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