//

// Socket.m

//

// SmallSockets Library (http://smallsockets.sourceforge.net/)

//

// Copyright (C) 2001 Steven Frank (stevenf@panic.com)

//

// This software is provided 'as-is', without any express or implied 

// warranty. In no event will the authors be held liable for any damages 

// arising from the use of this software.

//

// Permission is granted to anyone to use this software for any purpose, 

// including commercial applications, and to alter it and redistribute it 

// freely, subject to the following restrictions:

//

//     1. The origin of this software must not be misrepresented; you must 

//        not claim that you wrote the original software. If you use this 

//        software in a product, an acknowledgment in the product 

//        documentation (and/or about box) would be appreciated but is not 

//        required.

//

//     2. Altered source versions must be plainly marked as such, and must

//        not be misrepresented as being the original software.

//

//     3. This notice may not be removed or altered from any source 

//        distribution.

//        

#import <sys/types.h>

#import <sys/socket.h>

#import <netinet/in.h>

#import "Socket.h"

@implementation Socket

+ (Socket*)socket

//

// Creates a Socket for you, and returns it.  

// The new Socket will be autoreleased, so be sure to retain it if you

// need to keep it around.

//

// Note: Sockets are blocking by default.

//

{

    return [[[Socket alloc] init] autorelease];

}

- (Socket*)acceptConnectionAndKeepListening

//

// Accept a connection on this socket, if it is listening.  May block if

// no connections are pending.  

//

// This variant of acceptConnection will return the connection to the remote host

// to you as a new Socket.  Meanwhile, this existing Socket will continue to 

// listen for connections.

//

{

    struct sockaddr_in acceptAddr;

    int socketfd2 = SOCKET_INVALID_DESCRIPTOR;

    int addrSize = sizeof(acceptAddr);

    // Socket must be created, not connected, and listening

    if ( socketfd == SOCKET_INVALID_DESCRIPTOR )

        [NSException raise:SOCKET_EX_BAD_SOCKET_DESCRIPTOR 

                        format:SOCKET_EX_BAD_SOCKET_DESCRIPTOR];

    if ( connected )

        [NSException raise:SOCKET_EX_ALREADY_CONNECTED 

                        format:SOCKET_EX_ALREADY_CONNECTED];

    if ( !listening )

        [NSException raise:SOCKET_EX_NOT_LISTENING 

                        format:SOCKET_EX_NOT_LISTENING];

    // Accept a remote connection.  Raise on failure

    socketfd2 = accept(socketfd, (struct sockaddr*)&acceptAddr, &addrSize);

    if ( socketfd2 < 0 )

        [NSException raise:SOCKET_EX_ACCEPT_FAILED 

                    format:SOCKET_EX_ACCEPT_FAILED_F, strerror(errno)];

    return [[[Socket alloc] initWithFD:socketfd2 remoteAddress:&acceptAddr] autorelease];

}

@end