File content as of revision 0:1e4a74c2c16f:

/*
Copyright (c) 2011, Senio Networks, Inc.

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.
*/

#include "SimpleSocket.h"
#include <stdarg.h>

ClientSocket::ClientSocket(IpAddr ip, TCPSocket *socket, bool debug)
        : ip(ip), socket(socket), readable(true), writable(true), preread(false),
        state(CONNECTED), debug(debug) {
    if (socket)
        socket->setOnEvent(this, &ClientSocket::onTCPSocketEvent);
}

ClientSocket::ClientSocket(IpAddr ip, int port, float timeout, bool debug)
        : readable(true), writable(true), preread(false), debug(debug) {
    createClientSocket(ip, port, timeout);
}

ClientSocket::ClientSocket(char *hostname, int port, float timeout, bool debug)
        : readable(true), writable(true), preread(false), debug(debug) {
    Resolver resolver;
    createClientSocket(resolver.resolve(hostname, debug), port, timeout);
}

ClientSocket::ClientSocket(const ClientSocket& that) {
    *this = that;
    ::printf("cc called\n");
}

void ClientSocket::createClientSocket(IpAddr ip, int port, float timeout) {
    this->ip = ip;
    socket = new TCPSocket();
    socket->setOnEvent(this, &ClientSocket::onTCPSocketEvent);
    SocketError err = socket->connect(Host(ip, port));
    if (!err) {
        Timer timer;
        timer.start();
        state = CONNECTING;
        while (state == CONNECTING && timer.read() < timeout) {
            Net::poll();
            if (state == CONNECTED)
                return;
            wait_us(100);
        }
    } else
        DBG(SocketError(err));

    writable = false;
    state = DISCONNECTED;
    socket->resetOnEvent();
    socket->close();
    delete socket;
    socket = 0;
}

IpAddr ClientSocket::getIp() {
    return ip;
}

bool ClientSocket::connected() {
    if (socket)
        Net::poll();

    if (!readable && state == DISCONNECTED)
        close();

    return socket != 0;
}

bool ClientSocket::available() {
    if (preread)
        return true;

    if (!readable)
        Net::poll();

    if (readable) {
        char c;
        int ret = socket->recv(&c, 1);
        if (ret > 0) 
        {
            preread = true;
            preread_byte = c;
            return true;
        } 
        else
            readable = false;
    }

    if (!readable && state == DISCONNECTED)
        close();

    return false;
}

void ClientSocket::onTCPSocketEvent(TCPSocketEvent e) {
    DBG(SocketEvent(e));

    switch (e) {
        case TCPSOCKET_CONNECTED:
            state = CONNECTED;
            break;
        case TCPSOCKET_READABLE:
            readable = true;
            break;
        case TCPSOCKET_WRITEABLE:
            writable = true;
            break;
        case TCPSOCKET_DISCONNECTED:
            state = DISCONNECTED;
            break;
    }
}

int ClientSocket::read() {
    char c;

    if (preread) 
    {
        preread = false;
        c = preread_byte;
        return c;
    }

    int ret = socket->recv(&c, 1);
    if (ret > 0) {
        return (int) c & 255;
    } else {
        readable = false;
        return -1;
    }
}

int ClientSocket::read(char *buf, int size) {
    int req = size;

    if (preread && size > 0) 
    {
        preread = false;
        *buf++ = preread_byte;
        req--;
    }

    while (req > 0) 
    {
        int got = socket->recv(buf, req);
        if (got > 0) 
        {
            buf += got;
            req -= got;
        } 
        else 
        {
            readable = false;
            break;
        }
    }

    return size - req;
}

int ClientSocket::scanf(const char* format, ...) {
    va_list argp;
    va_start(argp, format);
    char buf[256];

    int len = read(buf, sizeof(buf) - 1);
    if (len <= 0)
        return 0;
    buf[len] = '\0';

    int ret = vsscanf(buf, format, argp);
    va_end(argp);
    return ret;
}

int ClientSocket::write(char c) {
    return write(&c, 1);
}

int ClientSocket::write(char *buf, int size) {
    int ret = socket->send(buf, size);
    if (ret > 0) {
        return ret;
    } else {
        writable = false;
        return -1;
    }
}

int ClientSocket::printf(const char* format, ...) {
    va_list argp;
    va_start(argp, format);
    char buf[256];

    int len = vsnprintf(buf, sizeof(buf), format, argp);
    va_end(argp);
    return write(buf, len);
}

void ClientSocket::close() {
    if (socket) {
        readable = false;
        writable = false;
        socket->resetOnEvent();
        socket->close();
        delete socket;
        socket = 0;
    }
}

ClientSocket::operator bool() {
    return connected();
}

void ClientSocket::setDebug(bool debug) {
    this->debug = debug;
}