[^SmileY]

Hi folks, how i can detect when remote server is offline?

PHP Code:

#include <amxmodx>
#include <amxmisc>
#include <fakemeta>
#include <sockets>

#define CONNECTION_TIMEOUT 10

new g_Host;
new g_Pass;

new g_Socket;
new g_Forward;
new g_Password[32];
new g_RconChallenge[32];
new g_ConnectionTime;

public plugin_init()
{
    register_plugin("Pug Mod (HLTV)","0.0.1","SmileY");
    
    g_Host = create_cvar("amx_rcon_host","192.168.237.1:27020",FCVAR_NONE,"Remote address");    
    g_Pass = create_cvar("amx_rcon_pass","2133",FCVAR_NONE,"Remote rcon password");
    
    register_concmd("amx_rcon","RconCommand",ADMIN_RCON);
}

public plugin_cfg()
{
    SocketOpen();
}

public plugin_end()
{
    SocketClose();
}

public RconCommand(id,Level)
{
    if(access(id,Level))
    {
        new Command[128];
        read_args(Command,charsmax(Command));
        remove_quotes(Command);
        
        SocketSendCommand(Command);
    }
    
    return PLUGIN_HANDLED;
}

SocketOpen()
{
    if(g_Socket == 0)
    {
        new Host[MAX_IP_WITH_PORT_LENGTH];
        get_pcvar_string(g_Host,Host,charsmax(Host));
        
        get_pcvar_string(g_Pass,g_Password,charsmax(g_Password));
        
        new IP[MAX_IP_LENGTH],Port[6];
        strtok(Host,IP,charsmax(IP),Port,charsmax(Port),':');  
        
        if(IP[0] && Port[0] && g_Password[0])
        {
            new Error;
            g_Socket = socket_open(IP,str_to_num(Port),SOCKET_UDP,Error,SOCK_NON_BLOCKING);

            if(Error == SOCK_ERROR_OK)
            {
                if(socket_is_writable(g_Socket,0))
                {
                    new Data[32];
                    formatex(Data,sizeof(Data),"%c%c%c%cchallenge rcon",0xFF,0xFF,0xFF,0xFF);
                    
                    if(socket_send2(g_Socket,Data,charsmax(Data)) != -1)
                    {
                        g_ConnectionTime = get_systime();
                        
                        g_Forward = register_forward(FM_StartFrame,"SocketRecvChallenge");
                    }
                }
            }
        }
    }
    
    return 0;
}

public SocketRecvChallenge()
{
    if(g_Socket)
    {
        if((get_systime() - g_ConnectionTime) < CONNECTION_TIMEOUT)
        {
            if(socket_is_readable(g_Socket,0))
            {
                new Data[128];
    
                if(socket_recv(g_Socket,Data,charsmax(Data)) > 0)
                {
                    new Dummy[64];
                    parse(Data,Dummy,charsmax(Dummy),Dummy,charsmax(Dummy),g_RconChallenge,charsmax(g_RconChallenge));
                    
                    unregister_forward(FM_StartFrame,g_Forward);
                }
            }
        }
        else
        {
            SocketClose();
        }
    }
}

SocketSendCommand(const Command[])
{
    if(g_Socket)
    {
        if(socket_is_writable(g_Socket,0))
        {
            new Data[128];
            format(Data,charsmax(Data),"%c%c%c%crcon %s ^"%s^" %s",0xFF,0xFF,0xFF,0xFF,g_RconChallenge,g_Password,Command);    
            
            socket_send2(g_Socket,Data,charsmax(Data));
        }
    }
}

SocketClose()
{
    if(socket_close(g_Socket))
    {
        g_Socket = 0;
    }
    
    unregister_forward(FM_StartFrame,g_Forward);
} 


I have set up a variable to check time and disconnect if server do not recv rcon challenge at defined time, but have a way to do it directly with sockets?

Thanks

[iNvectus]

https://www.amxmodx.org/api/sockets/socket_open

PHP Code:

Default error codes:
0 - No error
1 - Error while creating socket
2 - Couldn't resolve hostname
3 - Couldn't connect 


The 3rd is what you are looking for. If you cannot connect, it is offline - either port not opened or it is not connected to internet.

[^SmileY]

Originally Posted by iNvectus https://www.amxmodx.org/api/sockets/socket_open PHP Code: Default error codes: 0 - No error 1 - Error while creating socket 2 - Couldn't resolve hostname 3 - Couldn't connect  The 3rd is what you are looking for. If you cannot connect, it is offline - either port not opened or it is not connected to internet.

Yes i know, but even with remote host offline socket will return 0 no error.
So that is a bug or someting else in sockets module?

Ps. it is a UDP socket!

[Natsheh]

and how do you know the host is offline ?

[^SmileY]

Originally Posted by Natsheh and how do you know the host is offline ?

I'm test it locally, using a hltv.
I simple run the plugin, without open hltv server.
Or just put a invalid address to it.

[iNvectus]

Try something simple to check if your sockets are working correctly. Here is an example plugin:

#include <amxmodx>
#include <sockets>

#define HOST "example.com"

new g_iSocket;

public plugin_init() {
    register_plugin("Socket Test", "1.0", "_");
    set_task("3.0", "tskTestSocket");
}

public tskTestSocket() {
    new iErr = 0;

    g_iSocket = socket_open(HOST, 333, SOCKET_TCP, iErr);

    switch(iErr) {
        case 1: {
            server_print("Error: Unable to create socket!");
            return;
        }

        case 2: {
            server_print("Error: Unable to resolve remote hostname!");
            return;
        }

        case 3: {
            server_print("Error: Unable to connect to host!");
            return;
        }
    }

    server_print("Connection successful!");

    return PLUGIN_CONTINUE;
}

[^SmileY]

i will try when i go to home. Thanks!

[SANTO37]

Hi, I have a problem, I want to send a link to player's ip address on port 10048. If there is a (socket_send) connection, the player is connected.

Thanks to the program, I'm listening to port 10048. But I couldn't provide any success.

img https://imgyukle.com/i/adsiz.E4TIUS

waiting for help