API de SMS em C# com código-fonte completo

//*********************************************************************
// API de SMS em C# Ozeki - v1.0.0
// Documentação: https://ozeki-sms-gateway.com/p_5755-c-sharp-sms-api.html
//*********************************************************************

using System;
using OZX;

namespace OzekiConsoleClient
{
    class Program
    {
        static OzxClient Client;

        //*************************************************************
        // Principal
        //*************************************************************

        static void Main(string[] args)
        {
            createClient();
            printWelcome();

            string command = null;
            string parameters;

            while (command != "exit")
            {
                if (!_promptAvailable) printPrompt();
                readCommand(out command, out parameters);
                _promptAvailable = false;
                dispatchCommand(command, parameters);
            }
        }

        //*************************************************************
        // Ler próximo comando
        //*************************************************************
        static bool _promptAvailable;

        static void printPrompt()
        {
            Console.Write("> ");
            _promptAvailable = true;
        }

        static void readCommand(out string command, out string parameters)
        {
            command = Console.ReadLine();
            parameters = null;
            int paramSep = command.IndexOf(' ');
            if (paramSep > -1)
            {
                parameters = command.Substring(paramSep + 1);
                command = command.Substring(0, paramSep);
            }
        }

        static void dispatchCommand(string command, string parameters)
        {
            switch (command)
            {
                case "help":
                    printHelp();
                    break;
                case "exit":
                    Console.WriteLine("Obrigado por usar o Ozeki Client!");
                    break;
                case "connect":
                    connect(parameters);
                    break;
                case "disconnect":
                    disconnect();
                    break;
                case "send":
                    send(parameters);
                    break;
            }
        }

        //*************************************************************
        // Comandos / Boas-vindas
        //*************************************************************

        static void printWelcome()
        {
            Console.WriteLine("**********************************");
            Console.WriteLine("* Bem-vindo ao Ozeki Client v1.0.0 *");
            Console.WriteLine("**********************************");
            Console.WriteLine("Digite 'help' para ver os comandos disponíveis");
        }

        //*************************************************************
        // Comandos / Ajuda
        //*************************************************************

        static void printHelp()
        {
            Console.WriteLine("**********************");
            Console.WriteLine("* Comandos disponíveis *");
            Console.WriteLine("**********************");
            Console.WriteLine("help");
            Console.WriteLine("connect [host:porta] [usuário] [senha]");
            Console.WriteLine("disconnect");
            Console.WriteLine("send [destinatário] [mensagem]");
            Console.WriteLine("exit");
        }

        //*************************************************************
        // Comandos / Conectar
        //*************************************************************

        static void connect(string parameters)
        {
            if (!parseConnectParameters(parameters, out string host, out int port, out string username, out string password, out string errormessage))
            {
                Console.WriteLine("Erro. "+errormessage);
                Console.WriteLine("Sintaxe: connect [host:porta] [usuário] [senha]");
                Console.WriteLine("Exemplo: connect 127.0.0.1:9580 testuser testpass");
            }
            Console.WriteLine("Conectando a "+parameters+"...");
            Client.Connect(host, port, username, password);
        }

        static bool parseConnectParameters(string parameters, out string host, out int port, out string username, out string password, out string errormessage)
        {
            string[] parts = parameters.Split(' ');
            if (parts.Length < 3)
            {
                errormessage = "O comando connect espera 3 parâmetros.";
                username = null;
                password = null;
                host = null;
                port = 0;
                return false;
            }

            string hostandport = parts[0];
            username = parts[1];
            password = parts[2];

            string[] hostandportparts = hostandport.Split(':');
            if (hostandportparts.Length < 2)
            {
                errormessage = "Host e porta inválidos.";
                host = null;
                port = 0;
                return false;                
            }

            host = hostandportparts[0];
            string portstring = hostandportparts[1];

            if (!int.TryParse(portstring, out port))
            {
                errormessage = "Número de porta inválido.";
                port = 0;
                return false;
            }

            errormessage = null;
            return true;
        }

        //*************************************************************
        // Comandos / Desconectar
        //*************************************************************

        static void disconnect()
        {
            Client.Disconnect();
        }

        //*************************************************************
        // Comandos / Enviar
        //*************************************************************

        static void send(string parameters)
        {
            string[] parts = parameters.Split(new char[] { ' ' },2);
            if (parts.Length < 2)
            {
                Console.WriteLine("Erro. O comando send espera 2 parâmetros.");
                Console.WriteLine("Sintaxe: send [destinatário] [mensagem]");
                Console.WriteLine("Exemplo: send +441234567 Olá mundo");
                return;
            }

            string recipient = parts[0];
            string message = parts[1];

            var msg = new OzxMessage();
            msg.ToAddress = recipient;
            msg.Text = message;

            Console.WriteLine("Enviando mensagem. ID: "+msg.ID);
            Client.Send(msg);
        }

        //*************************************************************
        // Criar cliente
        //*************************************************************
        static void createClient()
        {
            Client = new OzxClient();
            Client.AutoReconnect = true;

            Client.OnMessageReceived += Client_OnMessageReceived;
            Client.OnMessageAcceptedForDelivery += Client_OnMessageAcceptedForDelivery;
            Client.OnMessageNotAcceptedForDelivery += Client_OnMessageNotAcceptedForDelivery;
            Client.OnMessageSubmitSuccess += Client_OnMessageSubmitSuccess;
            Client.OnMessageSubmitFailed += Client_OnMessageSubmitFailed;
            Client.OnMessageDeliverySuccess += Client_OnMessageDeliverySuccess;
            Client.OnMessageDeliveryFailed += Client_OnMessageDeliveryFailed;
            Client.OnMessageViewed += Client_OnMessageViewed;
            Client.OnConnected += Client_OnConnected;
            Client.OnDisconnected += Client_OnDisconnected;
        }

        //*************************************************************
        // Eventos de mensagens
        //*************************************************************

        static void Client_OnConnected(object sender, EventArgs e)
        {
            Console.WriteLine("Conectado com sucesso.");
            printPrompt();
        }

        static void Client_OnDisconnected(object sender, OzxArgs< string > e)
        {
            Console.WriteLine("Conexão encerrada. Motivo: " + e.Item.ToString());
            printPrompt();
        }

        static void Client_OnMessageReceived(object sender, OzxArgs< IOzxMessage > e)
        {
            Console.WriteLine("Mensagem recebida: " + e.Item.ToString());
            printPrompt();
        }

        static void Client_OnMessageAcceptedForDelivery(object sender, OzxArgs< string > e)
        {
            Console.WriteLine("Mensagem aceita para entrega. ID: " + e.Item.ToString());
            printPrompt();
        }

        static void Client_OnMessageNotAcceptedForDelivery(object sender, OzxArgs< string, string > e)
        {
            Console.WriteLine("Mensagem rejeitada. ID: " + e.Item1.ToString()+" Motivo: "+e.Item2);
            printPrompt();
        }

        static void Client_OnMessageSubmitSuccess(object sender, OzxArgs< string, DateTime > e)
        {
            Console.WriteLine("Mensagem submetida. ID: "+e.Item1+" Data: "+e.Item2);
            printPrompt();
        }

        static void Client_OnMessageSubmitFailed(object sender, OzxArgs< string, DateTime, string > e)
        {
            Console.WriteLine("Falha ao submeter mensagem. ID: " + e.Item1 + " Data: " + e.Item2+" Motivo: "+e.Item3);
            printPrompt();
        }

        static void Client_OnMessageDeliverySuccess(object sender, OzxArgs< string, DateTime > e)
        {
            Console.WriteLine("Mensagem entregue. ID: " + e.Item1 + " Data: " + e.Item2);
            printPrompt();
        }

        static void Client_OnMessageDeliveryFailed(object sender, OzxArgs< string, DateTime, string > e)
        {
            Console.WriteLine("Falha na entrega da mensagem. ID: " + e.Item1 + " Data: " + e.Item2 + " Motivo: " + e.Item3);
            printPrompt();
        }

        static void Client_OnMessageViewed(object sender, OzxArgs< string, DateTime > e)
        {
            Console.WriteLine("Mensagem visualizada. ID: " + e.Item1 + " Data: " + e.Item2);
            printPrompt();
        }
    }
}

static void createClient()
{
    Client = new OzxClient();
    Client.AutoReconnect = true;
    Client.Connect("192.168.93.192", 9580, "testuser", "testpass");
}