// ON SEND MAIL
int onSendMail() {
String inBuffer;
String outBuffer;
Socket sock;
SMTPInputStream fromServer;
SMTPOutputStream toServer;
int intPort;
// TEST RECIPIENT ADDRESS it must be at once
if (reciverMail.getText().length() < 1) {
infoArea.Println("enter recipient please ...");
return -1;
}
// TEST PORT NUMBER FORMAT and ALERT WHEN NOT 25
intPort = -1;
infoArea.Clear();
infoArea.Println("check port ...");
try {
intPort = Integer.valueOf(smtpPort.getText()).intValue();
if ((intPort < 0) || (intPort > 65356)) {
infoArea.Println("invalid port ...");
return -1;
}
if (intPort != 25) infoArea.Println("attention port is not 25 ...");
infoArea.Println("port number is " + smtpPort.getText());
} catch (NumberFormatException e) {
infoArea.Println("invalid port ...");
return -1;
}
// CREATE SMTP CONNECTION
infoArea.Println("connect to server ...");
try {
sock = new Socket(smtpServer.getText(), intPort);
} catch (IOException e) {
infoArea.Println("unable to connect(SK) ... " + e);
return -1;
}
// CREATE SERVER STREAMS
// INPUT STREAM
try {
fromServer = new SMTPInputStream(sock);
} catch (IOException e) {
infoArea.Println("unable to connect(IS) ...");
return -1;
}
// OUTPUT STREAM
try {
toServer = new SMTPOutputStream(sock);
} catch (IOException e) {
infoArea.Println("unable to connect(OS) ...");
return -1;
}
infoArea.Println("connected ...");
// Mail Sending
infoArea.Println("sending mail ...");
// *******************************************************************
try {
int i = doSMTPTransaction(fromServer, toServer);
if (i == 0) infoArea.Println("complete ...");
else infoArea.Println("error ...");
} catch (IOException e) {
infoArea.Println("error ...");
}
// *******************************************************************
// CLOSE SERVER STREAMS
// OUTPUT STREAM
infoArea.Println("disconnect from server ...");
try {
toServer.Close();
} catch (IOException e) {
infoArea.Println("alert OUTPUT STREAM ...");
}
// INPUT STREAM
try {
fromServer.Close();
} catch (IOException e) {
infoArea.Println("alert INPUT STREAM ...");
}
// CLOSE CONNECTION
try {
sock.close();
infoArea.Println("disconnected ...");
} catch (IOException e) {
infoArea.Println("unable to disconnect ...");
return -1;
}
return 0;
}
int doSMTPTransaction(SMTPInputStream in, SMTPOutputStream out) throws IOException {
int replyCode;
Date today = new Date();
// GET SERVER RESPONSE on CONNECTION ESTABLISHMENT
// WAIT FOR RESPONSE (WAIT_TIMEOUT) millis
// NOT RESPONSE ON CONNECT ERROR CODE 1
replyCode = waitForTimeout(in);
if (replyCode == 0) {
infoArea.Println("NOT RESPONSE ON CONNECT ERROR CODE 1");
return 1;
}
if (replyCode == -1) {
infoArea.Println("UNKNOWN REPLY CODE ERROR CODE 4");
return 4;
}
if (replyCode != SMTP_RCODE_READY) {
infoArea.Println("UNSUCCESS CONNECTION ");
return replyCode;
}
infoArea.Println("connection response is OK");
infoArea.Println("request HELO");
// SEND HELO CRLF
out.WriteToStream(SMTPCommand[SMTP_CMD_HELO]);
out.WriteToStream(SMTPCommand[SMTP_CMD_SPC]);
out.WriteToStream("127.0.0.1");
out.WriteToStream(SMTPCommand[SMTP_CMD_CRLF]);
// WAIT FOR RESPONSE ON HELO
replyCode = waitForTimeout(in);
if (replyCode == 0) {
infoArea.Println("NOT RESPONSE TO HELO ERROR CODE 2");
return 2;
}
if (replyCode == -1) {
infoArea.Println("UNKNOWN REPLY CODE ERROR CODE 4");
return 4;
}
if (replyCode != SMTP_RCODE_COMPLETED) {
infoArea.Println("UNABLE TO COMPLETE REPLY");
return replyCode;
}
infoArea.Println("HELO response is OK");
infoArea.Println("request MAIL FROM");
// SEND MAIL FROM: SPC <sender> CRLF
out.WriteToStream(SMTPCommand[SMTP_CMD_MAIL_FROM]);
out.WriteToStream(SMTPCommand[SMTP_CMD_SPC]);
out.WriteToStream(senderMail.getText());
out.WriteToStream(SMTPCommand[SMTP_CMD_CRLF]);
// WAIT FOR RESPONSE ON MAIL FROM
replyCode = waitForTimeout(in);
if (replyCode == 0) {
infoArea.Println("NOT RESPONSE TO HELO ERROR CODE 2");
return 2;
}
if (replyCode == -1) {
infoArea.Println("UNKNOWN REPLY CODE ERROR CODE 4");
return 4;
}
if (replyCode != SMTP_RCODE_COMPLETED) {
infoArea.Println("UNABLE TO COMPLETE REPLY");
return replyCode;
}
infoArea.Println("MAIL FROM response is OK");
infoArea.Println("request RCPT TO");
// SEND RCPT TO: SPC <sender> CRLF
out.WriteToStream(SMTPCommand[SMTP_CMD_RCPT_TO]);
out.WriteToStream(SMTPCommand[SMTP_CMD_SPC]);
out.WriteToStream(reciverMail.getText());
out.WriteToStream(SMTPCommand[SMTP_CMD_CRLF]);
// WAIT FOR RESPONSE ON RCPT TO
replyCode = waitForTimeout(in);
if (replyCode == 0) {
infoArea.Println("NOT RESPONSE TO HELO ERROR CODE 2");
return 2;
}
if (replyCode == -1) {
infoArea.Println("UNKNOWN REPLY CODE ERROR CODE 4");
return 4;
}
if ((replyCode != SMTP_RCODE_COMPLETED) && (replyCode != SMTP_RCODE_FORWARD)) {
infoArea.Println("UNABLE TO COMPLETE REPLY");
return replyCode;
}
infoArea.Println("RCPT TO response is OK");
// TRY TO SEND TO CC
if ((ccMail.getText().length()) > 0) {
infoArea.Println("request CC RCPT TO");
// SEND RCPT TO: SPC <sender> CRLF
out.WriteToStream(SMTPCommand[SMTP_CMD_RCPT_TO]);
out.WriteToStream(SMTPCommand[SMTP_CMD_SPC]);
out.WriteToStream(ccMail.getText());
out.WriteToStream(SMTPCommand[SMTP_CMD_CRLF]);
// WAIT FOR RESPONSE ON RCPT TO
replyCode = waitForTimeout(in);
if (replyCode == 0) {
infoArea.Println("NOT RESPONSE TO HELO ERROR CODE 2");
return 2;
}
if (replyCode == -1) {
infoArea.Println("UNKNOWN REPLY CODE ERROR CODE 4");
return 4;
}
if ((replyCode != SMTP_RCODE_COMPLETED) && (replyCode != SMTP_RCODE_FORWARD)) {
infoArea.Println("UNABLE TO COMPLETE CC");
} else {
infoArea.Println("CC.RCPT TO response is OK");
}
}
// TRY TO SEND TO BCC
if ((bccMail.getText().length()) > 0) {
// SEND RCPT TO: SPC <sender> CRLF
out.WriteToStream(SMTPCommand[SMTP_CMD_RCPT_TO]);
out.WriteToStream(SMTPCommand[SMTP_CMD_SPC]);
out.WriteToStream(bccMail.getText());
out.WriteToStream(SMTPCommand[SMTP_CMD_CRLF]);
// WAIT FOR RESPONSE ON RCPT TO
replyCode = waitForTimeout(in);
if (replyCode == 0) {
infoArea.Println("NOT RESPONSE TO HELO ERROR CODE 2");
return 2;
}
if (replyCode == -1) {
infoArea.Println("UNKNOWN REPLY CODE ERROR CODE 4");
return 4;
}
if ((replyCode != SMTP_RCODE_COMPLETED) && (replyCode != SMTP_RCODE_FORWARD)) {
infoArea.Println("UNABLE TO COMPLETE BCC");
} else {
infoArea.Println("BCC.RCPT TO response is OK");
}
}
infoArea.Println("request DATA");
// SEND DATA CRLF
out.WriteToStream(SMTPCommand[SMTP_CMD_DATA]);
out.WriteToStream(SMTPCommand[SMTP_CMD_CRLF]);
// WAIT FOR RESPONSE ON DATA
replyCode = waitForTimeout(in);
if (replyCode == 0) {
infoArea.Println("NOT RESPONSE TO HELO ERROR CODE 2");
return 2;
}
if (replyCode == -1) {
infoArea.Println("UNKNOWN REPLY CODE ERROR CODE 4");
return 4;
}
if (replyCode != SMTP_RCODE_MAIL_START) {
infoArea.Println("UNABLE TO COMPLETE REPLY");
return replyCode;
}
infoArea.Println("DATA response is OK");
infoArea.Println("request DATA");
// SEND mail content CRLF.CRLF
out.WriteToStream("Subject: " + subjectMail.getText());
out.WriteToStream(SMTPCommand[SMTP_CMD_CRLF]);
out.WriteToStream("From: " + senderMail.getText());
out.WriteToStream(SMTPCommand[SMTP_CMD_CRLF]);
out.WriteToStream("To: " + reciverMail.getText());
out.WriteToStream(SMTPCommand[SMTP_CMD_CRLF]);
out.WriteToStream("Date: " + today.toString());
out.WriteToStream(SMTPCommand[SMTP_CMD_CRLF]);
out.WriteToStream(SMTPCommand[SMTP_CMD_CRLF]);
out.WriteToStream(bodyMail.getText());
out.WriteToStream(SMTPCommand[SMTP_CMD_CRLF_CRLF]);
// WAIT FOR RESPONSE ON mail content CRLF.CRLF
replyCode = waitForTimeout(in);
if (replyCode == 0) {
infoArea.Println("NOT RESPONSE TO HELO ERROR CODE 2");
return 2;
}
if (replyCode == -1) {
infoArea.Println("UNKNOWN REPLY CODE ERROR CODE 4");
return 4;
}
if (replyCode != SMTP_RCODE_COMPLETED) {
infoArea.Println("UNABLE TO COMPLETE REPLY");
return replyCode;
}
infoArea.Println("mail content response is OK");
infoArea.Println("request QUIT");
// SEND QUIT CRLF
out.WriteToStream(SMTPCommand[SMTP_CMD_QUIT]);
out.WriteToStream(SMTPCommand[SMTP_CMD_CRLF]);
// WAIT FOR RESPONSE (WAIT_TIMEOUT) millis
// NOT RESPONSE TO QUIT ERROR CODE 3
replyCode = waitForTimeout(in);
if (replyCode == 0) {
infoArea.Println("NOT RESPONSE TO QUIT ERROR CODE 3");
return 3;
}
if (replyCode == -1) {
infoArea.Println("UNKNOWN REPLY CODE ERROR CODE 4");
return 4;
}
if (replyCode != SMTP_RCODE_CLOSING) {
infoArea.Println("UNCLOSED CONNECTION REPLY");
return replyCode;
}
infoArea.Println("QUIT response is BYE");
infoArea.Println("end of SMTP transaction");
// TRANSACTION OK ERROR CODE 0
return 0;
}