How RMI Clients send the message to the server
i am working in a project where i have to do that when the server send something to client,client can also be able to send the message or something else ect.
please tell me how i will do this
email me [email protected]
The Clients messages to the server are called Callbacks. There is a lotta documenatation for it over the net. So make a search for this key word.
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Message was edited by: AppleTechTalk1100 -
Hello. I would like to write async tcp client and server. I wrote this code but a have a problem, when I call the disconnect method on client or stop method on server. I can't identify that the client or the server is no longer connected.
I thought I will get an exception if the client or the server is not available but this is not happening.
private async void Process()
try
while (true)
var data = await this.Receive();
this.NewMessage.SafeInvoke(Encoding.ASCII.GetString(data));
catch (Exception exception)
How can I determine that the client or the server is no longer available?
Server
public class Server
private readonly Dictionary<IPEndPoint, TcpClient> clients = new Dictionary<IPEndPoint, TcpClient>();
private readonly List<CancellationTokenSource> cancellationTokens = new List<CancellationTokenSource>();
private TcpListener tcpListener;
private bool isStarted;
public event Action<string> NewMessage;
public async Task Start(int port)
this.tcpListener = TcpListener.Create(port);
this.tcpListener.Start();
this.isStarted = true;
while (this.isStarted)
var tcpClient = await this.tcpListener.AcceptTcpClientAsync();
var cts = new CancellationTokenSource();
this.cancellationTokens.Add(cts);
await Task.Factory.StartNew(() => this.Process(cts.Token, tcpClient), cts.Token, TaskCreationOptions.LongRunning, TaskScheduler.Default);
public void Stop()
this.isStarted = false;
foreach (var cancellationTokenSource in this.cancellationTokens)
cancellationTokenSource.Cancel();
foreach (var tcpClient in this.clients.Values)
tcpClient.GetStream().Close();
tcpClient.Close();
this.clients.Clear();
public async Task SendMessage(string message, IPEndPoint endPoint)
try
var tcpClient = this.clients[endPoint];
await this.Send(tcpClient.GetStream(), Encoding.ASCII.GetBytes(message));
catch (Exception exception)
private async Task Process(CancellationToken cancellationToken, TcpClient tcpClient)
try
var stream = tcpClient.GetStream();
this.clients.Add((IPEndPoint)tcpClient.Client.RemoteEndPoint, tcpClient);
while (!cancellationToken.IsCancellationRequested)
var data = await this.Receive(stream);
this.NewMessage.SafeInvoke(Encoding.ASCII.GetString(data));
catch (Exception exception)
private async Task Send(NetworkStream stream, byte[] buf)
await stream.WriteAsync(BitConverter.GetBytes(buf.Length), 0, 4);
await stream.WriteAsync(buf, 0, buf.Length);
private async Task<byte[]> Receive(NetworkStream stream)
var lengthBytes = new byte[4];
await stream.ReadAsync(lengthBytes, 0, 4);
var length = BitConverter.ToInt32(lengthBytes, 0);
var buf = new byte[length];
await stream.ReadAsync(buf, 0, buf.Length);
return buf;
Client
public class Client
private TcpClient tcpClient;
private NetworkStream stream;
public event Action<string> NewMessage;
public async void Connect(string host, int port)
try
this.tcpClient = new TcpClient();
await this.tcpClient.ConnectAsync(host, port);
this.stream = this.tcpClient.GetStream();
this.Process();
catch (Exception exception)
public void Disconnect()
try
this.stream.Close();
this.tcpClient.Close();
catch (Exception exception)
public async void SendMessage(string message)
try
await this.Send(Encoding.ASCII.GetBytes(message));
catch (Exception exception)
private async void Process()
try
while (true)
var data = await this.Receive();
this.NewMessage.SafeInvoke(Encoding.ASCII.GetString(data));
catch (Exception exception)
private async Task Send(byte[] buf)
await this.stream.WriteAsync(BitConverter.GetBytes(buf.Length), 0, 4);
await this.stream.WriteAsync(buf, 0, buf.Length);
private async Task<byte[]> Receive()
var lengthBytes = new byte[4];
await this.stream.ReadAsync(lengthBytes, 0, 4);
var length = BitConverter.ToInt32(lengthBytes, 0);
var buf = new byte[length];
await this.stream.ReadAsync(buf, 0, buf.Length);
return buf;Hi,
Have you debug these two applications? Does it go into the catch exception block when you close the client or the server?
According to my test, it will throw an exception when the client or the server is closed, just log the exception message in the catch block and then you'll get it:
private async void Process()
try
while (true)
var data = await this.Receive();
this.NewMessage.Invoke(Encoding.ASCII.GetString(data));
catch (Exception exception)
Console.WriteLine(exception.Message);
Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
By the way, I don't know what the SafeInvoke method is, it may be an extension method, right? I used Invoke instead to test it.
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How can we send the smartform output to mail.
Dear Friends,
My query is how can we send the smart form output to mail.
In my company,payslip are given to the employee in printed format.instead of that we need to send payslip in mail.how can i do..plz help me.
[email protected]The code below demonstrates how to retrieve a spool request and email it as a PDF document. Please note to process a spool request the program can be executed in background or foreground. Because of the additional functionality to allow this to work in both background and foreground it has made it a little more confusing soyou might want to start by looking at the background only program. Also see transaction SCOT for SAPConnect administration.
*& Report ZSPOOLTOPDF2 *
*& Converts spool request into PDF document and emails it to *
*& recipicant. *
*& Execution *
*& This program can be run in background or online and a spool request *
*& will still be created *
REPORT zspooltopdf2.
PARAMETER: p_email1 LIKE somlreci1-receiver
DEFAULT '[email protected]',
p_sender LIKE somlreci1-receiver
DEFAULT '[email protected]',
p_delspl AS CHECKBOX,
p_online no-display.
*DATA DECLARATION
DATA: gd_recsize TYPE i.
Spool IDs
TYPES: BEGIN OF t_tbtcp.
INCLUDE STRUCTURE tbtcp.
TYPES: END OF t_tbtcp.
DATA: it_tbtcp TYPE STANDARD TABLE OF t_tbtcp INITIAL SIZE 0,
wa_tbtcp TYPE t_tbtcp.
Job Runtime Parameters
DATA: gd_eventid LIKE tbtcm-eventid,
gd_eventparm LIKE tbtcm-eventparm,
gd_external_program_active LIKE tbtcm-xpgactive,
gd_jobcount LIKE tbtcm-jobcount,
gd_jobname LIKE tbtcm-jobname,
gd_stepcount LIKE tbtcm-stepcount,
gd_error TYPE sy-subrc,
gd_reciever TYPE sy-subrc.
DATA: w_recsize TYPE i,
w_spool_nr like sy-spono.
%_print LIKE pri_params.
DATA: gd_subject LIKE sodocchgi1-obj_descr,
it_mess_bod LIKE solisti1 OCCURS 0 WITH HEADER LINE,
it_mess_att LIKE solisti1 OCCURS 0 WITH HEADER LINE,
gd_sender_type LIKE soextreci1-adr_typ,
gd_attachment_desc TYPE so_obj_nam,
gd_attachment_name TYPE so_obj_des.
Spool to PDF conversions
DATA: gd_spool_nr LIKE tsp01-rqident,
gd_destination LIKE rlgrap-filename,
gd_bytecount LIKE tst01-dsize,
gd_buffer TYPE string.
Binary store for PDF
DATA: BEGIN OF it_pdf_output OCCURS 0.
INCLUDE STRUCTURE tline.
DATA: END OF it_pdf_output.
CONSTANTS: c_dev LIKE sy-sysid VALUE 'DEV',
c_no(1) TYPE c VALUE ' ',
c_device(4) TYPE c VALUE 'LOCL'.
*START-OF-SELECTION.
START-OF-SELECTION.
Write statement to represent report output. Spool request is created
if write statement is executed in background. This could also be an
ALV grid which would be converted to PDF without any extra effort
WRITE 'Hello World'.
new-page.
commit work.
new-page print off.
If p_online = 'X'.
Processing performed when program calls itself when run online
gd_spool_nr = sy-spono.
EXPORT gd_spool_nr TO MEMORY ID 'SPOOLTOPDF'.
EXIT.
endif.
IF sy-batch EQ 'X'.
PERFORM get_job_details.
PERFORM obtain_spool_id.
ELSE.
gd_spool_nr = sy-spono.
If executed online, it submits a program to perform the write statements
instructing it to create a spool request, this could be another program
which just performs the write statements and then exports sy-spono
to memory. But in this example it calls itself passing X to parameter
p_online, which takes it down an alternative procesing path.
submit ZSPOOLTOPDF2
with p_online = 'X'
to sap-spool
spool parameters %_print
archive parameters %_print
without spool dynpro
and return.
ENDIF.
Get spool id from program called above
IMPORT gd_spool_nr FROM MEMORY ID 'SPOOLTOPDF'.
PERFORM convert_spool_to_pdf.
PERFORM process_email.
if p_delspl EQ 'X'.
PERFORM delete_spool.
endif.
IF sy-sysid = c_dev.
wait up to 5 seconds.
SUBMIT rsconn01 WITH mode = 'INT'
WITH output = 'X'
AND RETURN.
ENDIF.
FORM obtain_spool_id *
FORM obtain_spool_id.
CHECK NOT ( gd_jobname IS INITIAL ).
CHECK NOT ( gd_jobcount IS INITIAL ).
SELECT * FROM tbtcp
INTO TABLE it_tbtcp
WHERE jobname = gd_jobname
AND jobcount = gd_jobcount
AND stepcount = gd_stepcount
AND listident <> '0000000000'
ORDER BY jobname
jobcount
stepcount.
READ TABLE it_tbtcp INTO wa_tbtcp INDEX 1.
IF sy-subrc = 0.
message s004(zdd) with gd_spool_nr.
gd_spool_nr = wa_tbtcp-listident.
MESSAGE s004(zdd) WITH gd_spool_nr.
ELSE.
MESSAGE s005(zdd).
ENDIF.
ENDFORM.
FORM get_job_details *
FORM get_job_details.
Get current job details
CALL FUNCTION 'GET_JOB_RUNTIME_INFO'
IMPORTING
eventid = gd_eventid
eventparm = gd_eventparm
external_program_active = gd_external_program_active
jobcount = gd_jobcount
jobname = gd_jobname
stepcount = gd_stepcount
EXCEPTIONS
no_runtime_info = 1
OTHERS = 2.
ENDFORM.
FORM convert_spool_to_pdf *
FORM convert_spool_to_pdf.
CALL FUNCTION 'CONVERT_ABAPSPOOLJOB_2_PDF'
EXPORTING
src_spoolid = gd_spool_nr
no_dialog = c_no
dst_device = c_device
IMPORTING
pdf_bytecount = gd_bytecount
TABLES
pdf = it_pdf_output
EXCEPTIONS
err_no_abap_spooljob = 1
err_no_spooljob = 2
err_no_permission = 3
err_conv_not_possible = 4
err_bad_destdevice = 5
user_cancelled = 6
err_spoolerror = 7
err_temseerror = 8
err_btcjob_open_failed = 9
err_btcjob_submit_failed = 10
err_btcjob_close_failed = 11
OTHERS = 12.
CHECK sy-subrc = 0.
Transfer the 132-long strings to 255-long strings
LOOP AT it_pdf_output.
TRANSLATE it_pdf_output USING ' ~'.
CONCATENATE gd_buffer it_pdf_output INTO gd_buffer.
ENDLOOP.
TRANSLATE gd_buffer USING '~ '.
DO.
it_mess_att = gd_buffer.
APPEND it_mess_att.
SHIFT gd_buffer LEFT BY 255 PLACES.
IF gd_buffer IS INITIAL.
EXIT.
ENDIF.
ENDDO.
ENDFORM.
FORM process_email *
FORM process_email.
DESCRIBE TABLE it_mess_att LINES gd_recsize.
CHECK gd_recsize > 0.
PERFORM send_email USING p_email1.
perform send_email using p_email2.
ENDFORM.
FORM send_email *
--> p_email *
FORM send_email USING p_email.
CHECK NOT ( p_email IS INITIAL ).
REFRESH it_mess_bod.
Default subject matter
gd_subject = 'Subject'.
gd_attachment_desc = 'Attachname'.
CONCATENATE 'attach_name' ' ' INTO gd_attachment_name.
it_mess_bod = 'Message Body text, line 1'.
APPEND it_mess_bod.
it_mess_bod = 'Message Body text, line 2...'.
APPEND it_mess_bod.
If no sender specified - default blank
IF p_sender EQ space.
gd_sender_type = space.
ELSE.
gd_sender_type = 'INT'.
ENDIF.
Send file by email as .xls speadsheet
PERFORM send_file_as_email_attachment
tables it_mess_bod
it_mess_att
using p_email
'Example .xls documnet attachment'
'PDF'
gd_attachment_name
gd_attachment_desc
p_sender
gd_sender_type
changing gd_error
gd_reciever.
ENDFORM.
FORM delete_spool *
FORM delete_spool.
DATA: ld_spool_nr TYPE tsp01_sp0r-rqid_char.
ld_spool_nr = gd_spool_nr.
CHECK p_delspl <> c_no.
CALL FUNCTION 'RSPO_R_RDELETE_SPOOLREQ'
EXPORTING
spoolid = ld_spool_nr.
ENDFORM.
*& Form SEND_FILE_AS_EMAIL_ATTACHMENT
Send email
FORM send_file_as_email_attachment tables it_message
it_attach
using p_email
p_mtitle
p_format
p_filename
p_attdescription
p_sender_address
p_sender_addres_type
changing p_error
p_reciever.
DATA: ld_error TYPE sy-subrc,
ld_reciever TYPE sy-subrc,
ld_mtitle LIKE sodocchgi1-obj_descr,
ld_email LIKE somlreci1-receiver,
ld_format TYPE so_obj_tp ,
ld_attdescription TYPE so_obj_nam ,
ld_attfilename TYPE so_obj_des ,
ld_sender_address LIKE soextreci1-receiver,
ld_sender_address_type LIKE soextreci1-adr_typ,
ld_receiver LIKE sy-subrc.
data: t_packing_list like sopcklsti1 occurs 0 with header line,
t_contents like solisti1 occurs 0 with header line,
t_receivers like somlreci1 occurs 0 with header line,
t_attachment like solisti1 occurs 0 with header line,
t_object_header like solisti1 occurs 0 with header line,
w_cnt type i,
w_sent_all(1) type c,
w_doc_data like sodocchgi1.
ld_email = p_email.
ld_mtitle = p_mtitle.
ld_format = p_format.
ld_attdescription = p_attdescription.
ld_attfilename = p_filename.
ld_sender_address = p_sender_address.
ld_sender_address_type = p_sender_addres_type.
Fill the document data.
w_doc_data-doc_size = 1.
Populate the subject/generic message attributes
w_doc_data-obj_langu = sy-langu.
w_doc_data-obj_name = 'SAPRPT'.
w_doc_data-obj_descr = ld_mtitle .
w_doc_data-sensitivty = 'F'.
Fill the document data and get size of attachment
CLEAR w_doc_data.
READ TABLE it_attach INDEX w_cnt.
w_doc_data-doc_size =
( w_cnt - 1 ) * 255 + STRLEN( it_attach ).
w_doc_data-obj_langu = sy-langu.
w_doc_data-obj_name = 'SAPRPT'.
w_doc_data-obj_descr = ld_mtitle.
w_doc_data-sensitivty = 'F'.
CLEAR t_attachment.
REFRESH t_attachment.
t_attachment[] = it_attach[].
Describe the body of the message
CLEAR t_packing_list.
REFRESH t_packing_list.
t_packing_list-transf_bin = space.
t_packing_list-head_start = 1.
t_packing_list-head_num = 0.
t_packing_list-body_start = 1.
DESCRIBE TABLE it_message LINES t_packing_list-body_num.
t_packing_list-doc_type = 'RAW'.
APPEND t_packing_list.
Create attachment notification
t_packing_list-transf_bin = 'X'.
t_packing_list-head_start = 1.
t_packing_list-head_num = 1.
t_packing_list-body_start = 1.
DESCRIBE TABLE t_attachment LINES t_packing_list-body_num.
t_packing_list-doc_type = ld_format.
t_packing_list-obj_descr = ld_attdescription.
t_packing_list-obj_name = ld_attfilename.
t_packing_list-doc_size = t_packing_list-body_num * 255.
APPEND t_packing_list.
Add the recipients email address
CLEAR t_receivers.
REFRESH t_receivers.
t_receivers-receiver = ld_email.
t_receivers-rec_type = 'U'.
t_receivers-com_type = 'INT'.
t_receivers-notif_del = 'X'.
t_receivers-notif_ndel = 'X'.
APPEND t_receivers.
CALL FUNCTION 'SO_DOCUMENT_SEND_API1'
EXPORTING
document_data = w_doc_data
put_in_outbox = 'X'
sender_address = ld_sender_address
sender_address_type = ld_sender_address_type
commit_work = 'X'
IMPORTING
sent_to_all = w_sent_all
TABLES
packing_list = t_packing_list
contents_bin = t_attachment
contents_txt = it_message
receivers = t_receivers
EXCEPTIONS
too_many_receivers = 1
document_not_sent = 2
document_type_not_exist = 3
operation_no_authorization = 4
parameter_error = 5
x_error = 6
enqueue_error = 7
OTHERS = 8.
Populate zerror return code
ld_error = sy-subrc.
Populate zreceiver return code
LOOP AT t_receivers.
ld_receiver = t_receivers-retrn_code.
ENDLOOP.
ENDFORM.
Regards,
Shakti Barath -
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Best RegardsHello
After conferring with a colleague, the following response may help:
The Smart Form doesn't have any special integration in WebDynpro.
Therefore the application should implement it especially.
Steps:
1) Call of Smart Forms in mode GET_OTF
2) Convert OTF to PDF
3) Show the PDF in WD Context Node
Similar topic was discussed here:
Re: Displaying Smartforms in Webdynpro ABAP
Thanks
Kind Regards
Toros Aledjian
Edited by: Toros Aledjian on Nov 29, 2010 8:43 AM -
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