Send() and recv() problem

I have a problem using send() and recv() function in the socket programming.
client side:
while(1)
char* client_buffer="test";
send(connectSocket, client_buffer, strlen(client_buffer)+1, 0)
server side:
while(1)
recv(connectSocket, server_buffer, 5, 0)
cout<<server_buffer<<endl;
Output:
test
est
The server_buff will not be refilled till it filled up. Is there any method that the code can output two "test" instead of "test" and "est"?
test
test
Thank you in advance!

Why are you asking a C++ question on a Java forum?And here's an even better question... why does she keep doing it?
Rachel take your C++ questions to a C++ forum. These forums are for Java.

Similar Messages

  • Winsock send and recv problem

    I have an application that sends and receives small packets of data on a tcp/ip socket.
    My application sends the data and then waits for a response.
    My applications works great in debug mode but when I try it in release mode I have problems.
    I will be sending data packets using:
       sendStatus = send( cmdSock, (char *)msg, msgLen, 0 );
       if( sendStatus == SOCKET_ERROR )
         // Send error
    And receiving:
       if( select( 0, &readfds, 0, 0, &timeout ) == 0 )
         // socket timed out
      status = recv( cmdSock, (char *)msg, msgLen, 0 );
       if( status == SOCKET_ERROR )
         // recv error
    The application will be sending many packets about every 1 second. Then randomly, a packet will fail because of a socket timed out.
    When the error occurs:
    The send command sends the data, No SOCKET_ERROR comes back.
    The recv command times out waiting for the response.
    When the error occurs the application that is receiving the data packets never received the data packet, and thus does not respond.
    Again this ONLY happens in Release configuration, it NEVER fails in Debug configuration.
    Has anyone ever seen an issue like this?
    Thanks!
    John W.

    Hey jwinterb,
    Could you be a little more specific on what the error is you actually seeing? What is the error code you are seeing if any? Could you post your CVI project so others can look at the code? Are you able to run a CVI TCP/IP example with no issues? Help » Example Finder » TCP/IP 
    BeauH
    Applications Engineer
    National Instruments

  • Another send and receive problem

    We have three accounts setup on our iMac. Mine, my wife, and our children.
    My account and the kids have no problem sending or recieving email. But my wife can only send and receive emails hit and miss. We are all using the same pop account, so I have those setting correct. Some times she gets the prompt asking to retry send. Some times it just takes them off line.
    Any ideas?

    The easiest fix would be to just use safari and a webmail interface.
    For example, I have yahoo in my mail app. But on some internet connections it just won't work, so I use safari to get to yahoo.com and access my mail that way.
    Your mail provider should have a web interface and you could use that.

  • Apple Mail send and receive problems, Network Solutions

    Hello Everyone,
    I'm currently facing a problem with a company email account that we have with network solutions.
    NSmail Pro (IMAP) that is configured with apple mail. Here are the settings that i have:
    Incoming mail: mail.(company.domain).com
    Port: 110
    SSL: No
    Outgoing mail: smtp.(company.domain).com
    Port: 2525
    SSL: No
    Auth: Password
    Whenever i'm at the office, I can send and receive emails without any problems (Using mail app), but when i'm at home i can't receive emails nor send one.
    I'm wondering if this has something to do with the Mail application, cause i can access the email using the webmail on a browser without any problems (either at home or at the Office).
    Any thoughts from our experts?

    I'm guessing that when you are at the office, you are probably accessing a company network and the company mail will only work with those settings on the company network. You may need to discuss this with your IT department at work to see if it need a different configuration for outside access.
    The fact that it works at work and not at home indicates a that it surely an issue with the connection setup.
    Assuming that you are accessing it through wi-Fi at both locations, do you have different wi-Fi connections set up on you Mac in Network Preferences, or is it the same wi-Fi connection used for both? In other words, do you have a specific wifi setup on your computer for connecting at the office?

  • Exchange server 2013 mail send and received problem

    Hi Support,
    I have Install Exchange server 2013 and create mail box and local send received locally but days back i have not able to mail send and received. what setting are required for user mail send and received locally. and how to create mx and txt record for my
    domain.

    Hi,
    According to your description, I know that the Exchange server can send/receive internally at beginning, however doesn’t work now. Please correct me if there is anything misunderstand.
    Great checklist from S.Nithyanandham. Additionally, how about sending/receiving via OWA? And any error messages when can’t send and receive?
    Please make sure the Message Tracking has been enabled and run following command to output track log and check detail information:
    Get-MessageTrackingLog |FL > "c:\Track Search.txt"
    For more information about Message Tracking logs, please refer to below article:
    http://technet.microsoft.com/en-us/library/bb124926
    If you want to communicate externally, you need to contact ISP to register DNS MX record.
    Best Regards,
    Allen Wang

  • E75 send and receive problem

    I have had my e 75 for about a month.  Two days ago it started to continuously send and receive all the emails in the inbox.  The number of emails will reduce to zero and then they all come back again then return to zero then come back on and on.  they stop when I select disconnect.  No idea why this has just started happening as it was fine for 3 - 4 weeks.  any ideas?

    I have had my e 75 for about a month.  Two days ago it started to continuously send and receive all the emails in the inbox.  The number of emails will reduce to zero and then they all come back again then return to zero then come back on and on.  they stop when I select disconnect.  No idea why this has just started happening as it was fine for 3 - 4 weeks.  any ideas?

  • Thunderbird works fine, Apple Mail can't send (and other problems)

    I have both Thunderbird and Mail setup exactly alike. Thunderbird can send mail just fine, every time, from any location. Mail was able to send messages a few times but for the last few days refuses to send anything.
    Here's the setup:
    Four smtp servers
    mail.bellsouth.net
    mailer.louisiana.edu
    smtp.coxmail.com
    smtp.central.cox.net
    each is setup with password SSL authentication. Each works just fine on any other computer and even on this one with Thunderbird. Apple Mail is the only problem. (and yes - ALL SETTINGS ARE EXACTLY CORRECT)
    NO - port 25 is NOT the issue - it works fine with other software on this computer and others - it is ONLY Apple Mail which can't manage to connect to the servers.
    I use an AirPort extreme and have reset it repeatedly. (I can usually connect to an smtp after doing so but only until Mail attempts to send) I have tried a direct ethernet connection as well. Same results.
    Mail refuses to connect to any smtp server. (it connects to the POP servers just fine) Occasionally, if I retype in the smtp password, or even delete it and turn off SSL, it will connect for a short time. (until I try to send a message)
    What's the deal?
    I see others have similar problems, but all seem to be ISP related. In this case, I've controlled for everything I can think except Apple Mail.
    A few other problems, maybe related or not:
    Mail has NEVER saved any messages I have sent out in any type of 'sent' folder. Sometimes the folder appears, sometimes it doesn't, but it is always empty. And yes, the setting to 'delete messages in the sent folder' is set to NEVER. So they should all be there.
    Additionally, the very FIRST note I created was saved in my Inbox as it should have been. NOT ONE single subsequent note has saved - I lost every one of them. (I also can't seem to find any means to manually save the note - how ridiculous)
    Finally, though it isn't that important at the moment, when Mail can't manage to connect to an smtp server, it just sits there and tries to send forever. Sometimes it will tell me it failed and suggest another server, sometimes not. In all cases, there does not seem to be a "STOP" button or command to tell Mail to quit transmitting/receiving.
    I'd really like to use this program since it integrates with iCal and Addressbook, but this is getting absurd.
    Thanks for any help anyone can provide.

    Who is your isp?
    If it is Cox they say on their site that you have to use only their smtp server.
    Other than the mailer server (of which I have no info), I question the ssl setting.
    Cox specifically say to not use ssl when setting up the outgoing server.
    Bellsouth do not appear to require authentication and do not use ssl either.
    AT&T Help Center Online: How To: Set Up Your AT&T Email Account Using Apple Mail 2.1 on a Mac OS 10
    http://help.bellsouth.net/bellsouth/asp/contentview.asp?isbrowse=true&sprt_cid=d 5442d40-acde-4d94-9192-0ae128b2ca78
    "each is setup with password SSL authentication. Each works just fine on any other computer"
    Are any of the other computers mac's?
    You say that "it works fine with other software on this computer" - what is this other software that is using ssl and port 25 to connect to the smtp servers?
    Port 25 is not used for ssl, use either 587 (standard) or in some cases 465 (non-standard).

  • Blackberry email send and receive problem

    Personal e-mail sent from PC, PC and Blackberry also can receive the e-mail. When i sent from Blackberry, PC can receive the e-mail but Blackberry can't receive the e-mail 

    Hi again,
    OK...so just to see if I understand correctly:
    kendalfung wrote:
     1. My Setting is own email server forward personal email to BB account. 
    You have your own personal email system (POP, IMAP, something) that is not a public (e.g., GMail, Yahoo, HotMail, etc.) email system, but it does face the internet. You have, on that server, some rules that are forwarding certain emails to a "BB account"...I'm not sure what "BB account" that specifically is. Is that an @carrier or @RIM email account?
    kendalfung wrote:
     2. PC using outlook/OE sent to personal email account, BB and PC also can receive the email.
    Using PC-based Outlook or Outlook Express, you are sending (as "TO") to that same email account hosted on your own personal email system. When you do that, both the BB and Outlook/OE receive the email just fine (I am assuming the PC via POP to your personal email system; the BB, by virtue of your server-based forwarding rule, though it is still undefined as to if you mean the @Carrier or @RIM BB email account that I mentioned above).
    kendalfung wrote:
     3. BB sent to personal email, PC can receive the email but BB can't receive the email 
    When you create a new email on your BB, sending "To" that email account hosted on your own personal email system, the Email never arrives to your BB but it arrives on your PC/Outlook/OE just fine.
    If all of that is correct, it would seem to me that the fault lies in the forwarding rule on your email server...it is forwarding emails that it receives by virtue of your Outlook/OE (whatever outbound email relay they are using) but it is not forwarding emails that arrive from the RIM SMTP gateways (which is where all outbound, from the BB, emails come from...the RIM SMTP gateways, not your own).
    kendalfung wrote:
    My setting is working before.
    Before what? What changed?
    Occam's Razor nearly always applies when troubleshooting technology issues!
    If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
    Join our BBM Channels
    BSCF General Channel
    PIN: C0001B7B4   Display/Scan Bar Code
    Knowledge Base Updates
    PIN: C0005A9AA   Display/Scan Bar Code

  • Seemingly random email sending and receiving problems

    I am visiting some friends and have been able to access their Wifi no problem--surfing, streaming and getting some emails easily. 
    Today I noticed, after a few hours of doing some work and personal emailing, that some of my emails have not been going out.  I use Yahoo and Exchange for personal and work, respectively.
    I see one email sitting in the iPad mail app's "outbox" and all the others are nowhere to be found.  When I check on l
    Iine to my account via the Yahoo or Exchange websites, I can't find these sent messages in the "sent" folder. 
    At the same time, I saw that, in my Exchange account, I've received a bunch of emails but they have not appeared in the iPad2's Mail app.
    This is an odd glitch, and I wonder if there could be a problem with how I've set up ths particular wifi access.   I am going to go check this out at a Starbucks or some other place with free Wifi that I've used before, but if I could get any hints as to what settings to check, that would help me do some troubleshooting, I'd really appreciate it.
    Dan

    Hi Russa:
    That is usually caused by an ISP having server issues. I do not know of anything in Mail that would delay mail. I suggest you contact your ISP to see if they will acknowledge problems.
    Barry

  • Send and Recieve Problems on IMAC

    Hello,
    I am new to the comunity. Can anyone help me as I am at wits end.
    Today I have tried to download my e-mails on Outlook on my IMac (as usual) but it just begins to download all of my e-mails from my e-mail address.
    I do not want to download 14000+e-mails and have tried to correct this  but to no avail.
    Can anyone advise the correct way to stop this and just download my day to day e mails
    Many thanks!

    Most of use here don't use Outlook however there is a forum for MS Office for Mac. You can reach it by clicking the Office for Mac Product Forums link.
    Good luck!

  • Send and receive SMS

    Hello!
    Please, can anyone tell me how can I create an application which send and receive SMS at the same time.
    I�ve got an GSM modem. This application must run under Linux. I did it with Windows 98 and it ran fine, but when I try run it under linux I only can send or receive, but not both. I think this is because there are problems with threats ( I'm not sure ), when I created a ServerSocket to accept the socket connection to send messages.
    I don�t know how resolve the problem. I attach the code here:
    import java.io.*;
    import java.util.*;
    import javax.comm.*;
    import java.net.*;
    public class SimpleRead implements Runnable, SerialPortEventListener {
    static CommPortIdentifier portId;
    static Enumeration portList;
    final static String CR_LF="\r";
    final static String AT_ENVIAR="AT+CMGS=";
    final static char CTRL_Z = 26;
    final static String AT_RECIBIR="AT+CMGR=";
    final static String AT_BORRAR="AT+CMGD=";
    InputStream inputStream;
    OutputStream outputStream;
    SerialPort serialPort;
    Thread readThread;
    Thread sendThread;
    Send s ;
    public static void main(String[] args) {
    portList = CommPortIdentifier.getPortIdentifiers();
    while (portList.hasMoreElements()) {
    portId = (CommPortIdentifier) portList.nextElement();
    if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) {
    if (portId.getName().equals("/dev/ttyS0")) {
    SimpleRead reader = new SimpleRead();
    }//fin while
    }//fin m�todo main
    public SimpleRead() {
    try {
    serialPort = (SerialPort) portId.open("SimpleReadApp", 2000);
    }catch (PortInUseException e) {}
    try {
    inputStream = serialPort.getInputStream();
    outputStream = serialPort.getOutputStream();
    }catch (IOException e) {}
    EscuchaSocket es = new EscuchaSocket(outputStream);
    sendThread = new Thread(es);
    sendThread.start();
    try{
    Thread.sleep(5000);
    }catch(InterruptedException e){}
    try {
    serialPort.addEventListener(this);
         }catch (TooManyListenersException e) {}
    serialPort.notifyOnDataAvailable(true);
    try {
    serialPort.setSerialPortParams(9600,SerialPort.DATABITS_8,SerialPort.STOPBITS_1,SerialPort.PARITY_NONE);
    }catch (UnsupportedCommOperationException e) {}
    readThread = new Thread(this);
    readThread.setPriority(Thread.MIN_PRIORITY);
    readThread.start();
    }//fin SimpleRead
    public void run() {
    try {
    while(true){}
    } catch (Exception e) {}
    public void serialEvent(SerialPortEvent event) {
    switch(event.getEventType()) {
    case SerialPortEvent.BI:
    case SerialPortEvent.OE:
    case SerialPortEvent.FE:
    case SerialPortEvent.PE:
    case SerialPortEvent.CD:
    case SerialPortEvent.CTS:
    case SerialPortEvent.DSR:
    case SerialPortEvent.RI:
    case SerialPortEvent.OUTPUT_BUFFER_EMPTY:
    break;
    case SerialPortEvent.DATA_AVAILABLE:
    byte[] readBuffer = new byte[20];
    try {
    while (inputStream.available() > 0) {
    int numBytes = inputStream.read(readBuffer);
    System.out.print(new String(readBuffer));
    }catch (IOException e) {}
    break;
    }//fin switch
    }//fin m�todo serialEvent
    }//fin clase
    class EscuchaSocket implements Runnable{
    ServerSocket sv = null;
    OutputStream outputStream;
    Send send;
    int puerto = 7117;
    public EscuchaSocket(OutputStream out){
    outputStream = out;
    send = new Send (outputStream);
    try {
    sv = new ServerSocket(puerto);
    }//fin try
    catch (IOException ie) {
    System.out.println("Error en run de EscuchaSocket:"+ie.toString());
    }//fin catch
    public void run(){
    while(true){
    try {
    Socket sc = sv.accept();
    BufferedReader inSocket = new BufferedReader(new InputStreamReader(sc.getInputStream()));
    String leida = "";
    int c = 0;
    while((c = inSocket.read()) != -1)
    leida = leida + (char)c;
    if(!leida.equals(""))
    send.sendString(leida);
         inSocket.close();
    }catch (IOException ies) {
    System.out.println("Error al leer del socket:"+ies.toString());
    }//fin catch
    }//fin while
    }//fin run
    }//fin clase
    class Send{
    OutputStream outputStream;
    public Send(OutputStream out){
    outputStream = out;
    public void sendString(String s) {
    try{
    System.out.println("s:"+s);
    outputStream.write(s.getBytes());
    outputStream.flush();
    }catch(IOException ioe){
    System.out.println("Error en sendString:" + ioe.toString());
    }//fin m�todo sendStirng
    }//fin clase

    To send and recv on the same pipe, I suggest a thread to handle the socket... as you are doing in your code, then create a thread reader and writer for the I/O ( one for input, one for output ). Run your thread and buffer commands/messages/whatever to a byteoutput stream, then when the thread wakes up, it reads the buffer and writes the bytes to a dataoutput stream. The reader will work the same way but you only need to buffer for each command. Of course there are little gotchas along the way, but it's fun programming....
    zorkle.

  • Problem with Send and Receive Emal In SAP System

    Hi gurus!
    I have a following quote:
    Dear !
    I have a problem with send and receive email in SAP system following :
    I want to test send and receive email in local network at my company. I
    had two server
    Server 1 : I setup Exchange Mail Server 2007 with domain controller is
    fes.com
    Server 2 : I setup SAP ERP ECC 6.0
    On Server 1 : I created 2 account ( u1Afes.com and u2Afes.com ) and then I tested send and receive email between u1 and u2 in local network through Microsoft Outlook 2007 -> OK
    and then
    On Server 2: I had configured send and receive email on SAP system
    through tcode SBWP, SCOT and SOST as Note 455140 - "Configuration of
    e-mail, fax, paging or SMS using SMTP"
    for example :
    I logged in SAP system with user Basis01 (with email u1Afes.com ) -> then,using tcode SBWP -> new message -> send to u2Afes.com with Internet Mail type and then status message with green light -> sending ok
    and then I have used Microsoft Outlook 2007, I logged with account u2 ->check email -> Ok. I saw message which send from u1
    Finally, My problem is how can receive mail in SAP system without using Microsoft Outlook
    For example:
    Login system SAP with Basis01 account (with  u1Afes.com ) -> tcode SBWP ->New Message -> send to u2Afes.com
    and then
    Login system SAP with Basis02 account (with u2Afes.com ) -> tcode ??? ->
    To receive email from Basis01 (with u1Afes.com )
    Please help me now
    Thanks
    I replace "@" with "A" because of banning email of this forum.
    This quote is about sending email in local network. And we can't receive any email from the outside email address. Addition if I wanna send email to internal email in Internet (we've just tried with email address in local network) What should I config in SAP and Exchange ?
    By the way, Is SAP Server IP added to Relay Agent for sending or receiving mail ?
    Regards
    An NLP
    Edited by: An NLP on Apr 6, 2010 7:03 PM

    Hi,
    This problem is a classic problem of mail routing via Exchange. Exchange like most mail servers use the domain part of the email address as a means to route mails. So I will make an assumption that your main company mail addrss is "User @ fes.com".
    So when you send a mail to the "User @ fes.com mail" address the mail is delivered to your Outlook mail address as this is the default route for company.
    (Q) So how do you get your Exchange server to relay the mail into the sending SAP system?
    (A) The easiest way would be to setup and unique mail domain for your SAP system. I always recommend "user @ client.sid.company.com" which in your case would be "u1 @ 100.PRD.fes.com". You can then instruct Exchange to send any emails addressed to 100.PRD.fes.com domain to your SAP system. Also using this format of address you can configure multiple mail connections into multiple SAP systems.
    (A) Another answer would be to enter the "Full" email address (LOcal and Domain part of address) into the routing rule for Exchange e.g. "U1 @ fes.com" so that all emails addressed to this user will be delivered into SAP. However this method requires a lot of Admin as you will have to update Exchange with ALL email address that need to receive emails. Also if your corporate mail address is "U1 @ fes.com" then all mails will be forwarded to SAP.
    I would definitely NOT recommend this method but the decision is up to you.
    P.S. The IP address of the SAP system is entered into the mail header of the email. This is standard practice in SMTP relay. You can suppress this header in Exchange
    Hope this helps
    Michael

  • Problem with sending and receiving e-mail through exchange [GMail]

    Hello I have problem with sending and receiving e-mail.
    all is well set, username and password are correct, the server set m.google.com. verification of data is about like stepping into a post and want to check the post office gives me an error message: Can not Get Mail. The connection to the server has failed
    I have this problem on my two iPhone

    http://www.zdnet.com/google-drops-exchange-activesync-support-for-free-email-acc ounts-7000008836/

  • HT4628 I am able to download updates and send and receive email so I know I have connection to my wireless router. However, when I click on Safari, I get the message "Safari quit unexpectedly." What is my problem and how do I solve?

    When I click on Safari, I get the message "Safari quit unexpectedly." I know I have access to my wireless net work because I just found and downloaded updates and can send and receive mail. What is my problem and hoe is it solved?

    As Outlook is not an Apple product, you will find more helpers familiar with Outlook here:
    Office for Mac forums

  • I have a new iPhone 6 plus and all is OK. But the mail shows more than 400 'unread' messages whereas there are none in the mailbox or trash or anywhere else I have looked. I can send and receive with no problem. I'm sure I have no unread messages.

    I have a new iPhone 6 plus and all is OK. But the mail shows more than 400 'unread' messages whereas there are none in the mailbox or trash or anywhere else I have looked. I can send and receive with no problem. I'm sure I have no unread messages.

        jsavage9621,
    It pains me to hear about your experience with the Home Phone Connect.  This device usually works seamlessly and is a great alternative to a landline phone.  It sounds like we've done our fair share of work on your account here.  I'm going to go ahead and send you a Private Message so that we can access your account and review any open tickets for you.  I look forward to speaking with you.
    TrevorC_VZW
    Follow us on Twitter @VZWSupport

Maybe you are looking for

  • My Mac Pro and Snow Leopard

    A list of things that happen since installing Snow L on Mac Pro -Stuttering boot up sound It is not always the same, sometimes stutters a lot sometimes it stutters two or three times. I never hear a normal boot up sound. -Random Lock ups/failing apps

  • Slow BB connection, any chance of a change in prof...

    Like the title says, my internet is so slow that i cannot even stream a youtube video, is there any chance this can be rectified somewhat? My latency type is currently set to 'fast', would interleaved be a better option? I don't play games or anythin

  • Laptop to desktop connection

    I installed a linksys USB adapter on my desktop, and dowloaded the software. It seems to be working, since I can connect  to a neighbor's network. I can also connect to her network with my laptop. The problem is, I can't connect to my deasktop with m

  • Media Query not working...

    My media query for screen size of a minimum of 480 px is not working.  The Global CSS takes over.  I can't find the reason why. It seems the brackets are in place correctly.  Can anyone see where the problem might be?  All the other queries work. tha

  • InDesign (and other aps) won't allow PS to save file linked image

    I frequently get the message "can't save the  file because the file was left open/or it is in use" in Photoshop CS4. I originally posted this in the PS forum, but a moderator told me it should be posted here, because, as he says, "the OTHER applicati