I Am Getting Error in UDP Socket Programming For Calculator
How TO solve below mention error i am facing issue in connection
This Is client side code
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This Is server side code
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I Am Receiving This Error Any One Help Me Out
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In our software, we are keep getting this warning/error message intermittently. Not sure how/why this message appears.
HTTP asio handshake failed: error:140000DB:SSL routines:SSL
routines:short read
I searched in the Internet, but the mostly the result pointing me to a VMware problem. Which not the case for me.
Until I found out that actually this error is thrown by OpenSSL that is used by Boost-Asio. I have downloaded the source code of OpenSSL/Asio/Boost but couldn't find this error code in the source. My question, Is there anyone knows what this error means? What could be the trigger of this error message? I just want to understand a bit to find out the reproduction. So we can fix our software if there is any hole in the software.
Many Thanks in advance!
Reference:
http://ib-krajewski.blogspot.my/2016/03/https-support-for-casablanca-client.html
how to clean boost::asio::ssl::stream after closed by server
A commit in OpenSSL removed the error SSL_R_SHORT_READ.
The commit before before OpenSSL removed the error SSL_R_SHORT_READ still has it defined as 219 == 0xDB. This error of 0xDB is what comes out of OpenSSL as 0x140000DB.
In general a short read happens on TCP when the connection ended before the other side could send enough data to decode the current message. This may happen for example because the other side crashed or a network problem.
Found the root cause for my problem. There is mismatch of cipher the host and the client that trying to connect to. Then this error is thrown from the client.
I'm trying to get a Labview VI working. However, I'm getting an error on the KE6485 Multi-read sub-VI with the error "Driver Status: (Hex 0xBFFF004A) Error - A service request has not been received for the session". Does anyone have a suggestion on steps I could take to fix this?
We have seen much more SSL error than before when we move to a new server. The total SSL error rate is not high. Many of them are:
error:140943E8:SSL routines:SSL3_READ_BYTES:reason(1000):s3_pkt.c:1256:SSL alert number 0
We finally found these requests are actually successful requests. Why these error was generated is that openssl found these were fatal error. Add more debug info show that:
ssl_callback_info:SSL_CB_READ_ALERT fatal error close notify
But from rfc2246:
7.2.1. Closure alerts
The client and the server must share knowledge that the connection is
ending in order to avoid a truncation attack. Either party may
initiate the exchange of closing messages.
close_notify
This message notifies the recipient that the sender will not send
any more messages on this connection. The session becomes
unresumable if any connection is terminated without proper
close_notify messages with level equal to warning.
We are wondering if there some special clients send "alert 0" as fatal . Or this related some known issue of openssl. We are using openssl-1.0.1e now. Before migration we used openssl-1.0.0-25.
Any suggestions would be appreciated.
Update:
I investigated the access log and found almost all the "fatal alert 0" was sent by Safari on Apple devices(Mac, iPhone, iPad).
Through the code of libsecurity_ssl which the library of SSL engine. I found that this library would send "fatal alert 0" in sometimes that was totally different with other SSL libraries, for example openssl, NSS.
SSLFatalSessionAlert(SSL_AlertCloseNotify, ctx);
http://www.opensource.apple.com/source/libsecurity_ssl/libsecurity_ssl-32463/lib/sslRecord.c
This mostly occurred when Safari meet unexpected abort of the connection. As my server would not sent a "warning alert 0" to close the connection.
I have written a chat server which writes a message line on the browser of one client to other client. The problem is that if i use request.finish() the output is shown but the connection is closed .if i dont use request.finish () the browser or program buffers the output and displaying output only after 20 or so request have been send.however the connection remains open.
I think best approach is reconnecting client just after receiving a message and closing connection.
I am using XMPPFramework to connect to my xmpp server on local network ,it connects but as soon as it sends the auth packet and recieves challenge it disconnects with error : "internal error" code=1 ErrorDomain=libxmlErrorDomain. Basically it is not able to parse the challenge :
2013-03-08 15:56:41.890 iPhoneXMPP[23710:13703] Data to be parsed <challenge xmlns="urn:ietf:params:xml:ns:xmpp-sasl">cmVhbG09ImluZm9zeXMuY29tIixub25jZT0ib05JYmxSU2hLQXUxWnorRUNGbmRJby83Snljdm5DLzNKQWV2SXB5UCIsY2hhcnNldD11dGYtOCxhbGdvcml0aG09bWQ1LXNlc3M=</challenge>
2013-03-08 15:56:41.891 iPhoneXMPP[23710:13703] Parser failed
How can i solve this issue,is it something related to how i have configured my xcode to work with libxml2 ?
There was a extra charcter at the end of each packet,due to which the SAX parser libxml2 was failing.trimming each packet by one character solved the problem.