[cf-dev] DTLS connection - Client can not receive response from CoAP ser

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[cf-dev] DTLS connection - Client can not receive response from CoAP server

From: Karlson Lee <karlson@xxxxxxxxxxxx>
Date: Tue, 7 Mar 2017 15:31:25 +0000
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Dear Californium developer,

I currently have a CoAP backend that works perfectly in our local computer and now installing them into the devices itself for testing, basically the set-up involves a CoAP client sending a empty PUT request to a CoAP server with a DTLS connector.

Unfortunately, it seems like most of the packets are lost and the client are retransmitting the packets a lot. The server has no problem receiving the message from the client after the several transmission, however the client was never able to receive a response from the server thus not knowing whether the PUT request was successful.

Thanks, Karlson

log:

INFO: coaps://bubblegum.home/alert

8 FINE [Connection]: Handshake with [bubblegum.home/10.235.68.101:5684] has been started - (org.eclipse.californium.scandium.dtls.Connection.java:831) handshakeStarted() in thread DTLS-Sender-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:30)

8 FINE [ECDHECryptography$SupportedGroup]: Group [brainpoolP256r1] is not supported by JRE - (org.eclipse.californium.scandium.dtls.cipher.ECDHECryptography$SupportedGroup.java:373) <init>() in thread DTLS-Sender-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:31)

8 FINE [ECDHECryptography$SupportedGroup]: Group [brainpoolP384r1] is not supported by JRE - (org.eclipse.californium.scandium.dtls.cipher.ECDHECryptography$SupportedGroup.java:381) <init>() in thread DTLS-Sender-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:31)

8 FINE [ECDHECryptography$SupportedGroup]: Group [brainpoolP512r1] is not supported by JRE - (org.eclipse.californium.scandium.dtls.cipher.ECDHECryptography$SupportedGroup.java:389) <init>() in thread DTLS-Sender-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:31)

Feb 28, 2017 4:37:31 PM detector.AlertService run

INFO: Eventcode: 2

Feb 28, 2017 4:37:31 PM detector.AlertService run

SEVERE: No response

9 FINE [DTLSConnector]: Received Handshake (22) record from peer [/10.235.68.101:5684] - (org.eclipse.californium.scandium.DTLSConnector.java:455) processHandshakeRecord() in thread DTLS-Receiver-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:31)

9 FINE [ClientHandshaker]: Processing Handshake (22) message from peer [bubblegum.home/10.235.68.101:5684] - (org.eclipse.californium.scandium.dtls.ClientHandshaker.java:179) doProcessMessage() in thread DTLS-Receiver-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:31)

9 FINE [ClientHandshaker]: Processed HELLO_VERIFY_REQUEST (3) message with sequence no [0] from peer [bubblegum.home/10.235.68.101:5684] - (org.eclipse.californium.scandium.dtls.ClientHandshaker.java:372) doProcessMessage() in thread DTLS-Receiver-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:31)

12 FINE [DTLSConnector]: Re-transmitting flight for [bubblegum.home/10.235.68.101:5684], [3] retransmissions left - (org.eclipse.californium.scandium.DTLSConnector.java:112) handleTimeout() in thread DTLS RetransmitTask 1 at (2017-02-28 16:37:32)

9 FINE [ClientHandshaker]: Processed SERVER_HELLO (2) message with sequence no [1] from peer [bubblegum.home/10.235.68.101:5684] - (org.eclipse.californium.scandium.dtls.ClientHandshaker.java:372) doProcessMessage() in thread DTLS-Receiver-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:33)

12 FINE [DTLSConnector]: Re-transmitting flight for [bubblegum.home/10.235.68.101:5684], [2] retransmissions left - (org.eclipse.californium.scandium.DTLSConnector.java:112) handleTimeout() in thread DTLS RetransmitTask 1 at (2017-02-28 16:37:34)

9 FINE [ClientHandshaker]: Processed CERTIFICATE (11) message with sequence no [2] from peer [bubblegum.home/10.235.68.101:5684] - (org.eclipse.californium.scandium.dtls.ClientHandshaker.java:372) doProcessMessage() in thread DTLS-Receiver-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:36)

9 FINE [ClientHandshaker]: Processed SERVER_KEY_EXCHANGE (12) message with sequence no [3] from peer [bubblegum.home/10.235.68.101:5684] - (org.eclipse.californium.scandium.dtls.ClientHandshaker.java:372) doProcessMessage() in thread DTLS-Receiver-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:37)

9 FINE [ClientHandshaker]: Processed CERTIFICATE_REQUEST (13) message with sequence no [4] from peer [bubblegum.home/10.235.68.101:5684] - (org.eclipse.californium.scandium.dtls.ClientHandshaker.java:372) doProcessMessage() in thread DTLS-Receiver-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:37)

12 FINE [DTLSConnector]: Re-transmitting flight for [bubblegum.home/10.235.68.101:5684], [1] retransmissions left - (org.eclipse.californium.scandium.DTLSConnector.java:112) handleTimeout() in thread DTLS RetransmitTask 1 at (2017-02-28 16:37:39)

9 FINE [ClientHandshaker]: Processed SERVER_HELLO_DONE (14) message with sequence no [5] from peer [bubblegum.home/10.235.68.101:5684] - (org.eclipse.californium.scandium.dtls.ClientHandshaker.java:372) doProcessMessage() in thread DTLS-Receiver-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:39)

9 FINE [ClientHandshaker]: Processing Change Cipher Spec (20) message from peer [bubblegum.home/10.235.68.101:5684] - (org.eclipse.californium.scandium.dtls.ClientHandshaker.java:179) doProcessMessage() in thread DTLS-Receiver-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:41)

9 FINE [ClientHandshaker]: Processed Change Cipher Spec (20) message from peer [bubblegum.home/10.235.68.101:5684] - (org.eclipse.californium.scandium.dtls.ClientHandshaker.java:372) doProcessMessage() in thread DTLS-Receiver-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:41)

9 FINE [Connection]: Session with [bubblegum.home/10.235.68.101:5684] has been established - (org.eclipse.californium.scandium.dtls.Connection.java:837) sessionEstablished() in thread DTLS-Receiver-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:41)

9 FINE [DTLSConnector$5]: Session with [bubblegum.home/10.235.68.101:5684] established, now sending deferred message - (org.eclipse.californium.scandium.DTLSConnector$5.java:837) sessionEstablished() in thread DTLS-Receiver-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:41)

9 FINE [Connection]: Handshake with [bubblegum.home/10.235.68.101:5684] has been completed - (org.eclipse.californium.scandium.dtls.Connection.java:843) handshakeCompleted() in thread DTLS-Receiver-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:41)

9 FINE [ClientHandshaker]: Processed FINISHED (20) message with sequence no [6] from peer [bubblegum.home/10.235.68.101:5684] - (org.eclipse.californium.scandium.dtls.ClientHandshaker.java:372) doProcessMessage() in thread DTLS-Receiver-0.0.0.0/0.0.0.0:49964 at (2017-02-28 16:37:41)

Attachment: gateway print screen.png
Description: PNG image

Attachment: client wireshack printscreen.png
Description: PNG image

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