MacOS client  -  console orientdb 2.2. 
my db have 777 rights and listens 0.0.0.0:2424 address

First test :

telnet from command line success connecting  to orientdb, when I input text 
it call exception :

com.orientechnologies.common.io.OIOException?Impossible to read a chunk of 
length:2003134055 max allowed chunk length:16777216 see 
NETWORK_BINARY_MAX_CONTENT_LENGTH settings 
q??sr,com.orientechnologies.common.io.OIOException?O????"Hxr7com.orientechnologies.common.exception.OSystemException??_Eh<??xr1com.orientechnologies.common.exception.OException5?9?v?O0xrjava.lang.RuntimeException?_G

4??xrjava.lang.Exception??>;?xrjava.lang.Throwable??5'9w??LcausetLjava/lang/ThrodetailMessagetLjava/lang/String;[

stackTracet[Ljava/lang/StackTraceElement;LsuppressedExceptionstLjava/util/List;xppt?Impossible
 
to read a chunk of length:2003134055 max allowed chunk length:16777216 see 
NETWORK_BINARY_MAX_CONTENT_LENGTH settings 
ur[Ljava.lang.StackTraceElement;F*<<?"9xpsrava.lang.StackTraceElementa Ś&6݅I

lineNumberLdeclaringClassq~fileNameq~L

methodNameq~xp?tEcom.orientechnologies.orient.enterprise.channel.binary.OChannelBinarytOChannelBinary.javat
 
readBytessq~?tRcom.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinarytNetworkProtocolBinary.javatonBeforeOperationalRequestsq~bq~q~tsessionRequestsq~?q~q~texecutesq~Mt/com.orientechnologies.common.thread.OSoftThreadtOSoftThread.javatrunsr&java.util.Collections$UnmodifiableList?%1??Llistq~
 
xr,java.util.Collections$UnmodifiableCollectionB??^?LctLjava/util/Collection;xpsrjava.util.ArrayListx????a?Isizexpwxq~$xConnection
 
closed by foreign host.

but it confirms that packet reach orientdb host successfully.

Second test:
Iptables registred incoming packets too. Connection from client to server 
established successfully on port 2424


Oct  6 13:48:18 kernel: [79208.138517] Detecting incoming packets: 
IN=ens160 OUT= MAC=* SRC=* DST=LEN=64 TOS=0x00 PREC=0x00 TTL=54 ID=25429 
PROTO=TCP SPT=5432 DPT=2424 WINDOW=65535 RES=0x00 SYN URGP=0
Oct  6 13:48:18 kernel: [79208.142288] Detecting incoming packets: 
IN=ens160 OUT= MAC= SRC= DST= LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=18031 
PROTO=TCP SPT=5432 DPT=2424 WINDOW=4104 RES=0x00 ACK URGP=0
Oct  6 13:48:18 kernel: [79208.146636] Detecting incoming packets: 
IN=ens160 OUT= MAC= SRC= DST= LEN=52 TOS=0x00 PREC=0x00 TTL=54 ID=3105 
PROTO=TCP SPT=5432 DPT=2424 WINDOW=4103 RES=0x00 ACK URGP=0
Oct  6 13:48:18 kernel: [79208.147123] Detecting incoming packets: 
IN=ens160 OUT= MAC= SRC= DST= LEN=153 TOS=0x00 PREC=0x00 TTL=54 ID=10286 
PROTO=TCP SPT=5432 DPT=2424 WINDOW=4103 RES=0x00 ACK PSH URGP=0
Iptables register packets from my client. But orientdb not response to 
client. 

OrientDB have event in log :

OrientDB Server is active v2.2.24 (build 
d3309b6660d38e14390344a1fa98a43ade2e2073). [OServer]Error executing 
requestcom.orientechnologies.common.io.OIOException: Impossible to read a 
chunk of length:175181066 max allowed chunk length:16777216 see 
NETWORK_BINARY_MAX_CONTENT_LENGTH settings at 
com.orientechnologies.orient.enterprise.channel.binary.OChannelBinary.readBytes(OChannelBinary.java:160)
 
at 
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.onBeforeOperationalRequest(ONetworkProtocolBinary.java:473)
 
at 
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.sessionRequest(ONetworkProtocolBinary.java:354)
 
at 
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.execute(ONetworkProtocolBinary.java:207)
 
at 
com.orientechnologies.common.thread.OSoftThread.run(OSoftThread.java:77)Error 
executing requestcom.orientechnologies.common.io.OIOException: Impossible 
to read a chunk of length:175181066 max allowed chunk length:16777216 see 
NETWORK_BINARY_MAX_CONTENT_LENGTH settings at 
com.orientechnologies.orient.enterprise.channel.binary.OChannelBinary.readBytes(OChannelBinary.java:160)
 
at 
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.onBeforeOperationalRequest(ONetworkProtocolBinary.java:473)
 
at 
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.sessionRequest(ONetworkProtocolBinary.java:354)
 
at 
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.execute(ONetworkProtocolBinary.java:207)
 
at 
com.orientechnologies.common.thread.OSoftThread.run(OSoftThread.java:77)Error 
executing requestcom.orientechnologies.common.io.OIOException: Impossible 
to read a chunk of length:22085969 max allowed chunk length:16777216 see 
NETWORK_BINARY_MAX_CONTENT_LENGTH settings at 
com.orientechnologies.orient.enterprise.channel.binary.OChannelBinary.readBytes(OChannelBinary.java:160)
 
at 
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.onBeforeOperationalRequest(ONetworkProtocolBinary.java:473)
 
at 
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.sessionRequest(ONetworkProtocolBinary.java:354)
 
at 
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.execute(ONetworkProtocolBinary.java:207)
 
at 
com.orientechnologies.common.thread.OSoftThread.run(OSoftThread.java:77)Error 
executing requestcom.orientechnologies.common.io.OIOException: Impossible 
to read a chunk of length:218784115 max allowed chunk length:16777216 see 
NETWORK_BINARY_MAX_CONTENT_LENGTH settings at 
com.orientechnologies.orient.enterprise.channel.binary.OChannelBinary.readBytes(OChannelBinary.java:160)
 
at 
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.onBeforeOperationalRequest(ONetworkProtocolBinary.java:473)
 
at 
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.sessionRequest(ONetworkProtocolBinary.java:354)
 
at 
com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.execute(ONetworkProtocolBinary.java:207)
 
at com.orientechnologies.common.thread.OSoftThread.run(OSoftThread.java:77)


Yesterday I connected through console on Ubuntu (not MacOS) netbook .Connection 
was established successfully.

May be problem in Java networking (version sockets protocols) ? Or in 
Security orientdb or filesystem ? 


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