124 The server refused to perform the specified operation.
125 The server does not support the request type of query.
126 The name referred to in the query does not exist.
127 The was a failure on the server.
128 The server was unable to interpret the query.
512 A method is currently blocking the thread. Some PowerTcp methods are not reentrant. For example, if you set a timer and enter the Receive method with a Timeout, and attempt to enter the Receive method again, then this error is generated.
513 Connect, Listen or Open method failed. Only one usage of each socket address (protocol/IP address/port) is normally permitted. This error occurs if an application attempts to bind() a socket to an IP address/port that has already been used for an existing socket, or a socket that wasn't closed properly, or one that is still in the process of closing. For server applications that need to bind() multiple sockets to the same port number, consider using setsockopt(SO_REUSEADDR).
514 The requested address is not valid in its context. Normally results from an attempt to bind() to an address that is not valid for the local machine. This may also result from connect(), sendto(), WSAConnect(), WSAJoinLeaf(), or WSASendTo() when the remote address or port is not valid for a remote machine (e.g. address or port 0).
515 A socket operation encountered a dead network. This could indicate a serious failure of the network system (i.e. the protocol stack that the WinSock DLL runs over), the network interface, or the local network itself.
516 A socket operation was attempted to an unreachable network. This usually means the local software knows no route to reach the remote host.
517 The connection has been broken due to "keep-alive" activity detecting a failure while the operation was in progress. May also be returned by setsockopt() if an attempt is made to set SO_KEEPALIVE on a connection that has already failed.
518 An established connection was aborted by the software in your host machine, possibly due to a data transmission timeout or protocol error. PowerTcp will close the connection when this error is encountered.
519 The virtual circuit was reset by the remote side executing a "hard" or "abortive" close. This normally results if the peer application on the remote host is suddenly stopped, the host is rebooted, or the remote host used a "hard close". This error may also result if a connection was broken due to "keep-alive" activity detecting a failure. PowerTcp closes the connection when this error is encountered.
520 Connect method failed. An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full. The socket cannot be connected.
521 Receive or Send method failed. The socket is not connected.
522 The connection has been dropped because of a network failure or because the peer system failed to respond. Also caused when Connect, Send, Receive, Fill or Close methods are used with a Timeout parameter and the operation fails to complete within the specified number of milliseconds.
523 Connect method failed. No connection could be made because the target machine actively refused it. This usually results from trying to connect to a service that is inactive on the foreign host - i.e. one with no server application running.
524 Connect method failed. A successful WSAStartup() call could not be made. This is the most serious failure of the network subsystem.
525 Connect method failed. No such host is known. The name is not an official hostname or alias, or it cannot be found in the database(s) being queried. This error may also be returned for protocol and service queries, and means the specified name could not be found in the relevant database.
526 Connect method failed. This is usually a temporary error during hostname resolution and means that the local server did not receive a response from an authoritative server. A retry at some time later may be successful.
527 Connect method failed. The requested name is valid and was found in the database, but it does not have the correct associated data being resolved for. The usual example for this is a hostname -> address translation attempt (using gethostbyname() or WSAAsyncGetHostByName()) which uses the DNS (Domain Name Server), and an MX record is returned but no A record - indicating the host itself exists, but is not directly reachable.
528 Miscellaneous error.
529 Parameter 1 of the method used is invalid or not appropriate.
530 Parameter 2 of the method used is invalid or not appropriate.
531 Parameter 3 of the method used is invalid or not appropriate.
532 Connect method failed. Some sort of non-recoverable error occurred during a database lookup. This may be because the database files (e.g. BSD-compatible HOSTS, SERVICES or PROTOCOLS files) could not be found, or a DNS request was returned by the server with a severe error.
533 Session aborted by user.
534 A error occured in the protocol.
535 An error occured while performing a File I/O operation.
536 An unknown, invalid or unsupported option or level was specified.
537 An invalid UserName or Password was specified
538 An error occured while compiling a file.
539 DartLicense.exe is not registered on this system. Please check with your vendor.
