php man page for mongoconnectionexception

MONGOCONNECTIONEXCEPTION(3)						 1					       MONGOCONNECTIONEXCEPTION(3)

The MongoConnectionException class

INTRODUCTION
	Thrown when the driver fails to connect to the database.

	There are a number of possible error messages to help you diagnose the connection problem. These are:

	      o No  candidate  servers	found  Thrown when the driver cannot establish a connection to MongoDB (fulfilling the ReadPreferences, if
		specified).

	      o No server name given. This error occurs if you pass in "" as the server name, probably because of an typo with	string	interpola-
		tion, e.g., "$servr" instead of "$server".

	      o
		 failed to get host [hostname] or port [portnum] from [server].  This indicated that the server string was malformed. "[hostname]"
		and "[portnum]" will be as much as the driver could dicipher of it.

	      o Operation in progress Connecting to the database timed out.

	      o Transport endpoint is not connected Generally means that the connection string isn't correct, the driver couldn't  even  find  the
		database server.

	      o couldn't determine master No server in a replica set connection was identified as the primary.

	      o couldn't  get  host  info for [server] This indicated that DNS could not resolve the server address you gave. This could easily be
		caused by a typo, for example, "server" instead of "$server".

	      o Invalid Argument This can be caused by attempting to connect to a machine that is up but that the database isn't actually  running
		on. Make sure that you've started the database server before connecting.

	      o Permission  denied  This  means  that  the  socket could not be opened due to permissions issues. On Red Hat variants, this can be
		caused by a default setting that does not allow Apache to create network connections. You can override this setting by running:

	      $ /usr/sbin/setsebool -P httpd_can_network_connect 1

	If the error message is not listed above, it is probably an error from the C socket, and you can search the web for its usual cause.

CLASS SYNOPSIS
       MongoConnectionException

       MongoConnectionExceptionextends
       MongoException

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