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package net.sourceforge.jsocks;
/**
Exception thrown by various socks classes to indicate errors
with protocol or unsuccessful server responses.
*/
public class SocksException extends java.io.IOException{
private static final long serialVersionUID = 6141184566248512277L;
/**
Construct a SocksException with given error code.
<p>
Tries to look up message which corresponds to this error code.
@param errCode Error code for this exception.
*/
public SocksException(int errCode){
this.errCode = errCode;
if((errCode >> 16) == 0){
//Server reply error message
errString = errCode <= serverReplyMessage.length ?
serverReplyMessage[errCode] :
UNASSIGNED_ERROR_MESSAGE;
}else{
//Local error
errCode = (errCode >> 16) -1;
errString = errCode <= localErrorMessage.length ?
localErrorMessage[errCode] :
UNASSIGNED_ERROR_MESSAGE;
}
}
/**
Constructs a SocksException with given error code and message.
@param errCode Error code.
@param errString Error Message.
*/
public SocksException(int errCode,String errString){
this.errCode = errCode;
this.errString = errString;
}
/**
Get the error code associated with this exception.
@return Error code associated with this exception.
*/
public int getErrorCode(){
return errCode;
}
/**
Get human readable representation of this exception.
@return String represntation of this exception.
*/
public String toString(){
return errString;
}
static final String UNASSIGNED_ERROR_MESSAGE =
"Unknown error message";
static final String serverReplyMessage[] = {
"Succeeded",
"General SOCKS server failure",
"Connection not allowed by ruleset",
"Network unreachable",
"Host unreachable",
"Connection refused",
"TTL expired",
"Command not supported",
"Address type not supported" };
static final String localErrorMessage[] ={
"SOCKS server not specified",
"Unable to contact SOCKS server",
"IO error",
"None of Authentication methods are supported",
"Authentication failed",
"General SOCKS fault" };
String errString;
int errCode;
}//End of SocksException class
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