SocksException


1   package socks;
2   
3   /**
4    Exception thrown by various socks classes to indicate errors
5    with protocol or unsuccessfull server responses.
6   */
7   public class SocksException extends java.io.IOException  {
8      /**
9       Construct a SocksException with given errorcode.
10      <p>
11      Tries to look up message which corresponds to this error code.
12      @param errCode Error code for this exception.
13     */
14     public SocksException(int errCode){
15         this.errCode = errCode;
16         if((errCode >> 16) == 0){
17            //Server reply error message
18            errString = errCode <= serverReplyMessage.length ?
19                        serverReplyMessage[errCode] :
20                        UNASSIGNED_ERROR_MESSAGE;
21         }else{
22            //Local error
23            errCode = (errCode >> 16) -1;
24            errString = errCode <= localErrorMessage.length ?
25                        localErrorMessage[errCode] :
26                        UNASSIGNED_ERROR_MESSAGE;
27         }
28     }
29     /**
30      Constructs a SocksException with given error code and message.
31      @param errCode  Error code.
32      @param errString Error Message.
33     */
34     public SocksException(int errCode,String   errString){
35         this.errCode = errCode;
36         this.errString = errString;
37     }
38     /**
39      Get the error code associated with this exception.
40      @return Error code associated with this exception.
41     */
42     public int getErrorCode(){
43        return errCode;
44     }
45     /**
46      Get human readable representation of this exception.
47      @return String represntation of this exception.
48     */
49     public String   toString(){
50        return errString;
51     }
52  
53     static final String   UNASSIGNED_ERROR_MESSAGE =
54                    "Unknown error message";
55     static final String   serverReplyMessage[] = { 
56                    "Succeeded", 
57                    "General SOCKS server failure",
58                    "Connection not allowed by ruleset",
59                    "Network unreachable",
60                    "Host unreachable",
61                    "Connection refused",
62                    "TTL expired",
63                    "Command not supported",
64                    "Address type not supported" };
65  
66     static final String   localErrorMessage[] ={
67                    "SOCKS server not specified",
68                    "Unable to contact SOCKS server",
69                    "IO error",
70                    "None of Authentication methods are supported",
71                    "Authentication failed",
72                    "General SOCKS fault" };
73  
74     String   errString;
75     int errCode;
76  
77  }//End of SocksException class
78  
79
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