question: private int readServerResponse ( ) throws IOException { StringBuffer replyBuf = new StringBuffer ( 32 ) ; int c ; int continuingCode = - 1 ; int code ; String response ; serverResponse . setSize ( 0 ) ; while ( true ) { while ( ( c = in . read ( ) ) != - 1 ) { if ( c == '\r' ) { if ( ( c = in . read ( ) ) != '\n' ) { replyBuf . append ( '\r' ) ; } } replyBuf . append ( ( char ) c ) ; if ( c == '\n' ) { break ; } } response = replyBuf . toString ( ) ; replyBuf . setLength ( 0 ) ; if ( logger . isLoggable ( PlatformLogger . Level . FINEST ) ) { logger . finest ( "Server [" + serverAddr + "] --> " + response ) ; } if ( response . length ( ) == 0 ) { code = - 1 ; } else { try { code = Integer . parseInt ( response . substring ( 0 , 3 ) ) ; } catch ( NumberFormatException e ) { code = - 1 ; } catch ( StringIndexOutOfBoundsException e ) { continue ; } } serverResponse . addElement ( response ) ; if ( continuingCode != - 1 ) { if ( code != continuingCode || ( response . length ( ) >= 4 && response . charAt ( 3 ) == '-' ) ) { continue ; } else { continuingCode = - 1 ; break ; } } else if ( response . length ( ) >= 4 && response . charAt ( 3 ) == '-' ) { continuingCode = code ; continue ; } else { break ; } } return code ; }
target:  Pulls the response from the server and returns the code as a number. Returns -1 on failure.