sockets - Issue in executing SSL TLS client server Java programs -


i have started studying ssl tls in java , written simple client , server programs. run server program first, followed client program. on execution, client program gives following exception stack trace :-

exception in thread "main" javax.net.ssl.sslhandshakeexception: no cipher suites in common @ sun.security.ssl.alerts.getsslexception(unknown source) @ sun.security.ssl.sslsocketimpl.fatal(unknown source) @ sun.security.ssl.handshaker.fatalse(unknown source) @ sun.security.ssl.handshaker.fatalse(unknown source) @ sun.security.ssl.serverhandshaker.chooseciphersuite(unknown source) @ sun.security.ssl.serverhandshaker.clienthello(unknown source) @ sun.security.ssl.serverhandshaker.processmessage(unknown source) @ sun.security.ssl.handshaker.processloop(unknown source) @ sun.security.ssl.handshaker.process_record(unknown source) @ sun.security.ssl.sslsocketimpl.readrecord(unknown source) @ sun.security.ssl.sslsocketimpl.performinitialhandshake(unknown source) @ sun.security.ssl.sslsocketimpl.readdatarecord(unknown source) @ sun.security.ssl.appinputstream.read(unknown source) @ sun.nio.cs.streamdecoder.readbytes(unknown source) @ sun.nio.cs.streamdecoder.implread(unknown source) @ sun.nio.cs.streamdecoder.read(unknown source) @ java.io.inputstreamreader.read(unknown source) @ java.io.bufferedreader.fill(unknown source) @ java.io.bufferedreader.readline(unknown source) @ java.io.bufferedreader.readline(unknown source) @ sslserver.main(sslserver.java:19)

please let me know solution problem. server , client programs follows :-

import java.io.bufferedreader; import java.io.inputstreamreader;  import javax.net.ssl.sslserversocket; import javax.net.ssl.sslserversocketfactory; import javax.net.ssl.sslsocket;  public class sslserver {    private static final int port = 8080;    public static void main(string[] args) throws exception {      sslserversocketfactory ssf = (sslserversocketfactory) sslserversocketfactory.getdefault();     sslserversocket ss = (sslserversocket)ssf.createserversocket(port);     sslsocket s = (sslsocket)ss.accept();     bufferedreader in = new bufferedreader(new inputstreamreader(s.getinputstream()));     string line = null;     while (((line = in.readline()) != null)) {       system.out.println(line);     }     in.close();     s.close();   } }    import java.io.outputstream;  import javax.net.ssl.sslsocket; import javax.net.ssl.sslsocketfactory;  public class sslclient {    private static final string host = "localhost";    private static final int port = 8080;    public static void main(string[] args) throws exception {     sslsocketfactory sf = (sslsocketfactory) sslsocketfactory.getdefault();     sslsocket s = (sslsocket)sf.createsocket(host, port);     outputstream out = s.getoutputstream();     out.write("\nconnection established.\n\n".getbytes());     out.flush();     int thecharacter = 0;     thecharacter = 5;     while (thecharacter != '~') // '~' escape character exit     {       out.write(thecharacter);       out.flush();       thecharacter = '~';     }      out.close();     s.close();   } }

let client , server agree on common cipher. add below code both server , client.

string[] enableciphersuite = {"ssl_dh_anon_with_rc4_128_md5"}; s.setenabledciphersuites(enableciphersuite);


Comments

Post a Comment

Popular posts from this blog

commonjs - How to write a typescript definition file for a node module that exports a function? -

consider, toml node module can use: // toml.d.ts declare module toml { export function parse(value:string):any; } declare module "toml" { export = toml; } then: /// <reference path="../../../../../defs/toml/toml.d.ts"/> import toml = require('toml'); toml.parse(...); however, node module export single function, such 'glob' ( https://github.com/isaacs/node-glob ). the node usage of module be: var glob = require("glob") glob("*.js", {}, callback(err, files) { ... }); you'd naively expect this: // glob.d.ts declare function globs(paths:string, options:any, callback:{(err:any, files:string[]):void; ...but because typescripts 'import' semantics bit strange, seems can use 'import .. = require()' statement alias modules . trying call: /// <reference path="../../../../../defs/glob/glob.d.ts"/> import blog = require('glob'); results in: error ts2072: mod
Read more

openid - Okta: Failed to get authorization code through API call -

i'm integrating okta own idp server using okta's api. i'm implementing authorization code flow following steps below: in own server, use /api/v1/authn endpoint sessiontoken. use sessiontoken obtain authorization calling endpoint: /oauth2/v1/authorize?client_id=" + clientid + "&sessiontoken=" + sessiontoken + "&response_type=code&response_mode=query&scope=openid&redirect_uri=" + redirecturl + "&state=evanyang&nonce=" it's supposed return response status code 302 , location header containing redirect url code value. however, keep getting response status code 200 , without location header, html body saying "you using unsupported browser." , "javascript disabled on browser." according api documentation: http://developer.okta.com/docs/api/resources/oidc.html#authentication-request , sessiontoken parameter sufficient this: an okta one-time sessiontoken. allows api-based
Read more

thorough guide for profiling racket code -

did googling ("racket profiling", "racket measure performance"), didn't find , there no examples in docs. did google "profile" search on htdp - no luck. (profile (f ...)) output isn't obvious other small snippets. ideally want python's python -m cprofile usage examples. when search "python profiling", both duckduckgo , google give top result: 26.4. python profilers . (although scanned quickly, seems more of reference "thorough usage guide" examples. if had else in mind, perhaps please link that?) the equivalent racket documentation be: profile: statistical profiler . a usage example: #lang racket (require profile) (profile-thunk (thunk (function-to-profile arg0 arg1) )) here (thunk e) convenience (lambda () e) . bigger example: #lang racket (module mod racket (provide f) (define (f) (for/list ([i 10000]) i))) (require (prefix-in mod: 'mod)) (define (f) (for ([i 10000
Read more