I am trying to upload an image captured by camera to FTP server, I am using FTPClient object, and it is working successfully when running the Java code on computer, but it fails when running the code on an android device.
I have checked the INTERNET permission, also internet connection is stable, also the other internet related functions are working correctly, only this ftp client is not working.
Here is the code:
FTPClient ftpClient = new FTPClient();
ftpClient.connect("ftp.mywebsite.com",21);
Please note that mywebsite is just a place holder.
It is throwing the following FTPConnectionClosedException exception
W/System.err: org.apache.commons.net.ftp.FTPConnectionClosedException: Connection closed without indication.
W/System.err: at org.apache.commons.net.ftp.FTP.__getReply(FTP.java:324)
W/System.err: at org.apache.commons.net.ftp.FTP.__getReply(FTP.java:300)
W/System.err: at org.apache.commons.net.ftp.FTP._connectAction_(FTP.java:425)
W/System.err: at org.apache.commons.net.ftp.FTPClient._connectAction_(FTPClient.java:962)
W/System.err: at org.apache.commons.net.ftp.FTPClient._connectAction_(FTPClient.java:950)
W/System.err: at org.apache.commons.net.SocketClient._connect(SocketClient.java:244)
W/System.err: at org.apache.commons.net.SocketClient.connect(SocketClient.java:202)
W/System.err: at com.basma.basma_rider.Helper$3.doInBackground(Helper.java:367)
W/System.err: at com.basma.basma_rider.Helper$3.doInBackground(Helper.java:342)
W/System.err: at android.os.AsyncTask$2.call(AsyncTask.java:288)
W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:237)
W/System.err: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
W/System.err: at java.lang.Thread.run(Thread.java:841)
Related
After getting facebook access token, i use it for login in my own web server. However in the first time, there is warning in the log file, and i can not load data from my server, but when i open app from second times, it load normally.
Below is warning log:
W/System.err: com.google.gson.JsonSyntaxException:
java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING
at line 1 column 1 path $ W/System.err: at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:224)
W/System.err: at
retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:39)
W/System.err: at
retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:27)
W/System.err: at
retrofit2.ServiceMethod.toResponse(ServiceMethod.java:122)
W/System.err: at
retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:217) W/System.err:
at retrofit2.OkHttpCall.execute(OkHttpCall.java:180) W/System.err:
at
retrofit2.adapter.rxjava2.CallExecuteObservable.subscribeActual(CallExecuteObservable.java:42) W/System.err: at
io.reactivex.Observable.subscribe(Observable.java:12084) W/System.err:
at
retrofit2.adapter.rxjava2.BodyObservable.subscribeActual(BodyObservable.java:34)
W/System.err: at
io.reactivex.Observable.subscribe(Observable.java:12084) W/System.err:
at
io.reactivex.internal.operators.observable.ObservableSingleSingle.subscribeActual(ObservableSingleSingle.java:35)
W/System.err: at io.reactivex.Single.subscribe(Single.java:3433)
W/System.err: at
io.reactivex.internal.operators.single.SingleDoOnSuccess.subscribeActual(SingleDoOnSuccess.java:35)
W/System.err: at io.reactivex.Single.subscribe(Single.java:3433)
W/System.err: at
io.reactivex.internal.operators.single.SingleSubscribeOn$SubscribeOnObserver.run(SingleSubscribeOn.java:89)
W/System.err: at
io.reactivex.Scheduler$DisposeTask.run(Scheduler.java:579)
W/System.err: at
io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
W/System.err: at
io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
W/System.err: at
java.util.concurrent.FutureTask.run(FutureTask.java:266) W/System.err:
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
W/System.err: at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
W/System.err: at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
W/System.err: at java.lang.Thread.run(Thread.java:764)
W/System.err: Caused by: java.lang.IllegalStateException: Expected
BEGIN_OBJECT but was STRING at line 1 column 1 path $ W/System.err:
at com.google.gson.stream.JsonReader.beginObject(JsonReader.java:385)
W/System.err: at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:213)
What could be causing this?
That error tells you that there is an error when GSON tries to parse the JSON returned by the web service you're calling. In particular, GSON is expecting a JSON object, but it receives a string (see the first line of the error message).
If the error happens only the first time you call it and not the second it means that the web service returns 2 different answers, and GSON can correctly parse the second one, but not the first one.
In order to find out what's wrong, you should provide more details, like your data model and the 2 responses returned by the web service.
I'm trying to connect to my Openfire 4.1.3 server with Smack 4.2, the current config works ok:
XMPPTCPConnectionConfiguration.Builder config = XMPPTCPConnectionConfiguration.builder();
config.setSecurityMode(ConnectionConfiguration.SecurityMode.disabled);
config.setXmppDomain(serviceName);
config.setHost(context.getString(R.string.server));
config.setHostnameVerifier(verifier);
config.setHostAddress(addr);
config.setResource("Android");
config.setPort(Integer.parseInt(context.getString(R.string.server_port)));
config.setDebuggerEnabled(true);
XMPPTCPConnection.setUseStreamManagementResumptionDefault(true);
XMPPTCPConnection.setUseStreamManagementDefault(true);
connection = new XMPPTCPConnection(config.build());
If I try to connect with SecurityMode.required I can't establish any connection. I read aroud about setting CA on device, but I don't know what to do. Any help?
EDIT:
These are the new lines added for trying to connect with SecurityMode.required
config.setSecurityMode(ConnectionConfiguration.SecurityMode.required);
config.setCompressionEnabled(false);
SSLContext sslContext = null;
try {
sslContext = createSSLContext(context);
} catch (KeyStoreException | NoSuchAlgorithmException
| KeyManagementException | IOException | CertificateException e) {
e.printStackTrace();
}
config.setCustomSSLContext(sslContext);
config.setSocketFactory(sslContext.getSocketFactory());
It generates this error stack:
W/System.err: javax.net.ssl.SSLHandshakeException: Handshake failed
W/System.err: at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:429)
W/System.err: at com.android.org.conscrypt.OpenSSLSocketImpl.waitForHandshake(OpenSSLSocketImpl.java:682)
W/System.err: at com.android.org.conscrypt.OpenSSLSocketImpl.getInputStream(OpenSSLSocketImpl.java:644)
W/System.err: at org.jivesoftware.smack.tcp.XMPPTCPConnection.initReaderAndWriter(XMPPTCPConnection.java:656)
W/System.err: at org.jivesoftware.smack.tcp.XMPPTCPConnection.initConnection(XMPPTCPConnection.java:633)
W/System.err: at org.jivesoftware.smack.tcp.XMPPTCPConnection.connectInternal(XMPPTCPConnection.java:891)
W/System.err: at org.jivesoftware.smack.AbstractXMPPConnection.connect(AbstractXMPPConnection.java:377)
W/System.err: at it.chiaia.portaleragazze.chat.xmpp.XmppServer$2.doInBackground(XmppServer.java:176)
W/System.err: at it.chiaia.portaleragazze.chat.xmpp.XmppServer$2.doInBackground(XmppServer.java:169)
W/System.err: at android.os.AsyncTask$2.call(AsyncTask.java:305)
W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:237)
W/System.err: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:243)
W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
W/System.err: at java.lang.Thread.run(Thread.java:761)
W/System.err: Caused by: javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0xb38b1400: Failure in SSL library, usually a protocol error
W/System.err: error:100000f7:SSL routines:OPENSSL_internal:WRONG_VERSION_NUMBER (external/boringssl/src/ssl/tls_record.c:192 0xa769d1aa:0x00000000)
W/System.err: at com.android.org.conscrypt.NativeCrypto.SSL_do_handshake(Native Method)
W/System.err: at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:357)
W/System.err: ... 14 more
setUsernameAndPassword() method is missing.
val config= XMPPTCPConnectionConfiguration.builder()
.setXmppDomain(mDomainName)
.setUsernameAndPassword(mUsername,mPassword)
.setDebuggerEnabled(true)
.setSecurityMode(ConnectionConfiguration.SecurityMode.disabled)
mConnection= XMPPTCPConnection(config.build())
mConnection!!.connect().login()
W/System.err: Caused by: javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0xb38b1400: Failure in SSL library, usually a protocol error
W/System.err: error:100000f7:SSL routines:OPENSSL_internal:WRONG_VERSION_NUMBER (external/boringssl/src/ssl/tls_record.c:192 0xa769d1aa:0x00000000)
Your Android platform does not like the SSL/TLS version your Openfire uses.
I'm having trouble connecting Android studio emulator to Internet behind proxy.
I have enabled permission in android Manifest.xml
<uses-permission android:name="android.permission.INTERNET" />
And the app works perfectly well in USB Debug mode.
This is the error i get when i run the app on Emulator.
Following is my Logcat .
D/makeGitHubSearchQuery: Inside Function
D/makeGitHubSearchQuery: HTTP
D/makeGitHubSearchQuery: https://api.github.com/search/repositories?q=HTTP&sort=stars
D/OnOptionsItemSelected: action_search
W/System.err: java.net.UnknownHostException: Unable to resolve host "api.github.com": No address associated with hostname
W/System.err: at java.net.InetAddress.lookupHostByName(InetAddress.java:470)
W/System.err: at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
W/System.err: at java.net.InetAddress.getAllByName(InetAddress.java:215)
W/System.err: at com.android.okhttp.internal.Network$1.resolveInetAddresses(Network.java:29)
W/System.err: at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:188)
W/System.err: at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:157)
W/System.err: at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:100)
W/System.err: at com.android.okhttp.internal.http.HttpEngine.createNextConnection(HttpEngine.java:357)
W/System.err: at com.android.okhttp.internal.http.HttpEngine.nextConnection(HttpEngine.java:340)
W/System.err: at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:330)
W/System.err: at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:248)
W/System.err: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:433)
W/System.err: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:384)
W/System.err: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:231)
W/System.err: at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getInputStream(DelegatingHttpsURLConnection.java:210)
W/System.err: at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java)
W/System.err: at com.example.android.datafrominternet.utilities.NetworkUtils.getResponseFromHttpUrl(NetworkUtils.java:76)
W/System.err: at com.example.android.datafrominternet.MainActivity$GithubQueryTask.doInBackground(MainActivity.java:77)
W/System.err: at com.example.android.datafrominternet.MainActivity$GithubQueryTask.doInBackground(MainActivity.java:71)
W/System.err: at android.os.AsyncTask$2.call(AsyncTask.java:295)
W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:237)
W/System.err: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
W/System.err: at java.lang.Thread.run(Thread.java:818)
W/System.err: Caused by: android.system.GaiException: android_getaddrinfo failed: EAI_NODATA (No address associated with hostname)
W/System.err: at libcore.io.Posix.android_getaddrinfo(Native Method)
W/System.err: at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:55)
W/System.err: at java.net.InetAddress.lookupHostByName(InetAddress.java:451)
Please guide me in setting the Proxy settings in Android emulator.
Use this command to open emulator with the desired proxy.
emulator -avd [emulator_name] -http-proxy [proxy ip address]:[port]
official docs
I tried adding a retry policy (https://stackoverflow.com/a/22169775/2098493)
but the error persist when file being uploaded is larger than 1mb.
W/System.err: com.android.volley.NoConnectionError: javax.net.ssl.SSLException: Write error: ssl=0xafc3fe00: I/O error during system call, Connection reset by peer
W/System.err: at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:151)
W/System.err: at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:112)
W/System.err: Caused by: javax.net.ssl.SSLException: Write error: ssl=0xafc3fe00: I/O error during system call, Connection reset by peer
W/System.err: at com.android.org.conscrypt.NativeCrypto.SSL_write(Native Method)
W/System.err: at com.android.org.conscrypt.OpenSSLSocketImpl$SSLOutputStream.write(OpenSSLSocketImpl.java:765)
W/System.err: at com.android.okio.Okio$1.write(Okio.java:70)
W/System.err: at com.android.okio.RealBufferedSink.emitCompleteSegments(RealBufferedSink.java:116)
W/System.err: at com.android.okio.RealBufferedSink.write(RealBufferedSink.java:44)
W/System.err: at com.android.okhttp.internal.http.RetryableSink.writeToSocket(RetryableSink.java:77)
W/System.err: at com.android.okhttp.internal.http.HttpConnection.writeRequestBody(HttpConnection.java:240)
W/System.err: at com.android.okhttp.internal.http.HttpTransport.writeRequestBody(HttpTransport.java:77)
W/System.err: at com.android.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:622)
W/System.err: at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:388)
W/System.err: at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:332)
W/System.err: at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:500)
W/System.err: at com.android.okhttp.internal.http.DelegatingHttpsURLConnection.getResponseCode(DelegatingHttpsURLConnection.java:105)
W/System.err: at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:25)
W/System.err: at com.android.volley.toolbox.HurlStack.performRequest(HurlStack.java:110)
W/System.err: at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:96)
Thanks for your advice.
The solution was a combination of adding Volley Retry Policy and making sure back-end and server (nodejs/nginx) max uploaded file size are both set correctly.
//where RETRY_DEFAULT_TIMEOUT_MS = 5000, RETRY_DEFAULT_MAX_RETRIES = 3, RETRY_DEFAULT_BACKOFF_MULT = 2.0f
request.setRetryPolicy(new DefaultRetryPolicy(RETRY_DEFAULT_TIMEOUT_MS,
RETRY_DEFAULT_MAX_RETRIES,
RETRY_DEFAULT_BACKOFF_MULT));
I have a simple code and there is an exception coming, can't figure out why?
My code:
Document document= Jsoup.connect("https://kolkatatrafficpolice.net/").get();
Stack trace:
javax.net.ssl.SSLHandshakeException: Connection closed by peer
W/System.err: at com.android.org.conscrypt.NativeCrypto.SSL_do_handshake(Native Method)
W/System.err: at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:357)
W/System.err: at com.android.okhttp.Connection.connectTls(Connection.java:235)
W/System.err: at com.android.okhttp.Connection.connectSocket(Connection.java:199)
W/System.err: at com.android.okhttp.Connection.connect(Connection.java:172)
W/System.err: at com.android.okhttp.Connection.connectAndSetOwner(Connection.java:367)
W/System.err: at com.android.okhttp.OkHttpClient$1.connectAndSetOwner(OkHttpClient.java:130)
W/System.err: at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:330)
W/System.err: at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:247)
W/System.err: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:457)
W/System.err: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:126)
W/System.err: at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.connect(DelegatingHttpsURLConnection.java:89)
W/System.err: at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java)
W/System.err: at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:571)
W/System.err: at org.jsoup.helper.HttpConnection$Response.execute(HttpConnection.java:548)
W/System.err: at org.jsoup.helper.HttpConnection.execute(HttpConnection.java:235)
W/System.err: at org.jsoup.helper.HttpConnection.get(HttpConnection.java:224)
W/System.err: at com.pritesh.trafficviolation.GetHtml.doInBackground(MainActivity.java:29)
That server is using an unrecognized certificate authority.
If this is your server, and you are intentionally doing this (e.g., this is a self-signed certificate), you would need to configure JSoup/OkHttp to use that self-signed certificate.
Otherwise, your problems lie with the server.