When I was working on debug mode (with "flutter run") by using my device (real), Socket.Connect() method doesn't work.
Also I would like to say that this Connect method is in "dart:io" library.
In shortly;
I opened a server (TCP) with Python.
I wrote the Flutter client like below to be able to connecting to the server in Python.
Future den() async {
print("Started");
Socket sock = await Socket.connect("192.168.0.159", 5431);
print("Done +++++++++++++++++++++++++"); }
However, I took a SocketError as Connection time out.
The error message I took:
E/flutter (17655): [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: SocketException: OS Error: Connection timed out, errno = 110, address = 192.168.0.159, port = 43836
NOTE:
I tried to change the manifest file by adding INTERNET permission, but it is not working.
It was a strange problem, because there is no problem the code I shared. Windows Defender performed a rule to block to open a port as server. Hence, I started the server on my machine, however, I couldn't connect it from my Android device.
Maybe, the error code that is shown by Flutter isn't clear. If you took a error about socket programming for connection or binding, looking to Defender (or firewall) can be affective method. Unfortunately, as I was just starting to learn Flutter, I thought of checking out Defender afterwards.
Related
I am using Flutter with Flask at back end. I want to send an image from flutter to Flask for processing.
enter image description here
But I am getting this error in Android studio:
[ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: SocketException: OS Error: Broken pipe, errno = 32, address = 10.0.2.2, port = 51420
My flask terminal says:
127.0.0.1 - - [11/May/2021 23:07:56] "←[37mPOST / HTTP/1.1←[0m" 200 -
Your server process has received a SIGPIPE writing to a socket. This usually happens when you write to a socket fully closed on the other (client) side. This might be happening when a client program doesn't wait till all the data from the server is received and simply closes a socket (using close function).
In a C program you would normally try setting to ignore SIGPIPE signal or setting a dummy signal handler for it. In this case a simple error will be returned when writing to a closed socket. In your case a python seems to throw an exception that can be handled as a premature disconnect of the client.
I am trying to connect two peer in flutter webrtc but i am getting below error.I am using firebase as a signalling server.
[ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: Unable to RTCPeerConnection::setRemoteDescription: peerConnectionSetRemoteDescription(): WEBRTC_SET_REMOTE_DESCRIPTION_ERROR: Failed to set remote answer sdp: Called in wrong state: stable
I am using below code in listening to the changes in firebase
if (val['t'] == "ans") {
assert(isInitiator);
_peerCon.setRemoteDescription(
RTCSessionDescription(
val['sdp'],
val['tp'],
),
);
return;
}
One peer connection can only set one remote description.
You are trying to setRemoteDescription on a peer with an already established connection. That's why you getting this error.
Check this thread for more details:
Failed to set remote answer sdp: Called in wrong state: stable
How do I use NMSSH in Swift?
When I execute the code below, I get these messages in my debug console:
2019-11-14 19:15:53.830479+0100 unLock[49480:480479] NMSSH: Start 192.168.178.97 resolution
2019-11-14 19:15:53.832950+0100 unLock[49480:480481] NMSSH: Socket connection to 192.168.178.97 on port 44 failed with reason -1, trying next address...
2019-11-14 19:15:53.833005+0100 unLock[49480:480481] NMSSH: Failure establishing socket connection
2019-11-14 19:15:53.833047+0100 unLock[49480:480481] NMSSH: Disconnected
The code:
let session = NMSSHSession(host: "192.168.178.97:44", andUsername: "root")
session.connect()
if session.isConnected == true{
session.authenticate(byPassword: "alpine")
//if session.isAuthorized == true {
session.channel.execute("killall SpringBoard", error: nil)
print("killed Springboard")
//}
}
What I've done is allowing arbitrary Loads in App Transport Security because I thought the problem may be that the ssh server isn't HTTPS, but it did not help. The fact that I try to SSH into an iPhone isn't the cause Haswell, as I tried it with a Raspberry Pi, same result. Also don't mind port 44 as it is the correct port for checkra1n.
You can see similar type problem here.
How to use NMSSH in swift
Also Read the Readme file for NMSSH and setup this framework using podfile.
pod 'NMSSH'
Read Documentation here
https://github.com/NMSSH/NMSSH
I am facing below error while accessing the web services in android app. But its working fine in iOS app.Pl help us to resolve this issue
[ERROR:flutter/lib/ui/ui_dart_state.cc(148)] Unhandled Exception: SocketException: OS Error: Connection refused, errno = 111, address = localhost, port = 47992
Also I have faced the same problem.
The way I have solved my problem is,
I made sure that there is no error in my code. Then I uninstalled my app, after that I restarted my phone and install the app again. Then it start working.
I hope this will help..
I have a application which will receive files from FTP and uploaded in to Mainframe server.
I am getting a "Socket error 10053 software caused connection abort" when I assign
FTPTransfertype = ftASCII
If I change this to FtBinary I'm not getting this error but data not uploaded properly in this mode.
I am getting this error only in application server (Production server) not in the development server (here I faced this issue only once in the FTPTransfertype = ftASCII assignment)
I have changed the FTP connectivity mode to Passive but its not working..
Please help me on this.
I recomment to see Microsoft Windows Socket Errors page:
https://msdn.microsoft.com/en-us/library/windows/desktop/ms740668(v=vs.85).aspx
In your case:
Software caused connection abort. An established connection was
aborted by the software in your host computer, possibly due to a data
transmission time-out or protocol error.