I developed a simple application, calls currency converter webservice from www.webservicex.net. and deployed it on GenyMotion AndroVM.
But I am getting below error,
"Cannot connect to www.webservicex.net on port 80:
java.net.ConnectException: Connection timed out"
We have proxy and I defined proxy settings as well. I am able to access internet using browser inside AndroVM.
Please help
In Android, the system's proxy settings is not applied to all Http requests you made inside your app. It is applied natively inside the browser only that's the reason why you can use it.
Each application has to handle it "manually".
My first and quick advise is to use OkHttp as Http client because it handles it for you.
Or you can get the values manually and configure yourself your requests like this (gathered from here):
String host = System.getProperty("http.proxyHost");
String port = System.getProperty("http.proxyPort");
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpHost proxy = new HttpHost(host, Integer.parseInt(port));
httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);
Related
I try to access a graphql api.
The post request goes via a proxy chain of:
local http proxy -> local socks5 proxy -> graphql api host
However, I get java.util.concurrent.ExecutionException: javax.net.ssl.SSLHandshakeException: Failed to create SSL connection in
io.smallrye.graphql.client.vertx.typesafe.VertxTypesafeGraphQLClientProxy#postSync
I did not find any info or method to disable ssl checks, like verify hosts = false etc. in the used TypesafeGraphQLClientBuildernor in the built client.
How to get rid of the ssl checks in this local dev only test setup?
In debug I see that the built client io.smallrye.graphql.client.vertx.typesafe.VertxTypesafeGraphQLClientProxy
has httpClient.options.verifyHost=true which I would like to set to false.
But I don't know how/where to manipulate or replace the httpClient within the VertxTypesafeGraphQLClientProxy.
Any hints please?
I'm a beginner in Rust and WebSockets and I'm trying to deploy on Heroku a little chat backend I wrote (everything works on localhost). The build went well and I can see the app is running, and I'm now trying to connect to the WebSocket from a local HTML/Javascript frontend, but it is not working.
Here is my code creating the WebSocket on my rust server on Heroku (using the tungstenite WebSocket crate):
async fn main() -> Result<(), IoError> {
let port = env::var("PORT").unwrap_or_else(|_| "8080".to_string());
let addr = format!("0.0.0.0:{}", port);
// Create the event loop and TCP listener we'll accept connections on.
let try_socket = TcpListener::bind(&addr).await;
let listener = try_socket.expect("Failed to bind");
println!("Listening on: {}", addr);
and here is the code in my Javascript file that tries to connect to that WebSocket:
var ws = new WebSocket("wss://https://myappname.herokuapp.com/");
My web client gets the following error in the console:
WebSocket connection to 'wss://https//rocky-wave-51234.herokuapp.com/' failed
I searched to find the answer to my issue but unfortunately didn't find a fix so far. I've found hints that I might have to create an HTTP server first in my backend and then upgrade it to a WebSocket, but I can't find a resource on how to do that and don't even know if this is in fact the answer to my problem. Help would be greatly appreciated, thanks!
I think your mistake is the URL you use:
"wss://https://myappname.herokuapp.com/"
A URL usually starts with <protocol>://. The relevant protocols here are:
http - unencrypted hypertext
https - encrypted hypertext
ws - unencrypted websocket
wss - encrypted websocket
So if your URL is an encrypted websocket, it should start only with wss://, a connection cannot have multiple protocols at once:
"wss://myappname.herokuapp.com/"
I am using pybliometrics, a Python interface to the Scopus API, to download the abstracts of some papers.
Unfortunately Scopus only works inside the network of the university that subscribed to it. I am currently at home and whenever I try to download something using pybliometrics it gives me the following error:
pybliometrics.scopus.exception.Scopus401Error: The requestor is not authorized to access the requested view or fields of the resource
I need to use my university's proxy in order to enter the internet with the IP address of my university. The proxy has a WPAD configuration file available, but I fail to realize how to use it with pybliometrics. The pybliometrics documentation says to add a block in the configuration file like this:
[Proxy]
ftp = socks5://127.0.0.1:1234
http = socks5://127.0.0.1:1234
https = socks5://127.0.0.1:1234
But this proxy requires authentication. How can I specify the proxy username and password?
EDIT: I have tried setting up the block in config.ini like:
[Proxy]
ftp = http://username:password#proxy.thing.it:8080
http = http://username:password#proxy.thing.it:8080
https = http://username:password#proxy.thing.it:8080
but it still fails with the following error message:
requests.exceptions.ProxyError: HTTPSConnectionPool(host='api.elsevier.com', port=443): Max retries exceeded with url: /content/abstract/scopus_id/84983158344?view=META_ABS (Caused by ProxyError('Cannot connect to proxy.', OSError('Tunnel connection failed: 407 Proxy Authentication Required')))
From our perspective the API will work via a proxy as long as the proxy is configured correctly. I would suggest you speak to the provider of the proxy to see if they can help.
We don't have specific instructions on how to use APIs with a proxy (as there are many potential different versions and potential configurations); however, the general instructions are here:
https://service.elsevier.com/app/answers/detail/a_id/29026/supporthub/elsevieraccess/
To me your new proxy block looks suspicious. It funnels ftp and https requests through the http as well. Maybe try ftp and https as protocols in the corresponding sections.
The other solution is to ask Scopus Integration Support for an InstToken, which you use instead of a proxy. You then specify the InstToken in the configuration file as well.
The problem was that my proxy requires DigestAuth rather than BasicAuth.
I'm running a micronaut microservice on a Win 7.
My GET Request looks like : http://localhost:8080/maps/myreq.
The controller use a httpclient to send request to an external webseite : image.maps.api.here.com
When running without proxy, all went fine and the response is ok (an image).
But when running behind the proxy, connection timed out. Proxy works fine for any other applications or browser.
How to set micronaut server behind proxy to properly root requests?
edit : when sending a request, the netty server respond with an error : unable to connect to image.maps.api.here.com:xx.xx.xx.xx:xxxx where xx.xx.xx.xx:xxxx is the proxy
How to set micronaut server behind proxy to properly root requests?
You can set the https.proxyHost, https.proxyPort, http.proxyUser and http.proxyPassword system properties. A common place to do that is in the MN_OPTS environment variable. For example, you could set MN_OPTS to have a value like "-Dhttps.proxyHost=127.0.0.1 -Dhttps.proxyPort=3128 -Dhttp.proxyUser=test -Dhttp.proxyPassword=test".
See https://docs.micronaut.io/1.1.0/guide/index.html#proxy for more info.
I hope that helps.
I fixed the problem with settings the proxy for the CLI but also by setting the proxy in the application.yml like here :
https://github.com/micronaut-projects/micronaut-core/issues/1611
I am trying to connect from CRM Plugin to External SOAP API. It gives me error.
I am using Isolation Mode as None.
When I connect the same API using Console APP it works fine. I executed the Console APP from Server and it connects and responds Fine.
I googled a bit got some leads but probably I lack capability to understand/ pinpoint the issue.
Code Snippet below
WebRequest request = WebRequest.Create("URL");
request.Method = "GET";
//request.Credentials = new NetworkCredential("USERNAME", "PASSWORD");
WebResponse response = request.GetResponse();
HttpWebResponse webresponse = (HttpWebResponse)response;
if (webresponse.StatusCode == HttpStatusCode.OK)
{
tracing.Trace($" Resposne is correct i.e OK");
}
When I debug using Plugin Registration Tool, Tool breaks up and exits.
Error from Tracing:
A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond
at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)
at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception)
--- End of inner exception stack trace ---
at System.Net.HttpWebRequest.GetResponse()
Reason why it was not working:
Customer (OnPrem) uses Proxy to connect to Web.
When I was running Console App on server it was running on my Logged on context (outside CRM) i.e. user who logged on Server.
However, When I tried to call website from CRM may it be from Isolation Mode = None OR Sandbox, The services that runs under specific user did not have proxy added to them.
For Example running plugin under Isolation Mode = NONE i.e. directly under the context of APPPool Service "crmtestappserv" did not have proxy and even using mere Internet Explored under the context of same user was not able to open google.com unless proxies were Added.
Steps Taken to Solve the issue: In our plugin Code, when we make an HTTP request we add proxy to the request. This solved our issue.