This depends in part on your operating system. There is however no limit on a specific port. There is a limit on the number of concurrent connections however, typically limited by the number of file descriptors the kernel supports (eg 2048). The thing to remember is that a TCP connection is unique and a connection … Read more
It will be split when it hits a network device with a lower MTU than the packet’s size. Most ethernet devices are 1500, but it can often be smaller, like 1492 if that ethernet is going over PPPoE (DSL) because of the extra routing information, even lower if a second layer is added like Windows … Read more
This means the other side is using another version of TLS and you are using an older version. Set up security attribute to TLS12 before making the connection. This is a widely known problem, as many providers start using TLS12 (e.g. paypal,amazon and so on). ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
Access an HTTPS url with Java is the same then access an HTTP url. You can always use the URL url = new URL(“https://hostname:port/file.txt”); URLConnection connection = url.openConnection(); InputStream is = connection.getInputStream(); // .. then download the file But, you can have some problem when the server’s certificate chain cannot be validated. So you may … Read more
Ad 1) No, there is not any socket link-management interface exposed to user to test/reset the state of the FSA-to-FSA link in ZeroMQ framework. Yes, XREQ/XREP may help you overcome the deadlocks, that may & do happen in REQ/REP Scaleable Formal Communication Pattern: Ref.: REQ/REP Deadlocks >>> https://stackoverflow.com/a/38163015/3666197 Fig.1: Why it is wrong to use … Read more
1) Read the subnet mask and calculate all the IP addresses in the subnet mask you are in. Then you can either user ICMP ping (standard ping) or ARP ping to list all the valid IP addresses. ARP Ping is much reliable in a subnet setting. 2) You can nmap to list all the hosts … Read more
You could change it to: android:targetSdkVersion=”9″ API 10 corresponds to honeycomb, while 9 is gingerbread. This behavior is only seen in APIs 10 and above. However, I would advise against this. Instead, you should move any long running operations, or operations with the possibility of running for long into a background thread, like an AsyncTask. … Read more
If you are coding in Java, try using InetAddress InetAddress addr = InetAddress.getByName(“173.194.36.37”); String host = addr.getHostName(); System.out.println(host);
Yes, open a netlink socket and listen to the RTMGRP_LINK (network interface create/delete/up/down events) multicast groups. The netlink man page here has a specific example to do this.
Resource monitor uses ETW – thankfully, Microsoft have created a nice nuget .net wrapper to make it easier to use. I wrote something like this recently to report back my process’s network IO: using System; using System.Diagnostics; using System.Threading.Tasks; using Microsoft.Diagnostics.Tracing.Parsers; using Microsoft.Diagnostics.Tracing.Session; namespace ProcessMonitoring { public sealed class NetworkPerformanceReporter : IDisposable { private DateTime … Read more