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Recent questions tagged Sockets

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sockets - Go, tcp too many open files debug

Here's a straightforward Go http (tcp) connection test script func main() { ts := httptest.NewServer(http. ... with 2,000 connections. Thanks, See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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501 views

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sockets - What's the best way to synchronize times to millisecond accuracy AND precision between machines?

From what I understand, the crystals on PC's are notorious for clock skew. If clocks are always skewing, ... any experience with PTP (IEEE1588) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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596 views

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sockets - How to write an Android SocketServer to listen on wifi

I've written a thread using java.net.SocketServer to listen on a particular port. It works fine in the android ... to pass to the SocketServer? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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465 views

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sockets - Android P2P (direct-connection) over the Internet (behind NAT)

I'm starting a small project, basically a multiplayer (as in more than two players) variation of the classic ... it worked on most cases. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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809 views

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sockets - Async connect and disconnect with epoll (Linux)

I need async connect and disconnect for tcp client using epoll for Linux. There are ext. functions in Windows, such ... can I do this? Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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759 views

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sockets - Why am I getting this SocketException in my C# service?

I have a service that is responsible for reading and writing from a server. The reading and writing is done in ... or because a queue was full See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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576 views

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sockets - Java - Read file by chunks?

I know how to read a file by bytes but cannot find a example how to read it in chunks of bytes. I ... Anyhow would be thankful for a example. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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865 views

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sockets - C# How to make a simple UDP server

Can I make UDP server and client using UdpClient class? And I need to send an Image from the server to all Clients. ... sample. I'm new to this. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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440 views

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sockets - Screen sharing in python

Hi I'm stuck and I did not find anything helpful on the internet. I'm trying to make a screen-sharing program ... shows it at computer no.2 ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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447 views

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sockets - java.net.SocketTimeoutException: Read timed out under Tomcat

I have a Tomcat based web application. I am intermittently getting the following exception, Caused by: java.net. ... might cause this issue. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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476 views

1 answer

sockets - Countdown Timer Image GIF in Email

I recently received an emailer from Onnit Labs that included a Countdown Module Timer inside the emailer using a gif ... I am a little stumped. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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461 views

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sockets - Explain http keep-alive mechanism

Keep-alives were added to HTTP to basically reduce the significant overhead of rapidly creating and closing socket ... It seems so unreal. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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699 views

1 answer

sockets - How to set the keepalive timeout in Android?

I'd like to lower the TCP keepalive time on a Socket I'm opening from 2 hours to something on the order of ten ... so that's not ideal for me. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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432 views

1 answer

sockets - Java HttpURLConnection and pooling

After reading all sort of docs on Java HttpURLConnection, I'm still quite confused as what kind of pooling it ... it would be great. Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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390 views

1 answer

sockets - setKeepAliveTimeout iOS behavior, exceeded 15 wakes in 300 sec

I am writing a VOIP application on iOS 5 and I am trying to understand how the actual communication can stay alive ... have per amount of time? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

487 views

1 answer

sockets - Multi Threaded TCP server in Python

I have created a simple multi threaded tcp server using python's threding module. This server creates a new ... variable for each connection? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

505 views

1 answer

sockets - How to get ip address from sock structure in c?

I'm writing simple server/client and trying to get client IP address and save it on server side to decide ... *)&client_addr, &clen) Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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752 views

1 answer

sockets - Specifying UDP receive buffer size at runtime in Linux

In Linux, one can specify the system's default receive buffer size for network packets, say UDP, using the ... per UDP socket in runtime? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

618 views

1 answer

sockets - How to bind to any available port?

I need an app that sends an UDP packet to some network server and receives the response. The server replies to the ... +rand(), or some other? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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524 views

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sockets - how can an application use port 80/HTTP without conflicting with browsers?

If I understand right, applications sometimes use HTTP to send messages, since using other ports is liable to cause ... to use the same port. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

708 views

1 answer

sockets - java.net.SocketException: Invalid argument: connect

My new laptop (Alienware m17x) throws a java.net.SocketException: Invalid argument: connect when I run the following ... else I can try? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

669 views

1 answer

sockets - PHP Post data with Fsockopen

I am attempting to post data using fsockopen, and then returning the result. Here is my current code: <?php ... the variable posting its data? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

968 views

1 answer

sockets - Java simple code: java.net.SocketException: Unexpected end of file from server

I wrote some simple code in Java, the method should connect to the website and return the BufferedReader. private ... Has anybody got any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

534 views

1 answer

sockets - Simple Java Client/Server Program

I'm writing my first java client/server program which just establishes a connection with the server sends it a ... is more than likely allowed? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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571 views

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sockets - What is a message boundary?

What is "message bonudaries" in the following context? One difference between TCP and UDP is that UDP preserves ... gives message a "boundary"? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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444 views

1 answer

sockets - How to tell if a connection is dead in python

I want my python application to be able to tell when the socket on the other side has been dropped. Is there a method for this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

566 views

1 answer

sockets - How do I find the current machine's full hostname in C (hostname and domain information)?

In a C project (POSIX), how do I get the fully qualified name for the current system? For example, I can get ... () to do this, if possible. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

535 views

1 answer

sockets - Fastest way to scan ports with Java

I made a very simple port scanner, but it runs too slow, so I'm looking for a way to make it scan faster. ... to 65535 in less than 5 minutes? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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