tcpsock | Package tcpsock provides easy to use interfaces | TCP library
kandi X-RAY | tcpsock Summary
kandi X-RAY | tcpsock Summary
Package tcpsock provides easy to use interfaces for TCP I/O.
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Top functions reviewed by kandi - BETA
- Parse the chat protocol buffer
- tcp client
- NewTcpServer creates a new TcpServer
- NewTcpClient returns a new TcpClient
- printStats prints the stats
- input reads from stdin
- newTcpConn creates a new TcpConn
- parseFlag parses command line arguments
- init initializes SIGINT and SIGINT SIGINT .
- genUserName generates a user name
tcpsock Key Features
tcpsock Examples and Code Snippets
Community Discussions
Trending Discussions on tcpsock
QUESTION
I'm having a problem downloading large files from an AWS S3 bucket using the golang client, I'm not an expert with golang so I would appreciate any help.
I'm creating a simple API that expose an endpoint using gin-gonic framework, when someone sends a request to that endpoint the app download a huge CSV file from an AWS S3 bucket and save the contents of the file in a local DB.
When the file size is 200 mb it works correctly but with bigger files, say 500 mb, I start getting out of memory errors.
I'm using this portion of code to create the session and donwload the file:
...ANSWER
Answered 2021-Mar-31 at 10:19By using the downloader you are unable to process the file while it is downloading: it downloads different chunks concurrently so you do not receive the bytes in order.
If you want to process the bytes as you download them, you can try using s3.S3 instead. This downloads the object in order, but only uses a single goroutine so will be slower.
Something like:
QUESTION
We are running Artifactory OSS 7.4.3 in a couple environments, all Linux (RHEL 7). They are using local repositories with standard downloads/uploads of Maven artifacts. Two of those environments have encountered a "segmentation violation" error in the past few weeks. I have not been able to find any documentation of this error occurring during regular operation. My question is how should I go about troubleshooting the error?
...ANSWER
Answered 2020-Nov-12 at 08:41This is due to a bug in the Go runtime used at that time (1.14.2), for more details see https://groups.google.com/g/golang-announce/c/XZNfaiwgt2w/m/E6gHDs32AQAJ
It's been fixed starting from Artifactory 7.7.0, so you can just upgrade to the latest release (7.10.6 when writing this message)
QUESTION
My main goal is to receive data from multiple clients to one txt file on my server. Everything is working great, clients connect to server, server recognize that they are diffrent clients, moreover, they are sending data to server (and it saves to data_r.txt file), however, they are overwriting the file. So I only gets data from the last client that sent the data. The name of file have to be the same for all clients. I have no idea what to do and how to fix it.
Server TCP
...ANSWER
Answered 2020-Apr-20 at 14:44The first thing to correct is to use open(filename, 'ab') instead of 'wb' because you want to append to the file, not truncate it.
Secondly, you have a race condition and, as the commenter has said, you should use something like a lock to synchronise access. Otherwise data will be lost sooner or later.
QUESTION
I'm running lambda using the aws-sdk-go-v2 but running into memory issues when downloading larger files. I've tried all sorts of combinations of partSize and concurrency but I either hit the timeout when setting concurrency to a small number or hit an out of memory issue.
Does anyone know how to fix this or a better or other way of downloading files from S3 using go?
...ANSWER
Answered 2020-Jan-24 at 21:53Try to set slice len/cap:
QUESTION
Data coming to this tcp server is not write into file as well as on command line.
Error is as below,
Exception in thread Thread-10: Traceback (most recent call last): File "F:\Installation\Anaconda\lib\threading.py", line 916, in _bootstrap_inner self.run() File "", line 25, in run f.write(data) TypeError: write() argument must be str, not bytes
My code:
...ANSWER
Answered 2019-Jun-28 at 10:24test this f = open(filename,'w') or this f = open(filename,'a') instead of f = open(filename,'wb')
QUESTION
I am working with go and redis to dispatch a queue (channel) of messages to subscribers. I am aiming to create an auto scaling solution that will spawn new go routines (within a certain limit) as the queue gets larger. I have the below code:
...ANSWER
Answered 2018-May-04 at 10:59Based on this
I can see from other testing I'm running that this isn't just going slowly and that the messages just aren't being taken from the channel.
I think you have a live lock in addRedisSender()
The select statement will pseudo randomly select one of the cases, either the killSwitch case, or the <-messageChannel. Except there's also another case, the default. This will always be true, meaning the for { loop will spin for ever consuming all the resources and causing a live lock as the go runtime tries to schedule more and more competing go routines.
If you remove the default: continue case then the for loop will block on the select until there's a message to read, or a kill signal.
QUESTION
Client side:
...ANSWER
Answered 2018-Jan-17 at 21:18First of all: this is unrelated to sha.
Streaming over the network is unpredictable. This line
QUESTION
I have a python socket server/client implementation. The server reads the data from the queue and pushes the data to the client.
The client reads and displays it. When I run this code the client always displays only the first 10 times in the queue. also everytime the same 10 times are being sent to the client.
Here is my data in the client.
...ANSWER
Answered 2017-Oct-06 at 15:23In run, you call l = queue_get_all(q) then you enter a loop with condition while (l). Then you never reset l. So it begins true (i.e. non-empty list always evaluates to boolean true) and stays true forever. Probably you meant to call queue_get_all again inside the loop.
I'd also mention that after that loop, you have an if not l that is superfluous since the above loop will only exit when l is false.
QUESTION
I have a socket which is sending a massiv among of byte, is often repeating the same information, but the receiver couldn't get all this bytes in a time. I had a way to slow down the sender side but now I have latencies, due that not enough bytes are coming. I need a real time transfer.
Is there a way that the receiver read the last incoming byte and discard the other ones then pursue in the program?
...ANSWER
Answered 2017-Aug-19 at 00:57Unfortuntely, there's no standard/normal way of doing this 1 -- when a new packet is received for a UDP socket that has a full receive buffer, the new packet is dropped, even when it would be preferrable to drop the older (buffered) packets.
One thing you can do is use setsockopt(fd, SOL_SOCKET, SO_RECVBUF,... to crank down the size of the socket receive buffer. Doing this will cause it to start dropping packets sooner when the receiver falls behind, paradoxically reducing the latency in processing packets, similar to bufferbloat mitigation techniques.
1there's no way to do this on Linux or BSD of which I'm aware; some real-time OSes may have a way of doing it
QUESTION
I want to do a file dispatcher, the server is loaded with a list of files and then sends them one by one with each client request. The idea is to distribute the processing of many files between 5 servers.
How could I call the ClientThread class with each client connection?
The script is only programmed to send the same file to each client request, what I want is to send a different file from a list of files in each client request.
Server.py ...ANSWER
Answered 2017-Jun-14 at 16:00I don't see what this has to do with threading or ports or anything like that. Change this:
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