-1
votes
1answer
37 views

HAProxy - proxy to webserver via tcp

I have a simple web application, All requests to that application are HTTP based (RESTfull API and standard ajax) I have an haproxy before my tomcat cluster. So now i have clients that http request ...
0
votes
1answer
43 views

Off-loading HTTP traffic

Need help in off loading HTTP traffic. My web server is having a lot of traffic resulting in slow response. It is also getting requests on port 80 from various mobile applications too. Traffic from ...
4
votes
2answers
164 views

Optimizing OS for HTTP requests

We make a lot of HTTP requests. Recently, we've started thinking about optimizations at the OS level to make more requests from a single machine. In order to check the performance of our OS, I've ...
3
votes
3answers
865 views

How do high traffic sites service more than 65535 TCP connections?

If there is a limit on the number of ports one machine can have and a socket can only bind to an unused port number, how do servers experiencing extremely high amounts (more than the max port number) ...
0
votes
2answers
202 views

Unable to POST/Upload files to a PHP page

I have a weird problem when I try to post contents or upload files by php to my server. After submitting the form it sleeps for a while then shows a page loading error. I tried different contents and ...
0
votes
0answers
134 views

Nginx growth of writing connections

I have a web server: ubuntu nginx+uwsgi+postgresql and a stats server: where munin2 is installed. The nginx app server has nginx-1.2.1 with ngx_pagespeed module installed by compilation, taken from ...
0
votes
3answers
4k views

netstat shows many times deploy.akamaitechnologies.com connected to my server

Many times, after running netstat on my server, I find one of IP addresses belonging to deploy.akamaitechnologies.com connected to my server, do someone has an idea on what is happening on my server ? ...
4
votes
1answer
623 views

HTTP, TCP, UDP and connectionless

I am a bit confused with HTTP lately. Some facts are that TCP can operate connection orientated or connectionless, this I understand. TCP though is connection-oriented while UDP is connectionless ...
1
vote
1answer
273 views

130s timeout when accessing service exposed on HTTPS through HTTP

I have windows client application and windows service hosting a web service over HTTPS (on behind it uses standard http.sys). Everything is ok except the situation where user makes a mistake and uses ...
5
votes
2answers
1k views

How do I optimize TCP stack for HTTP server?

I have a HTTP server that serves only two kinds of page: about 10 KB and about 16 KB (both compressed, other files are from CDN). As the latency is quite high (ping takes more than 300 ms), I want to ...
2
votes
2answers
379 views

In Ubuntu, is there something I can run that checks the HTTP requests coming in?

I'm running Node.js. But for some reason, requests are not being caught by the server. (http://stackoverflow.com/questions/9247482/node-js-server-not-receiving-ajax-requests) Is there any way to ...
2
votes
0answers
251 views

A tool to measure overhead of establishing TCP connections

I need a tool which would while doing port forwarding measure how much time was spent establishing TCP connections vs total time passed. Charles debugging proxy has the port forwarding feature and ...
2
votes
2answers
1k views

When does a browser send HTTP payload separately from the HTTP request?

Under what circumstances would you expect a web browser split an HTTP request into two IP packets, even if the sum of the packet sizes is still less than the maximum segment size? I would assume that ...
0
votes
1answer
1k views

What is responsible for Connect/Send/Wait in a HTTP request?

Services like pingdom and Google speed analyze the time consumed for reading a HTTP file. This includes DNS: Obviously, DNS management to interpret the namespaces is responsible. Connect: ??? Send: ...
7
votes
2answers
2k views

How can I take advantage of IW10 in kernel 2.6.33?

I've read that 2.6.33+ allows setting custom cwnd. if the IW is 10 by default (for all distros? only some?) how does one view what the current IW is on a particular compiled kernel? references: ...
0
votes
1answer
83 views

Maintaining same TCP session, load balacing

With http live streaming (HLS) we need to deliver video segments one after other to the player to play them in a continuous fashion. Segments are present on many streaming servers and we would load ...
0
votes
1answer
601 views

Forward non HTTP traffic on port 80

I'm creating an Android application that uses MQTT protocol to send real time messages, however the local firewall is strict and blocks most ports so the android app can not connect. (Server is ...
2
votes
2answers
650 views

Why do I see different TCP behaviour between IIS and FTP server applications on Windows 2003?

I am comparing Wireshark traces of a 10MB file download file from: the FileZilla FTP server and IIS (using HTTP) on the same Windows 2003 server. The FTP download performs faster and the trace ...
2
votes
1answer
373 views

How to route all outgoing TCP connections using HTTP CONNECT on Linux

I have a Linux system which is behind a firewall, but it can connect to a HTTP proxy which passes all CONNECT commands through. How can I configure the Linux system to make DNS requests over TCP over ...
2
votes
1answer
1k views

Why do I see an IP packet with size 2960, way above the MTU setting of 1500 on the interface and it gets through?

I am analyzing traffic between a client and a Linux webserver running on a HP blade server, the client sometimes gets stuck waiting for more data when the webserver has closed the connection. The ...
-3
votes
4answers
22k views

How do I check how many HTTP connections are open currently? [closed]

I want to know how many people are connected to my server. Since I'm doing comet applications, this is important
0
votes
1answer
2k views

How to change port on simplehttpserver in linux?

How to change port from 8000 on simplehttpserver in linux?
2
votes
2answers
2k views

Millions of SYN_RECV connections, no DDoS

We have such server structure: reverse proxy (nginx) -> worker (uwsgi) -> postgresql / memcached. All servers are in local network behind router, with NATed external ip:ports (http/s 80/443 to proxy, ...
4
votes
1answer
576 views

tcpdump and congestion window

Sniffing http traffic to my (linux) server it seems like it always responds advertising a window size of 14. It isn't affected if I change the default initcwnd size (with ip route), and it doesn't ...
9
votes
4answers
22k views

How do I make cURL use keepalive from the command line?

I'm trying to verify that HTTP persistent connections are being used during communication with a Tomcat webserver I've got running. Currently, I can retrieve a resource on my server from a browser ...
2
votes
5answers
3k views

I am looking for a good load balancing (or reverse proxy) software for TCP and HTTP, any suggestions? [closed]

I am looking for a good load balancing (or reverse proxy) software for TCP and HTTP, any suggestions?
1
vote
2answers
201 views

I am looking for a good load balancing (or reverse proxy) software for TCP and HTTP, any suggestions? [duplicate]

Possible Duplicate: I am looking for a good load balancing (or reverse proxy) software for TCP and HTTP, any suggestions? I am looking for a good load balancing (or reverse proxy) software ...
0
votes
2answers
456 views

How can I get around TCP timeouts on my international link?

I have a client/sever application that communicates using HTTP. The server is on the other side of the Earth from some of the clients. The traffic that the server and client communicate is very low ...
0
votes
3answers
651 views

Forwarding HTTP requests from old server to new server

I am moving many sites from an old web server to a new one. It needs to be done as transparently as possible. The sites are backed by a WCMS, so there is a possibility that clients can make changes ...