- How do I keep my HTTP request alive?
- How send data from server to client without request?
- What is the difference between non persistent HTTP and persistent HTTP?
- Is https faster than HTTP?
- How long should an HTTP request take?
- How does an HTTP request travel over a network?
- What is slow HTTP attack?
- Which HTTP request should not alter the state of the server?
- What is http pooling?
- What is http keep alive timeout?
- Is http persistent or non persistent?
- Is http slow?
- How check http keep alive?
- How does HTTP keep alive work?
- Can http response has empty body?
- What is HTTP flood attack?
- What is keep alive in JMeter?
- What is non persistent?
How do I keep my HTTP request alive?
Keep-Alive is enabled by explicitly requesting it via HTTP header.
If you don’t have access to your web server configuration file, you can add HTTP headers yourself by using .
How send data from server to client without request?
You can use web-sockets which are two way communication between client and server that remain open and allow the server to send without request from the client. However web-sockets are new and browser support is only for the most current browsers.
What is the difference between non persistent HTTP and persistent HTTP?
Non-persistent and persistent are the two types of HTTP connections used to connect the client with the webserver. The non-persistent connection has connection type 1.0 , while the persistent connection has connection type 1.1 .
Is https faster than HTTP?
The addition of TLS (or SSL for that matter) means there is more processing that goes on, specifically encryption and decryption of the data. Even if that takes only . 3 seconds, it still means that HTTPS is a teensy bit slower than HTTP.
How long should an HTTP request take?
Statistical analysis of page load speed data collected using the Navigation Timing API shows that an HTTP request can be reasonably approximated to 0.5 seconds.
How does an HTTP request travel over a network?
The browser sends an HTTP request message to the server, asking it to send a copy of the website to the client (you go to the shop and order your goods). This message, and all other data sent between the client and the server, is sent across your internet connection using TCP/IP.
What is slow HTTP attack?
Slow HTTP attacks are denial-of-service (DoS) attacks in which the attacker sends HTTP requests in pieces slowly, one at a time to a Web server. If an HTTP request is not complete, or if the transfer rate is very low, the server keeps its resources busy waiting for the rest of the data.
Which HTTP request should not alter the state of the server?
An HTTP method is safe if it doesn’t alter the state of the server. In other words, a method is safe if it leads to a read-only operation. Several common HTTP methods are safe: GET , HEAD , or OPTIONS . All safe methods are also idempotent, but not all idempotent methods are safe.
What is http pooling?
PoolingHttpClientConnectionManager is a more complex implementation that manages a pool of client connections and is able to service connection requests from multiple execution threads. Connections are pooled on a per route basis.
What is http keep alive timeout?
timeout : indicating the minimum amount of time an idle connection has to be kept opened (in seconds). Note that timeouts longer than the TCP timeout may be ignored if no keep-alive TCP message is set at the transport level.
Is http persistent or non persistent?
Therefore, HTTP is called a stateless protocol. HTTP can use both nonpersistent connections and persistent connections. A nonpersistent connection is the one that is closed after the server sends the requested object to the client. In other words, the connection is used exactly for one request and one response.
Is http slow?
HTTP is hurt by slow start on both the client and server sides. Because the HTTP headers are longer than the MSS, the client TCP needs to use two segments (Stage 2).
How check http keep alive?
In order to check if your pages are delivered with a Keep-Alive header, you can use the HTTP Header Checker tool. This will display the Connection: Keep-Alive field if the HTTP Keep-Alive header is enabled.
How does HTTP keep alive work?
HTTP keep-alive, a.k.a., HTTP persistent connection, is an instruction that allows a single TCP connection to remain open for multiple HTTP requests/responses. By default, HTTP connections close after each request. … Enabling the keep-alive header allows you to serve all web page resources over a single connection.
Can http response has empty body?
Any response message which “MUST NOT” include a message-body (such as the 1xx, 204, and 304 responses and any response to a HEAD request) is always terminated by the first empty line after the header fields, regardless of the entity-header fields present in the message.
What is HTTP flood attack?
An HTTP flood attack utilizes what appear to be legitimate HTTP GET or POST requests to attack a web server or application. These flooding attacks often rely on a botnet, which is a group of Internet-connected computers that have been maliciously appropriated through the use of malware such as a Trojan Horse.
What is keep alive in JMeter?
Keep-alive is an HTTP feature to keep a persistent connection between round trips, so that it does not initiate a new one on every single request. … JMeter sets the Connection: keep-alive header. This does not work properly with the default HTTP implementation, as connection re-use is not under user-control.
What is non persistent?
: not persistent: such as. a : decomposed rapidly by environmental action nonpersistent insecticides. b : capable of being transmitted by a vector for only a relatively short time nonpersistent viruses.