Can a client process open multiple TCP connections to the same server process?

Irrespective of stateful or stateless protocols, two clients can connect to same server port because for each client we can assign a different socket (as client IP will definitely differ). Same client can also have two sockets connecting to same server port – since such sockets differ by SRC-PORT .

Can a client open three or more simultaneous connections with a given server?

Yes, a client can open three or more simultaneous connections with a given server, although the suggested number of concurrent persistent connections is two.

Does HTTP keep connection open?

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.

How will you create persistent connection between the server and the client?

To maintain a persistent connection, TCP keep-alive packets are sent to prevent the connection from timing out. An open connection is faster for frequent data exchanges. Communications overhead is saved by leaving a connection open rather than opening and closing sessions for each request.

Can TCP handle multiple clients?

How do Multiple TCP Clients Connect Simultaneously to a Single Port on a Server? It is possible for a client to request a specific TCP port to connect from using the bind() system call; however, if two clients request the same port, only the first request will succeed.

When using HTTP 1.1 with persistent connection explain how the client and server signal to each other that the persistent connection is being closed?

8.1. A client that supports persistent connections MAY “pipeline” its requests (i.e., send multiple requests without waiting for each response). A server MUST send its responses to those requests in the same order that the requests were received.

Can 2 distinct webpages be sent over the same persistent connection?

Two distinct web pages can be sent over the same persistent connection. With non-persistent connections between browser and origin server, it is possible for a single TCP segment to carry two distinct HTTP request messages.

How long can a HTTP connection stay open?

The HTTP persistent connections do not use separate keepalive messages, they just allow multiple requests to use a single connection. However, the default connection timeout of Apache httpd 1.3 and 2.0 is as little as 15 seconds and just 5 seconds for Apache httpd 2.2 and above.

How is a HTTP connection closed?

CICS writes a Connection: close header on the request or, for a server at HTTP/1.0 level, omits the Connection: Keep-Alive header. Specifying this option means that the server can close its connection immediately after sending the final response, rather than waiting for any further requests before timing out.

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.

How long can a HTTP request last?

How multiple clients can connect to the same port on server?

Multiple clients can connect to the same port (say 80) on the server because on the server side, after creating a socket and binding (setting local IP and port) listen is called on the socket which tells the OS to accept incoming connections.

What happens if I connect to the same web server twice?

Simply, if I connect to the same web server twice from my client, the two connections will have different source ports from my perspective and destination ports from the web server’s. So there is no ambiguity, even though both connections have the same source and destination IP addresses.

What happens when a client connects to a server?

When a client connects to a server, it picks a random, unused high-order source port. This way, a single client can have up to ~64k connections to the server for the same destination port. So, this is really what gets created when a client connects to a server:

What port does the server listen at when a client connects?

Client A: 5.5.5.5 Client B: 10.10.10.10 They both try to connect to the server at port 80. Now, from googling what I got is, the server listens at port 80for incoming requests. Then lets say a client Atries to connect to the server (make TCP/IP connection). During which a socket is created between these two.