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Applications open Port numbers, used by TCP and UDP to keep tabs of different communications occurring around the network.
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If an acknowledgment is not received for that segment (or a part of that segment) before the timer runs out, then the segment (or the part of the segment that was not acknowledged) is retransmitted.
The window size could be used up in one go if a segment was large enough, however normally the window is used up by several segments of hundreds of bytes each.
The sender can send up to this amount of data before it has to wait for an update on the Receive Window size from the receiver.
The sender has to buffer all its own sent data until it receives ACKs for that data.
A Window size of one means that each byte of data is required to be acknowledged before the next one is sent.
This is inefficient and therefore the window size is often much larger and is normally a Sliding Window (as described earlier) which is dynamically negotiated during a TCP session depending on the number of errors that occur in a connection.If the window size is slowly decreasing then it shows that the application is slow to take the data off the TCP stack.If the receiver indicates a window size of 0, then the sender cannot send any more bytes until the receiver sends a packet with a window size greater than 0.Once data is sent, TCP monitors this Retransmission Time-Out (RTO) and also a Round Trip Time (RTT).If an ACK is not received by the time the RTO expires, TCP retransmits the data using an exponentially increasing value for the RTO.TCP provides reliability with ACK packets and Flow Control using the technique of a Sliding Window.Tags: Adult Dating, affair dating, sex dating