How does the TCP protocol ensure data transfer in HTTP connections?

TCP (Transmission Control Protocol) provides reliable data transfer for HTTP connections through several key mechanisms:

• Connection establishment (3-way handshake): before data transfer, the client and server establish a connection by exchanging SYN and ACK packets.
• Reliability: TCP guarantees the delivery of data in the correct order, using segment numbering and acknowledgments (ACK).
• Flow control: TCP regulates the data transfer rate to prevent overwhelming the receiver.
• Congestion control: it adapts the transfer rate based on network conditions.
• Retransmission: if an acknowledgment is not received, segments are resent.

In the context of HTTP, this means that request and response data are transmitted reliably and in order, which is critical for the correct operation of web applications.