UDP

Q: How deeply does Rust in Action: Systems programming concepts and techniques cover UDP?

Demonstrates UDP through DNS message construction and exchange, but treats only a small portion of the DNS protocol.

As explained in Rust in Action: Systems programming concepts and techniques

UDP is a connectionless transport protocol that sends independent datagrams without guaranteeing delivery, ordering, or duplication control.

UDP is a connectionless transport protocol that sends independent datagrams without guaranteeing delivery, ordering, or duplication control. Two-way communication requires each side to act as both client and server. section 8.11

DNS provides a practical UDP use case: a resolver sends a query to a DNS server, which returns an answer containing the requested IP address. DNS can also use TCP and TLS, but UDP is used for DNS requests. section 8.4.2

A small Rust resolver demonstrates the surrounding workflow:

Resolve the hostname into a domain-name representation, construct a DNS query, and request an IPv4 address. section 8.4.2
Use Rust's UdpSocket together with trust-dns to exchange and interpret the message. section 8.4.2

Resolve a hostname

Running `cargo run -q -- www.rustinaction.com` produces an IPv4 address such as `35.185.44.232`; the `-s` option selects another DNS server.

How Rust in Action: Systems programming concepts and techniques covers it

Cover of Rust in Action: Systems programming concepts and techniques

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Also explained in

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Acing the CCNA Exam: Volume 1 Fundamentals and ProtocolsUser Datagram Protocol is a transport-layer protocol that sends datagrams without guaranteeing delivery of every message.
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Go in Practice, Second EditionUDP is a connectionless transport-layer protocol that sends datagrams without guaranteeing delivery or ordering.
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Acing the CCNA Exam: Volume 2 Advanced Networking and SecurityUDP is a connectionless transport-layer protocol that sends datagrams without providing TCP's reliability or ordering guarantees.
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Fast Python: High performance techniques for large datasets

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Related concepts

domain name systemused by · The Domain Name System is a distributed, hierarchical naming system that resolves domain names to IP addresses and other network resource records.
QUICused by · QUIC is a secure, multiplexed transport protocol built over UDP that provides reliable, low-latency communication.
Trivial File Transfer Protocolused by · Trivial File Transfer Protocol is a lightweight UDP-based file-transfer protocol that provides basic acknowledgment-based reliability without authentication or encryption.
TCPcontrasts with · TCP is a connection-oriented transport-layer protocol that provides reliable, ordered delivery of byte streams between network endpoints.
transport layerused by · The transport layer is the network-stack layer that provides end-to-end data delivery between communicating endpoints or application processes.
TCP/IP protocol suitepart of · The TCP/IP protocol suite is a layered family of networking protocols that enables addressing, routing, transport, and communication across interconnected networks.

This explainer was generated by Manning's knowledge graph from the text of Rust in Action: Systems programming concepts and techniques. The section links point to the parts of the book it draws on.