User Agent Parsing

Package claude provides a Go SDK for automating Claude Code CLI with concurrent session management, real-time streaming, custom tools, and hooks. This is the Go equivalent of the Python Claude Agent SDK. This library enables Go applications to interact with Claude Code CLI programmatically, supporting both single queries and multi-turn conversations with proper session management, file operations, and concurrent execution. For one-shot queries without session management: Define custom tools that run directly in your Go application: Intercept and control tool execution with hooks: Claude Code's --output-format stream-json produces JSONL where assistant and user messages wrap content in a nested "message" key: ParseMessage handles both this nested format and flat content automatically. The SDK provides typed messages for parsing CLI JSON output: The AgentOptions struct provides extensive configuration matching the Python SDK's ClaudeAgentOptions: The SDK provides typed errors for precise error handling: Error types include: The SDK automatically finds the Claude CLI in this order: The library is designed to be thread-safe: The library uses Claude CLI's existing authentication. Ensure Claude CLI is properly authenticated before using this library: Or set environment variables:

Package peer provides a common base for creating and managing Decred network peers. This package builds upon the wire package, which provides the fundamental primitives necessary to speak the Decred wire protocol, in order to simplify the process of creating fully functional peers. In essence, it provides a common base for creating concurrent safe fully validating nodes, Simplified Payment Verification (SPV) nodes, proxies, etc. A quick overview of the major features peer provides are as follows: All peer configuration is handled with the Config struct. This allows the caller to specify things such as the user agent name and version, the decred network to use, which services it supports, and callbacks to invoke when decred messages are received. See the documentation for each field of the Config struct for more details. A peer can either be inbound or outbound. The caller is responsible for establishing the connection to remote peers and listening for incoming peers. This provides high flexibility for things such as connecting via proxies, acting as a proxy, creating bridge peers, choosing whether to listen for inbound peers, etc. NewOutboundPeer and NewInboundPeer functions must be followed by calling Connect with a net.Conn instance to the peer. This will start all async I/O goroutines and initiate the protocol negotiation process. Once finished with the peer call Disconnect to disconnect from the peer and clean up all resources. WaitForDisconnect can be used to block until peer disconnection and resource cleanup has completed. In order to do anything useful with a peer, it is necessary to react to decred messages. This is accomplished by creating an instance of the MessageListeners struct with the callbacks to be invoke specified and setting the Listeners field of the Config struct specified when creating a peer to it. For convenience, a callback hook for all of the currently supported decred messages is exposed which receives the peer instance and the concrete message type. In addition, a hook for OnRead is provided so even custom messages types for which this package does not directly provide a hook, as long as they implement the wire.Message interface, can be used. Finally, the OnWrite hook is provided, which in conjunction with OnRead, can be used to track server-wide byte counts. It is often useful to use closures which encapsulate state when specifying the callback handlers. This provides a clean method for accessing that state when callbacks are invoked. The QueueMessage function provides the fundamental means to send messages to the remote peer. As the name implies, this employs a non-blocking queue. A done channel which will be notified when the message is actually sent can optionally be specified. There are certain message types which are better sent using other functions which provide additional functionality. Of special interest are inventory messages. Rather than manually sending MsgInv messages via Queuemessage, the inventory vectors should be queued using the QueueInventory function. It employs batching and trickling along with intelligent known remote peer inventory detection and avoidance through the use of a most-recently used algorithm. In addition to the bare QueueMessage function previously described, the PushAddrMsg, PushGetBlocksMsg, and PushGetHeadersMsg functions are provided as a convenience. While it is of course possible to create and send these messages manually via QueueMessage, these helper functions provided additional useful functionality that is typically desired. For example, the PushAddrMsg function automatically limits the addresses to the maximum number allowed by the message and randomizes the chosen addresses when there are too many. This allows the caller to simply provide a slice of known addresses, such as that returned by the addrmgr package, without having to worry about the details. Finally, the PushGetBlocksMsg and PushGetHeadersMsg functions will construct proper messages using a block locator and ignore back to back duplicate requests. A snapshot of the current peer statistics can be obtained with the StatsSnapshot function. This includes statistics such as the total number of bytes read and written, the remote address, user agent, and negotiated protocol version. This package provides extensive logging capabilities through the UseLogger function which allows a slog.Logger to be specified. For example, logging at the debug level provides summaries of every message sent and received, and logging at the trace level provides full dumps of parsed messages as well as the raw message bytes using a format similar to hexdump -C. This package supports all improvement proposals supported by the wire package. This example demonstrates the basic process for initializing and creating an outbound peer. Peers negotiate by exchanging version and verack messages. For demonstration, a simple handler for version message is attached to the peer.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package peer provides a common base for creating and managing Decred network peers. This package builds upon the wire package, which provides the fundamental primitives necessary to speak the Decred wire protocol, in order to simplify the process of creating fully functional peers. In essence, it provides a common base for creating concurrent safe fully validating nodes, Simplified Payment Verification (SPV) nodes, proxies, etc. A quick overview of the major features peer provides are as follows: All peer configuration is handled with the Config struct. This allows the caller to specify things such as the user agent name and version, the decred network to use, which services it supports, and callbacks to invoke when decred messages are received. See the documentation for each field of the Config struct for more details. A peer can either be inbound or outbound. The caller is responsible for establishing the connection to remote peers and listening for incoming peers. This provides high flexibility for things such as connecting via proxies, acting as a proxy, creating bridge peers, choosing whether to listen for inbound peers, etc. NewOutboundPeer and NewInboundPeer functions must be followed by calling Connect with a net.Conn instance to the peer. This will start all async I/O goroutines and initiate the protocol negotiation process. Once finished with the peer call Disconnect to disconnect from the peer and clean up all resources. WaitForDisconnect can be used to block until peer disconnection and resource cleanup has completed. In order to do anything useful with a peer, it is necessary to react to decred messages. This is accomplished by creating an instance of the MessageListeners struct with the callbacks to be invoke specified and setting the Listeners field of the Config struct specified when creating a peer to it. For convenience, a callback hook for all of the currently supported decred messages is exposed which receives the peer instance and the concrete message type. In addition, a hook for OnRead is provided so even custom messages types for which this package does not directly provide a hook, as long as they implement the wire.Message interface, can be used. Finally, the OnWrite hook is provided, which in conjunction with OnRead, can be used to track server-wide byte counts. It is often useful to use closures which encapsulate state when specifying the callback handlers. This provides a clean method for accessing that state when callbacks are invoked. The QueueMessage function provides the fundamental means to send messages to the remote peer. As the name implies, this employs a non-blocking queue. A done channel which will be notified when the message is actually sent can optionally be specified. There are certain message types which are better sent using other functions which provide additional functionality. Of special interest are inventory messages. Rather than manually sending MsgInv messages via Queuemessage, the inventory vectors should be queued using the QueueInventory function. It employs batching and trickling along with intelligent known remote peer inventory detection and avoidance through the use of a most-recently used algorithm. In addition to the bare QueueMessage function previously described, the PushAddrMsg, PushGetBlocksMsg, PushGetHeadersMsg, and PushRejectMsg functions are provided as a convenience. While it is of course possible to create and send these message manually via QueueMessage, these helper functions provided additional useful functionality that is typically desired. For example, the PushAddrMsg function automatically limits the addresses to the maximum number allowed by the message and randomizes the chosen addresses when there are too many. This allows the caller to simply provide a slice of known addresses, such as that returned by the addrmgr package, without having to worry about the details. Next, the PushGetBlocksMsg and PushGetHeadersMsg functions will construct proper messages using a block locator and ignore back to back duplicate requests. Finally, the PushRejectMsg function can be used to easily create and send an appropriate reject message based on the provided parameters as well as optionally provides a flag to cause it to block until the message is actually sent. A snapshot of the current peer statistics can be obtained with the StatsSnapshot function. This includes statistics such as the total number of bytes read and written, the remote address, user agent, and negotiated protocol version. This package provides extensive logging capabilities through the UseLogger function which allows a slog.Logger to be specified. For example, logging at the debug level provides summaries of every message sent and received, and logging at the trace level provides full dumps of parsed messages as well as the raw message bytes using a format similar to hexdump -C. This package supports all improvement proposals supported by the wire package. (https://godoc.org/github.com/decred/dcrd/wire#hdr-Bitcoin_Improvement_Proposals) This example demonstrates the basic process for initializing and creating an outbound peer. Peers negotiate by exchanging version and verack messages. For demonstration, a simple handler for version message is attached to the peer.

Package peer provides a common base for creating and managing Decred network peers. This package builds upon the wire package, which provides the fundamental primitives necessary to speak the Decred wire protocol, in order to simplify the process of creating fully functional peers. In essence, it provides a common base for creating concurrent safe fully validating nodes, Simplified Payment Verification (SPV) nodes, proxies, etc. A quick overview of the major features peer provides are as follows: All peer configuration is handled with the Config struct. This allows the caller to specify things such as the user agent name and version, the decred network to use, which services it supports, and callbacks to invoke when decred messages are received. See the documentation for each field of the Config struct for more details. A peer can either be inbound or outbound. The caller is responsible for establishing the connection to remote peers and listening for incoming peers. This provides high flexibility for things such as connecting via proxies, acting as a proxy, creating bridge peers, choosing whether to listen for inbound peers, etc. NewOutboundPeer and NewInboundPeer functions must be followed by calling Connect with a net.Conn instance to the peer. This will start all async I/O goroutines and initiate the protocol negotiation process. Once finished with the peer call Disconnect to disconnect from the peer and clean up all resources. WaitForDisconnect can be used to block until peer disconnection and resource cleanup has completed. In order to do anything useful with a peer, it is necessary to react to decred messages. This is accomplished by creating an instance of the MessageListeners struct with the callbacks to be invoke specified and setting the Listeners field of the Config struct specified when creating a peer to it. For convenience, a callback hook for all of the currently supported decred messages is exposed which receives the peer instance and the concrete message type. In addition, a hook for OnRead is provided so even custom messages types for which this package does not directly provide a hook, as long as they implement the wire.Message interface, can be used. Finally, the OnWrite hook is provided, which in conjunction with OnRead, can be used to track server-wide byte counts. It is often useful to use closures which encapsulate state when specifying the callback handlers. This provides a clean method for accessing that state when callbacks are invoked. The QueueMessage function provides the fundamental means to send messages to the remote peer. As the name implies, this employs a non-blocking queue. A done channel which will be notified when the message is actually sent can optionally be specified. There are certain message types which are better sent using other functions which provide additional functionality. Of special interest are inventory messages. Rather than manually sending MsgInv messages via Queuemessage, the inventory vectors should be queued using the QueueInventory function. It employs batching and trickling along with intelligent known remote peer inventory detection and avoidance through the use of a most-recently used algorithm. In addition to the bare QueueMessage function previously described, the PushAddrMsg, PushGetBlocksMsg, and PushGetHeadersMsg functions are provided as a convenience. While it is of course possible to create and send these messages manually via QueueMessage, these helper functions provided additional useful functionality that is typically desired. For example, the PushAddrMsg function automatically limits the addresses to the maximum number allowed by the message and randomizes the chosen addresses when there are too many. This allows the caller to simply provide a slice of known addresses, such as that returned by the addrmgr package, without having to worry about the details. Finally, the PushGetBlocksMsg and PushGetHeadersMsg functions will construct proper messages using a block locator and ignore back to back duplicate requests. A snapshot of the current peer statistics can be obtained with the StatsSnapshot function. This includes statistics such as the total number of bytes read and written, the remote address, user agent, and negotiated protocol version. This package provides extensive logging capabilities through the UseLogger function which allows a slog.Logger to be specified. For example, logging at the debug level provides summaries of every message sent and received, and logging at the trace level provides full dumps of parsed messages as well as the raw message bytes using a format similar to hexdump -C. This package supports all improvement proposals supported by the wire package. This example demonstrates the basic process for initializing and creating an outbound peer. Peers negotiate by exchanging version and verack messages. For demonstration, a simple handler for version message is attached to the peer.

Package peer provides a common base for creating and managing Decred network peers. This package builds upon the wire package, which provides the fundamental primitives necessary to speak the Decred wire protocol, in order to simplify the process of creating fully functional peers. In essence, it provides a common base for creating concurrent safe fully validating nodes, Simplified Payment Verification (SPV) nodes, proxies, etc. A quick overview of the major features peer provides are as follows: All peer configuration is handled with the Config struct. This allows the caller to specify things such as the user agent name and version, the decred network to use, which services it supports, and callbacks to invoke when decred messages are received. See the documentation for each field of the Config struct for more details. A peer can either be inbound or outbound. The caller is responsible for establishing the connection to remote peers and listening for incoming peers. This provides high flexibility for things such as connecting via proxies, acting as a proxy, creating bridge peers, choosing whether to listen for inbound peers, etc. NewOutboundPeer and NewInboundPeer functions must be followed by calling Connect with a net.Conn instance to the peer. This will start all async I/O goroutines and initiate the protocol negotiation process. Once finished with the peer call Disconnect to disconnect from the peer and clean up all resources. WaitForDisconnect can be used to block until peer disconnection and resource cleanup has completed. In order to do anything useful with a peer, it is necessary to react to decred messages. This is accomplished by creating an instance of the MessageListeners struct with the callbacks to be invoke specified and setting the Listeners field of the Config struct specified when creating a peer to it. For convenience, a callback hook for all of the currently supported decred messages is exposed which receives the peer instance and the concrete message type. In addition, a hook for OnRead is provided so even custom messages types for which this package does not directly provide a hook, as long as they implement the wire.Message interface, can be used. Finally, the OnWrite hook is provided, which in conjunction with OnRead, can be used to track server-wide byte counts. It is often useful to use closures which encapsulate state when specifying the callback handlers. This provides a clean method for accessing that state when callbacks are invoked. The QueueMessage function provides the fundamental means to send messages to the remote peer. As the name implies, this employs a non-blocking queue. A done channel which will be notified when the message is actually sent can optionally be specified. There are certain message types which are better sent using other functions which provide additional functionality. Of special interest are inventory messages. Rather than manually sending MsgInv messages via Queuemessage, the inventory vectors should be queued using the QueueInventory function. It employs batching and trickling along with intelligent known remote peer inventory detection and avoidance through the use of a most-recently used algorithm. In addition to the bare QueueMessage function previously described, the PushAddrMsg, PushGetBlocksMsg, PushGetHeadersMsg, and PushRejectMsg functions are provided as a convenience. While it is of course possible to create and send these message manually via QueueMessage, these helper functions provided additional useful functionality that is typically desired. For example, the PushAddrMsg function automatically limits the addresses to the maximum number allowed by the message and randomizes the chosen addresses when there are too many. This allows the caller to simply provide a slice of known addresses, such as that returned by the addrmgr package, without having to worry about the details. Next, the PushGetBlocksMsg and PushGetHeadersMsg functions will construct proper messages using a block locator and ignore back to back duplicate requests. Finally, the PushRejectMsg function can be used to easily create and send an appropriate reject message based on the provided parameters as well as optionally provides a flag to cause it to block until the message is actually sent. A snapshot of the current peer statistics can be obtained with the StatsSnapshot function. This includes statistics such as the total number of bytes read and written, the remote address, user agent, and negotiated protocol version. This package provides extensive logging capabilities through the UseLogger function which allows a slog.Logger to be specified. For example, logging at the debug level provides summaries of every message sent and received, and logging at the trace level provides full dumps of parsed messages as well as the raw message bytes using a format similar to hexdump -C. This package supports all improvement proposals supported by the wire package. This example demonstrates the basic process for initializing and creating an outbound peer. Peers negotiate by exchanging version and verack messages. For demonstration, a simple handler for version message is attached to the peer.

Package useragent parses a user agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package useragent parses a user agent string.

Package foxhound is a high-performance Go web scraping framework with native anti-detection built on Camoufox, a Firefox fork designed to evade bot fingerprinting. Foxhound is a scraping framework for Go — it handles the full lifecycle of web data extraction: fetching pages (with or without a real browser), navigating JavaScript-heavy sites, solving CAPTCHAs, rotating identities and proxies, extracting structured data, and exporting results. Think of it as Scrapy for Go, but with first-class browser automation and anti-detection built in from day one. Modern websites deploy increasingly sophisticated bot detection: TLS fingerprinting, JavaScript challenges (Cloudflare, DataDome, PerimeterX), canvas/WebGL fingerprint checks, and behavioral analysis. Traditional HTTP-only scrapers fail silently against these defenses. Headless Chrome is widely fingerprinted. Foxhound solves this by combining two fetching strategies behind a single API: The smart router starts with the fast static client and automatically escalates to the full browser when it detects blocks (403, 429, 503, CAPTCHA pages). This means you get HTTP-client speed on easy targets and browser-level evasion on hard ones, without changing your code. Foxhound is organized around five core concepts: Hunt is the top-level campaign orchestrator. It owns the queue, spawns Walker goroutines, collects stats, and coordinates shutdown. You configure a Hunt with seed URLs, a Processor (your extraction logic), middleware, pipelines, and writers. Trail is a fluent navigation path builder. It chains browser actions — Navigate, Click, Fill, Wait, Scroll, InfiniteScroll, Evaluate (custom JS), and CaptureXHR — into a reusable sequence that gets compiled into Jobs. Trails describe what a human would do on the page. Walker is a goroutine that acts as a virtual user. Each Walker pops Jobs from the queue, fetches pages through the middleware chain, runs your Processor, writes extracted Items through the pipeline, and enqueues discovered follow-up Jobs. A Hunt runs multiple Walkers concurrently. Job is the unit of work: a URL plus fetch mode, priority, browser steps, metadata, and optional session routing. Jobs flow through the queue and are consumed by Walkers. Session is a stateful client that wraps a fetcher, cookie jar, identity profile, and proxy into a reusable unit. Use it standalone for ad-hoc scraping, or register multiple Sessions with a Hunt via Hunt.AddSession to route different Jobs through different identities and proxies. Every request flows through a middleware chain before reaching the fetcher: The static fetcher (fetch.NewStealth) uses Go's HTTP client with precise header ordering and TLS fingerprints matched to the identity profile. The browser fetcher (fetch.NewCamoufox) launches a real Camoufox browser instance via the Juggler protocol (Firefox's native remote protocol, less targeted by anti-bot than CDP). The smart fetcher (fetch.NewSmart) wraps both and auto-escalates based on response signals and Bayesian domain risk scoring. Every request uses a complete, internally consistent identity profile: user agent, TLS fingerprint, header order, OS, hardware specs, screen dimensions, locale, timezone, and geolocation all match. Randomness without consistency is the number one cause of bot detection — a Windows UA with a macOS font list, or a US locale with a Tokyo timezone, triggers instant blocks. Foxhound ships 60 embedded device profiles. The identity package generates profiles with functional options: When using Camoufox, the identity is serialized to a JSON config that sets navigator properties, WebGL vendor/renderer, canvas noise, OS-specific fonts, screen dimensions, and timezone at the C++ level inside the browser — not via JavaScript injection that anti-bot scripts can detect. Foxhound models human behavior using statistical distributions observed from real user sessions: Three built-in profiles ("careful", "moderate", "aggressive") control the overall pacing. Configure via BehaviorConfig or Hunt options. The NopeCHA browser extension is automatically downloaded from GitHub and loaded into Camoufox on first launch. It solves reCAPTCHA, hCAPTCHA, and Cloudflare Turnstile challenges without API keys. The extension is cached at ~/.cache/foxhound/extensions/nopecha/ and updated automatically. The design philosophy: the goal is to never trigger a CAPTCHA. If one appears, earlier layers (identity, timing, proxy rotation) failed. NopeCHA is the safety net, not the primary strategy. Disable with extension_path: "none" in config or WithExtensionPath("none"). Foxhound provides 13 middleware layers that wrap the fetcher: Middleware is composable: each layer wraps a Fetcher and returns a Fetcher, so you can stack them in any order or add custom middleware. Websites frequently change their DOM structure — class names rotate, IDs are randomized, layouts shift. Foxhound's adaptive selector system survives these rewrites by building element signatures (tag, position, text patterns, ancestor structure) alongside CSS selectors. When a selector stops matching, the system falls back to similarity matching against saved signatures. Enable with Hunt.WithAdaptive and use via Response.Adaptive, Response.CSSAdaptive, Response.CSSAdaptiveAll, or Trail.Adaptive. Signatures can be stored in JSON files or SQLite. A Hunt is the standard way to scrape at scale. Define a Processor, configure middleware and writers, add seed URLs, and run: Trails describe multi-step browser interactions for JS-heavy pages. This example searches Google Maps and scrolls through results: Session is the lightweight alternative to Hunt for quick, stateful fetches. Cookies persist across calls, and the identity stays consistent: Response provides built-in CSS and XPath querying without importing the parse package: Response.Follow extracts links from the page and generates follow-up Jobs: Capture background API calls that JavaScript makes after page load. This is essential for SPAs where data loads via XHR/fetch, not in the initial HTML: The captured responses are available in Response.CapturedXHR as a slice of maps with keys: request_url, request_method, status, headers, body. For sites behind Cloudflare's JavaScript challenge, Foxhound can detect and wait for the challenge to complete: Route different jobs through different identities and proxies within a single Hunt: Cache responses on disk for zero-network iteration during development: The foxhound module is organized into focused sub-packages: [engine] — Hunt, Trail, Walker, scheduler, retry logic, stats collection, and ItemList for thread-safe item accumulation with CSV/JSON/JSONL export. [fetch] — Stealth HTTP client (TLS fingerprinting + header ordering), Camoufox browser automation (Juggler protocol), Smart router (auto-escalation), XHR capture, page pool management, domain risk scoring, and SOCKS5 auth relay. [identity] — Profile generation with 60 embedded device profiles. Produces consistent identity bundles (UA, TLS, headers, OS, hardware, screen, locale, geo) and Camoufox fingerprint configs. [behavior] — Human behavior simulation: timing (Weibull/Gamma distributions), mouse (Bezier curves), scroll patterns, keyboard input, navigation profiles, and session fatigue modeling. [middleware] — 13 composable middleware layers: rate limiting, dedup, retry, autothrottle, cookies, referer, redirect, depth, delta-fetch, circuit breaker, metrics, blocked detection, and robots.txt. [parse] — Content extraction: CSS (goquery), JSON (dot-path), XPath (subset), regex, structured schema, Markdown/text conversion, metadata (JSON-LD, OpenGraph, NextData, NuxtData), contact deobfuscation, sitemap/feed parsing, adaptive selectors, HTML table extraction, JS preload detection, directory listings, pagination detection, and auto-detection with Readability-style scoring. [pipeline] — Item processing stages: validation, cleaning, deduplication, field transformation (regex, rename, type coercion), and chain composition. pipeline/export — Output writers: JSON, JSONL, CSV, XML, SQLite, PostgreSQL, Markdown, Text, and Webhook. [proxy] — Proxy pool management with geo-aware selection, health checking, cooldown tracking, and provider adapters (BrightData, Oxylabs, Smartproxy). [queue] — Job queue implementations: in-memory (heap-based priority queue), Redis (sorted sets), and SQLite (persistent). [cache] — Response caching: in-memory (LRU + TTL), file-based (SHA256 keys), Redis, and SQLite. [captcha] — CAPTCHA detection (Cloudflare, reCAPTCHA, hCAPTCHA, GeeTest) and solving via NopeCHA, CapSolver, 2Captcha, and Turnstile. [monitor] — Observability: atomic stat counters, Prometheus metrics (isolated registry), and webhook-based alerting rules. cmd/foxhound — CLI tool: init, run, check, proxy-test, shell, browser-shell, resume, curl2fox, and preview commands.

Package geolocation provides framework-agnostic geolocation extraction from Cloudflare headers and user agent parsing for browser, OS, device, and language information.

Package geolocation provides framework-agnostic geolocation extraction from Cloudflare headers and user agent parsing for browser, OS, device, and language information.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package peer provides a common base for creating and managing Bitcoin network peers. This package builds upon the wire package, which provides the fundamental primitives necessary to speak the bitcoin wire protocol, in order to simplify the process of creating fully functional peers. In essence, it provides a common base for creating concurrent safe fully validating nodes, Simplified Payment Verification (SPV) nodes, proxies, etc. A quick overview of the major features peer provides are as follows: Provides a basic concurrent safe bitcoin peer for handling bitcoin communications via the peer-to-peer protocol Full duplex reading and writing of bitcoin protocol messages Automatic handling of the initial handshake process including protocol version negotiation Asynchronous message queuing of outbound messages with optional channel for notification when the message is actually sent Flexible peer configuration Caller is responsible for creating outgoing connections and listening for incoming connections so they have flexibility to establish connections asthey see fit (proxies, etc) User agent name and version Bitcoin network Service support signalling (full nodes, bloom filters, etc) Maximum supported protocol version Ability to register callbacks for handling bitcoin protocol messages Inventory message batching and send trickling with known inventory detection and avoidance Automatic periodic keep-alive pinging and pong responses Random Nonce generation and self connection detection Proper handling of bloom filter related commands when the caller does not specify the related flag to signal support Disconnects the peer when the protocol version is high enough Does not invoke the related callbacks for older protocol versions Snapshottable peer statistics such as the total number of bytes read and written, the remote address, user agent, and negotiated protocol version Helper functions pushing addresses, getblocks, getheaders, and reject messages These could all be sent manually via the standard message output function, but the helpers provide additional nice functionality such as duplicate filtering and address randomization Ability to wait for shutdown/disconnect Comprehensive test coverage All peer configuration is handled with the Config struct. This allows the caller to specify things such as the user agent name and version, the bitcoin network to use, which services it supports, and callbacks to invoke when bitcoin messages are received. See the documentation for each field of the Config struct for more details. A peer can either be inbound or outbound. The caller is responsible for establishing the connection to remote peers and listening for incoming peers. This provides high flexibility for things such as connecting via proxies, acting as a proxy, creating bridge peers, choosing whether to listen for inbound peers, etc. NewOutboundPeer and NewInboundPeer functions must be followed by calling Connect with a net.Conn instance to the peer. This will start all async I/O goroutines and initiate the protocol negotiation process. Once finished with the peer call Disconnect to disconnect from the peer and clean up all resources. WaitForDisconnect can be used to block until peer disconnection and resource cleanup has completed. In order to do anything useful with a peer, it is necessary to react to bitcoin messages. This is accomplished by creating an instance of the MessageListeners struct with the callbacks to be invoke specified and setting the Listeners field of the Config struct specified when creating a peer to it. For convenience, a callback hook for all of the currently supported bitcoin messages is exposed which receives the peer instance and the concrete message type. In addition, a hook for OnRead is provided so even custom messages types for which this package does not directly provide a hook, as long as they implement the wire.Message interface, can be used. Finally, the OnWrite hook is provided, which in conjunction with OnRead, can be used to track server-wide byte counts. It is often useful to use closures which encapsulate state when specifying the callback handlers. This provides a clean method for accessing that state when callbacks are invoked. The QueueMessage function provides the fundamental means to send messages to the remote peer. As the name implies, this employs a non-blocking queue. A done channel which will be notified when the message is actually sent can optionally be specified. There are certain message types which are better sent using other functions which provide additional functionality. Of special interest are inventory messages. Rather than manually sending MsgInv messages via Queuemessage, the inventory vectors should be queued using the QueueInventory function. It employs batching and trickling along with intelligent known remote peer inventory detection and avoidance through the use of a most-recently used algorithm. In addition to the bare QueueMessage function previously described, the PushAddrMsg, PushGetBlocksMsg, PushGetHeadersMsg, and PushRejectMsg functions are provided as a convenience. While it is of course possible to create and send these message manually via QueueMessage, these helper functions provided additional useful functionality that is typically desired. For example, the PushAddrMsg function automatically limits the addresses to the maximum number allowed by the message and randomizes the chosen addresses when there are too many. This allows the caller to simply provide a slice of known addresses, such as that returned by the addrmgr package, without having to worry about the details. Next, the PushGetBlocksMsg and PushGetHeadersMsg functions will construct proper messages using a block locator and ignore back to back duplicate requests. Finally, the PushRejectMsg function can be used to easily create and send an appropriate reject message based on the provided parameters as well as optionally provides a flag to cause it to block until the message is actually sent. A snapshot of the current peer statistics can be obtained with the StatsSnapshot function. This includes statistics such as the total number of bytes read and written, the remote address, user agent, and negotiated protocol version. This package provides extensive logging capabilities through the UseLogger function which allows a btclog.Logger to be specified. For example, logging at the debug level provides summaries of every message sent and received, and logging at the trace level provides full dumps of parsed messages as well as the raw message bytes using a format similar to hexdump -C. This package supports all BIPS supported by the wire package. (https://godoc.org/github.com/p9c/pod/wire#hdr-Bitcoin_Improvement_Proposals) This example demonstrates the basic process for initializing and creating an outbound peer. Peers negotiate by exchanging version and verack messages. For demonstration, a simple handler for version message is attached to the peer.

Package robots implements robots.txt parsing and matching based on Google's specification. For a robots.txt primer, please read the full specification at: https://developers.google.com/search/reference/robots_txt. Clients of this package have one obligation: when testing whether a URL can be crawled, use the correct robots.txt file. The specification uses scheme, port, and punycode variations to define which URLs are in scope. To get the right robots.txt file, use Locate. Locate takes as its only argument the URL you want to access. It returns the URL of the robots.txt file that governs access. Locate will always return a single unique robots.txt URL for all input URLs sharing a scope. In practice, a client pattern for testing whether a URL is accessible would be: a) Locate the robots.txt file for the URL; b) check whether you have fetched data for that robots.txt file; c) if yes, use the data to Test the URL against your user agent; d) if no, fetch the robots.txt data and try again. For details, see "File location & range of validity" in the specification: https://developers.google.com/search/reference/robots_txt#file-location--range-of-validity. A generous parser is specified. A valid line is accepted, and an invalid line is silently discarded. This is true even if the content parsed is in an unexpected format, like HTML. For details, see "File format" in the specification: https://developers.google.com/search/reference/robots_txt#file-format The specification states that a crawler will assume all URLs are accessible, even if there is no robots.txt file, or the body of the robots.txt file is empty. So a robots.txt file with a 404 status code will result in all URLs being crawlable. The exception to this is a 5xx status code. This is treated as a temporary "full disallow" of crawling. For details, see "Handling HTTP result codes" in the specification: https://developers.google.com/search/reference/robots_txt#handling-http-result-codes

Package useragent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package uas provides a go implementation of the http://user-agent-string.info/ processor. Standard usage is to provide a user-agent string to the Parse method of a Manifest instance and retrieve an Agent instance in return. From the Agent, you can obtain: browser details, operating system details, and device details. You must create a Manifest instance by providing an XML file from the UAS.info site (http://user-agent-string.info/rpc/get_data.php?key=free&format=xml&download=y) to the LoadFile function; or you can provide a Reader of similar ilk to the Load function. This package currently doesn't support downloading Manifests automatically, but you can also easily create new instances of different Manifests; i.e. a Manifest is not a global object. This package also does not yet support the .ini format; mostly this was to make processing easier by using the built-in XML unmarshalling capabilities of Go. Given a Manifest, you can now easily parse an Agent like so: You can check out the model structure to figure out what other values are available. Unlike other implementations, the values are not simply returned as a flat map. Currently, robots are treated differently in that any agent recognized as one is returned from Parse as a nil value. You can check to see if the agent is indeed a robot by asking if it's so: In all cases, when an Agent is found it will be cached in a Manifest-specific LRU that can hold 5000 entries. This is not configurable at the moment.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package peer provides a common base for creating and managing Decred network peers. This package builds upon the wire package, which provides the fundamental primitives necessary to speak the Decred wire protocol, in order to simplify the process of creating fully functional peers. In essence, it provides a common base for creating concurrent safe fully validating nodes, Simplified Payment Verification (SPV) nodes, proxies, etc. A quick overview of the major features peer provides are as follows: All peer configuration is handled with the Config struct. This allows the caller to specify things such as the user agent name and version, the decred network to use, which services it supports, and callbacks to invoke when decred messages are received. See the documentation for each field of the Config struct for more details. A peer can either be inbound or outbound. The caller is responsible for establishing the connection to remote peers and listening for incoming peers. This provides high flexibility for things such as connecting via proxies, acting as a proxy, creating bridge peers, choosing whether to listen for inbound peers, etc. NewOutboundPeer and NewInboundPeer functions must be followed by calling Connect with a net.Conn instance to the peer. This will start all async I/O goroutines and initiate the protocol negotiation process. Once finished with the peer call Disconnect to disconnect from the peer and clean up all resources. WaitForDisconnect can be used to block until peer disconnection and resource cleanup has completed. In order to do anything useful with a peer, it is necessary to react to decred messages. This is accomplished by creating an instance of the MessageListeners struct with the callbacks to be invoke specified and setting the Listeners field of the Config struct specified when creating a peer to it. For convenience, a callback hook for all of the currently supported decred messages is exposed which receives the peer instance and the concrete message type. In addition, a hook for OnRead is provided so even custom messages types for which this package does not directly provide a hook, as long as they implement the wire.Message interface, can be used. Finally, the OnWrite hook is provided, which in conjunction with OnRead, can be used to track server-wide byte counts. It is often useful to use closures which encapsulate state when specifying the callback handlers. This provides a clean method for accessing that state when callbacks are invoked. The QueueMessage function provides the fundamental means to send messages to the remote peer. As the name implies, this employs a non-blocking queue. A done channel which will be notified when the message is actually sent can optionally be specified. There are certain message types which are better sent using other functions which provide additional functionality. Of special interest are inventory messages. Rather than manually sending MsgInv messages via Queuemessage, the inventory vectors should be queued using the QueueInventory function. It employs batching and trickling along with intelligent known remote peer inventory detection and avoidance through the use of a most-recently used algorithm. In addition to the bare QueueMessage function previously described, the PushAddrMsg, PushGetBlocksMsg, PushGetHeadersMsg, and PushRejectMsg functions are provided as a convenience. While it is of course possible to create and send these message manually via QueueMessage, these helper functions provided additional useful functionality that is typically desired. For example, the PushAddrMsg function automatically limits the addresses to the maximum number allowed by the message and randomizes the chosen addresses when there are too many. This allows the caller to simply provide a slice of known addresses, such as that returned by the addrmgr package, without having to worry about the details. Next, the PushGetBlocksMsg and PushGetHeadersMsg functions will construct proper messages using a block locator and ignore back to back duplicate requests. Finally, the PushRejectMsg function can be used to easily create and send an appropriate reject message based on the provided parameters as well as optionally provides a flag to cause it to block until the message is actually sent. A snapshot of the current peer statistics can be obtained with the StatsSnapshot function. This includes statistics such as the total number of bytes read and written, the remote address, user agent, and negotiated protocol version. This package provides extensive logging capabilities through the UseLogger function which allows a slog.Logger to be specified. For example, logging at the debug level provides summaries of every message sent and received, and logging at the trace level provides full dumps of parsed messages as well as the raw message bytes using a format similar to hexdump -C. This package supports all improvement proposals supported by the wire package. (https://godoc.org/github.com/Decred-Next/dcrnd/wire#hdr-Bitcoin_Improvement_Proposals) This example demonstrates the basic process for initializing and creating an outbound peer. Peers negotiate by exchanging version and verack messages. For demonstration, a simple handler for version message is attached to the peer.

Package peer provides a common base for creating and managing Decred network peers. This package builds upon the wire package, which provides the fundamental primitives necessary to speak the Decred wire protocol, in order to simplify the process of creating fully functional peers. In essence, it provides a common base for creating concurrent safe fully validating nodes, Simplified Payment Verification (SPV) nodes, proxies, etc. A quick overview of the major features peer provides are as follows: All peer configuration is handled with the Config struct. This allows the caller to specify things such as the user agent name and version, the decred network to use, which services it supports, and callbacks to invoke when decred messages are received. See the documentation for each field of the Config struct for more details. A peer can either be inbound or outbound. The caller is responsible for establishing the connection to remote peers and listening for incoming peers. This provides high flexibility for things such as connecting via proxies, acting as a proxy, creating bridge peers, choosing whether to listen for inbound peers, etc. NewOutboundPeer and NewInboundPeer functions must be followed by calling Connect with a net.Conn instance to the peer. This will start all async I/O goroutines and initiate the protocol negotiation process. Once finished with the peer call Disconnect to disconnect from the peer and clean up all resources. WaitForDisconnect can be used to block until peer disconnection and resource cleanup has completed. In order to do anything useful with a peer, it is necessary to react to decred messages. This is accomplished by creating an instance of the MessageListeners struct with the callbacks to be invoke specified and setting the Listeners field of the Config struct specified when creating a peer to it. For convenience, a callback hook for all of the currently supported decred messages is exposed which receives the peer instance and the concrete message type. In addition, a hook for OnRead is provided so even custom messages types for which this package does not directly provide a hook, as long as they implement the wire.Message interface, can be used. Finally, the OnWrite hook is provided, which in conjunction with OnRead, can be used to track server-wide byte counts. It is often useful to use closures which encapsulate state when specifying the callback handlers. This provides a clean method for accessing that state when callbacks are invoked. The QueueMessage function provides the fundamental means to send messages to the remote peer. As the name implies, this employs a non-blocking queue. A done channel which will be notified when the message is actually sent can optionally be specified. There are certain message types which are better sent using other functions which provide additional functionality. Of special interest are inventory messages. Rather than manually sending MsgInv messages via Queuemessage, the inventory vectors should be queued using the QueueInventory function. It employs batching and trickling along with intelligent known remote peer inventory detection and avoidance through the use of a most-recently used algorithm. In addition to the bare QueueMessage function previously described, the PushAddrMsg, PushGetBlocksMsg, PushGetHeadersMsg, and PushRejectMsg functions are provided as a convenience. While it is of course possible to create and send these message manually via QueueMessage, these helper functions provided additional useful functionality that is typically desired. For example, the PushAddrMsg function automatically limits the addresses to the maximum number allowed by the message and randomizes the chosen addresses when there are too many. This allows the caller to simply provide a slice of known addresses, such as that returned by the addrmgr package, without having to worry about the details. Next, the PushGetBlocksMsg and PushGetHeadersMsg functions will construct proper messages using a block locator and ignore back to back duplicate requests. Finally, the PushRejectMsg function can be used to easily create and send an appropriate reject message based on the provided parameters as well as optionally provides a flag to cause it to block until the message is actually sent. A snapshot of the current peer statistics can be obtained with the StatsSnapshot function. This includes statistics such as the total number of bytes read and written, the remote address, user agent, and negotiated protocol version. This package provides extensive logging capabilities through the UseLogger function which allows a slog.Logger to be specified. For example, logging at the debug level provides summaries of every message sent and received, and logging at the trace level provides full dumps of parsed messages as well as the raw message bytes using a format similar to hexdump -C. This package supports all improvement proposals supported by the wire package. This example demonstrates the basic process for initializing and creating an outbound peer. Peers negotiate by exchanging version and verack messages. For demonstration, a simple handler for version message is attached to the peer.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package useragent parses a user agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package peer provides a common base for creating and managing Decred network peers. This package builds upon the wire package, which provides the fundamental primitives necessary to speak the Decred wire protocol, in order to simplify the process of creating fully functional peers. In essence, it provides a common base for creating concurrent safe fully validating nodes, Simplified Payment Verification (SPV) nodes, proxies, etc. A quick overview of the major features peer provides are as follows: All peer configuration is handled with the Config struct. This allows the caller to specify things such as the user agent name and version, the decred network to use, which services it supports, and callbacks to invoke when decred messages are received. See the documentation for each field of the Config struct for more details. A peer can either be inbound or outbound. The caller is responsible for establishing the connection to remote peers and listening for incoming peers. This provides high flexibility for things such as connecting via proxies, acting as a proxy, creating bridge peers, choosing whether to listen for inbound peers, etc. NewOutboundPeer and NewInboundPeer functions must be followed by calling Connect with a net.Conn instance to the peer. This will start all async I/O goroutines and initiate the protocol negotiation process. Once finished with the peer call Disconnect to disconnect from the peer and clean up all resources. WaitForDisconnect can be used to block until peer disconnection and resource cleanup has completed. In order to do anything useful with a peer, it is necessary to react to decred messages. This is accomplished by creating an instance of the MessageListeners struct with the callbacks to be invoke specified and setting the Listeners field of the Config struct specified when creating a peer to it. For convenience, a callback hook for all of the currently supported decred messages is exposed which receives the peer instance and the concrete message type. In addition, a hook for OnRead is provided so even custom messages types for which this package does not directly provide a hook, as long as they implement the wire.Message interface, can be used. Finally, the OnWrite hook is provided, which in conjunction with OnRead, can be used to track server-wide byte counts. It is often useful to use closures which encapsulate state when specifying the callback handlers. This provides a clean method for accessing that state when callbacks are invoked. The QueueMessage function provides the fundamental means to send messages to the remote peer. As the name implies, this employs a non-blocking queue. A done channel which will be notified when the message is actually sent can optionally be specified. There are certain message types which are better sent using other functions which provide additional functionality. Of special interest are inventory messages. Rather than manually sending MsgInv messages via Queuemessage, the inventory vectors should be queued using the QueueInventory function. It employs batching and trickling along with intelligent known remote peer inventory detection and avoidance through the use of a most-recently used algorithm. In addition to the bare QueueMessage function previously described, the PushAddrMsg, PushGetBlocksMsg, PushGetHeadersMsg, and PushRejectMsg functions are provided as a convenience. While it is of course possible to create and send these message manually via QueueMessage, these helper functions provided additional useful functionality that is typically desired. For example, the PushAddrMsg function automatically limits the addresses to the maximum number allowed by the message and randomizes the chosen addresses when there are too many. This allows the caller to simply provide a slice of known addresses, such as that returned by the addrmgr package, without having to worry about the details. Next, the PushGetBlocksMsg and PushGetHeadersMsg functions will construct proper messages using a block locator and ignore back to back duplicate requests. Finally, the PushRejectMsg function can be used to easily create and send an appropriate reject message based on the provided parameters as well as optionally provides a flag to cause it to block until the message is actually sent. A snapshot of the current peer statistics can be obtained with the StatsSnapshot function. This includes statistics such as the total number of bytes read and written, the remote address, user agent, and negotiated protocol version. This package provides extensive logging capabilities through the UseLogger function which allows a btclog.Logger to be specified. For example, logging at the debug level provides summaries of every message sent and received, and logging at the trace level provides full dumps of parsed messages as well as the raw message bytes using a format similar to hexdump -C. This package supports all improvement proposals supported by the wire package. (https://godoc.org/github.com/decred/dcrd/wire#hdr-Bitcoin_Improvement_Proposals) This example demonstrates the basic process for initializing and creating an outbound peer. Peers negotiate by exchanging version and verack messages. For demonstration, a simple handler for version message is attached to the peer.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package useragent parses a user agent string.

Package peer provides a common base for creating and managing MultiCash network peers. This package builds upon the wire package, which provides the fundamental primitives necessary to speak the MultiCash wire protocol, in order to simplify the process of creating fully functional peers. In essence, it provides a common base for creating concurrent safe fully validating nodes, Simplified Payment Verification (SPV) nodes, proxies, etc. A quick overview of the major features peer provides are as follows: All peer configuration is handled with the Config struct. This allows the caller to specify things such as the user agent name and version, the multicash network to use, which services it supports, and callbacks to invoke when multicash messages are received. See the documentation for each field of the Config struct for more details. A peer can either be inbound or outbound. The caller is responsible for establishing the connection to remote peers and listening for incoming peers. This provides high flexibility for things such as connecting via proxies, acting as a proxy, creating bridge peers, choosing whether to listen for inbound peers, etc. NewOutboundPeer and NewInboundPeer functions must be followed by calling Connect with a net.Conn instance to the peer. This will start all async I/O goroutines and initiate the protocol negotiation process. Once finished with the peer call Disconnect to disconnect from the peer and clean up all resources. WaitForDisconnect can be used to block until peer disconnection and resource cleanup has completed. In order to do anything useful with a peer, it is necessary to react to multicash messages. This is accomplished by creating an instance of the MessageListeners struct with the callbacks to be invoke specified and setting the Listeners field of the Config struct specified when creating a peer to it. For convenience, a callback hook for all of the currently supported multicash messages is exposed which receives the peer instance and the concrete message type. In addition, a hook for OnRead is provided so even custom messages types for which this package does not directly provide a hook, as long as they implement the wire.Message interface, can be used. Finally, the OnWrite hook is provided, which in conjunction with OnRead, can be used to track server-wide byte counts. It is often useful to use closures which encapsulate state when specifying the callback handlers. This provides a clean method for accessing that state when callbacks are invoked. The QueueMessage function provides the fundamental means to send messages to the remote peer. As the name implies, this employs a non-blocking queue. A done channel which will be notified when the message is actually sent can optionally be specified. There are certain message types which are better sent using other functions which provide additional functionality. Of special interest are inventory messages. Rather than manually sending MsgInv messages via Queuemessage, the inventory vectors should be queued using the QueueInventory function. It employs batching and trickling along with intelligent known remote peer inventory detection and avoidance through the use of a most-recently used algorithm. In addition to the bare QueueMessage function previously described, the PushAddrMsg, PushGetBlocksMsg, and PushGetHeadersMsg functions are provided as a convenience. While it is of course possible to create and send these messages manually via QueueMessage, these helper functions provided additional useful functionality that is typically desired. For example, the PushAddrMsg function automatically limits the addresses to the maximum number allowed by the message and randomizes the chosen addresses when there are too many. This allows the caller to simply provide a slice of known addresses, such as that returned by the addrmgr package, without having to worry about the details. Finally, the PushGetBlocksMsg and PushGetHeadersMsg functions will construct proper messages using a block locator and ignore back to back duplicate requests. A snapshot of the current peer statistics can be obtained with the StatsSnapshot function. This includes statistics such as the total number of bytes read and written, the remote address, user agent, and negotiated protocol version. This package provides extensive logging capabilities through the UseLogger function which allows a slog.Logger to be specified. For example, logging at the debug level provides summaries of every message sent and received, and logging at the trace level provides full dumps of parsed messages as well as the raw message bytes using a format similar to hexdump -C. This package supports all improvement proposals supported by the wire package. This example demonstrates the basic process for initializing and creating an outbound peer. Peers negotiate by exchanging version and verack messages. For demonstration, a simple handler for version message is attached to the peer.

Written by https://xojoc.pw. GPLv3 or later. Package useragent parses a user agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package useragent parses a user agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.

Package user_agent implements an HTTP User Agent string parser. It defines the type UserAgent that contains all the information from the parsed string. It also implements the Parse function and getters for all the relevant information that has been extracted from a parsed User Agent string.