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//! creating and sending HTTP requests use crate::{ error, response::{find_slice, Headers, Response, CR_LF_2}, tls, uri::Uri, }; use std::{ fmt, io::{self, ErrorKind, Read, Write}, net::{TcpStream, ToSocketAddrs}, path::Path, time::{Duration, Instant}, }; const CR_LF: &str = "\r\n"; const BUF_SIZE: usize = 8 * 1024; const SMALL_BUF_SIZE: usize = 8 * 10; const TEST_FREQ: usize = 100; ///Every iteration increases `count` by one. When `count` is equal to `stop`, `next()` ///returns `Some(true)` (and sets `count` to 0), otherwise returns `Some(false)`. ///Iterator never returns `None`. pub struct Counter { count: usize, stop: usize, } impl Counter { pub fn new(stop: usize) -> Counter { Counter { count: 0, stop } } } impl Iterator for Counter { type Item = bool; fn next(&mut self) -> Option<Self::Item> { self.count += 1; let breakpoint = self.count == self.stop; if breakpoint { self.count = 0; } Some(breakpoint) } } ///Copies data from `reader` to `writer` until the `deadline` is reached. ///Returns how many bytes has been read. pub fn copy_with_timeout<R, W>(reader: &mut R, writer: &mut W, deadline: Instant) -> io::Result<u64> where R: Read + ?Sized, W: Write + ?Sized, { let mut buf = [0; BUF_SIZE]; let mut copied = 0; let mut counter = Counter::new(TEST_FREQ); loop { let len = match reader.read(&mut buf) { Ok(0) => return Ok(copied), Ok(len) => len, Err(ref e) if e.kind() == ErrorKind::Interrupted => continue, Err(e) => return Err(e), }; writer.write_all(&buf[..len])?; copied += len as u64; if counter.next().unwrap() && Instant::now() >= deadline { return Ok(copied); } } } ///Reads data from `reader` and checks for specified `val`ue. When data contains specified value ///or `deadline` is reached, stops reading. Returns read data as array of two vectors: elements ///before and after the `val`. pub fn copy_until<R>( reader: &mut R, val: &[u8], deadline: Instant, ) -> Result<[Vec<u8>; 2], io::Error> where R: Read + ?Sized, { let mut buf = [0; SMALL_BUF_SIZE]; let mut writer = Vec::new(); let mut counter = Counter::new(TEST_FREQ); let mut split_idx = 0; loop { let len = match reader.read(&mut buf) { Ok(0) => break, Ok(len) => len, Err(ref e) if e.kind() == ErrorKind::Interrupted => continue, Err(e) => return Err(e), }; writer.write_all(&buf[..len])?; if let Some(i) = find_slice(&writer, val) { split_idx = i; break; } if counter.next().unwrap() && Instant::now() >= deadline { split_idx = writer.len(); break; } } Ok([writer[..split_idx].to_vec(), writer[split_idx..].to_vec()]) } ///HTTP request methods #[derive(Debug, PartialEq, Clone, Copy)] pub enum Method { GET, HEAD, POST, PUT, DELETE, OPTIONS, PATCH, } impl fmt::Display for Method { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { use self::Method::*; let method = match self { GET => "GET", HEAD => "HEAD", POST => "POST", PUT => "PUT", DELETE => "DELETE", OPTIONS => "OPTIONS", PATCH => "PATCH", }; write!(f, "{}", method) } } ///HTTP versions #[derive(Debug, PartialEq, Clone, Copy)] pub enum HttpVersion { Http10, Http11, Http20, } impl HttpVersion { pub fn as_str(self) -> &'static str { use self::HttpVersion::*; match self { Http10 => "HTTP/1.0", Http11 => "HTTP/1.1", Http20 => "HTTP/2.0", } } } impl fmt::Display for HttpVersion { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "{}", self.as_str()) } } ///Relatively low-level struct for making HTTP requests. /// ///It can work with any stream that implements `Read` and `Write`. ///By default it does not close the connection after completion of the response. /// ///# Examples ///``` ///use std::net::TcpStream; ///use http_req::{request::RequestBuilder, tls, uri::Uri, response::StatusCode}; /// ///let addr: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); ///let mut writer = Vec::new(); /// ///let stream = TcpStream::connect((addr.host().unwrap(), addr.corr_port())).unwrap(); ///let mut stream = tls::Config::default() /// .connect(addr.host().unwrap_or(""), stream) /// .unwrap(); /// ///let response = RequestBuilder::new(&addr) /// .header("Connection", "Close") /// .send(&mut stream, &mut writer) /// .unwrap(); /// ///assert_eq!(response.status_code(), StatusCode::new(200)); ///``` #[derive(Clone, Debug, PartialEq)] pub struct RequestBuilder<'a> { uri: &'a Uri, method: Method, version: HttpVersion, headers: Headers, body: Option<&'a [u8]>, timeout: Option<Duration>, } impl<'a> RequestBuilder<'a> { ///Creates new `RequestBuilder` with default parameters /// ///# Examples ///``` ///use std::net::TcpStream; ///use http_req::{request::RequestBuilder, tls, uri::Uri}; /// ///let addr: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); ///let mut writer = Vec::new(); /// ///let stream = TcpStream::connect((addr.host().unwrap(), addr.corr_port())).unwrap(); ///let mut stream = tls::Config::default() /// .connect(addr.host().unwrap_or(""), stream) /// .unwrap(); /// ///let response = RequestBuilder::new(&addr) /// .header("Connection", "Close") /// .send(&mut stream, &mut writer) /// .unwrap(); ///``` pub fn new(uri: &'a Uri) -> RequestBuilder<'a> { RequestBuilder { headers: Headers::default_http(uri), uri, method: Method::GET, version: HttpVersion::Http11, body: None, timeout: None, } } ///Sets request method /// ///# Examples ///``` ///use std::net::TcpStream; ///use http_req::{request::{RequestBuilder, Method}, tls, uri::Uri}; /// ///let addr: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); ///let mut writer = Vec::new(); /// ///let stream = TcpStream::connect((addr.host().unwrap(), addr.corr_port())).unwrap(); ///let mut stream = tls::Config::default() /// .connect(addr.host().unwrap_or(""), stream) /// .unwrap(); /// ///let response = RequestBuilder::new(&addr) /// .method(Method::HEAD) /// .header("Connection", "Close") /// .send(&mut stream, &mut writer) /// .unwrap(); ///``` pub fn method<T>(&mut self, method: T) -> &mut Self where Method: From<T>, { self.method = Method::from(method); self } ///Sets HTTP version /// ///# Examples ///``` ///use std::net::TcpStream; ///use http_req::{request::{RequestBuilder, HttpVersion}, tls, uri::Uri}; /// ///let addr: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); ///let mut writer = Vec::new(); /// ///let stream = TcpStream::connect((addr.host().unwrap(), addr.corr_port())).unwrap(); ///let mut stream = tls::Config::default() /// .connect(addr.host().unwrap_or(""), stream) /// .unwrap(); /// ///let response = RequestBuilder::new(&addr) /// .version(HttpVersion::Http10) /// .header("Connection", "Close") /// .send(&mut stream, &mut writer) /// .unwrap(); ///``` pub fn version<T>(&mut self, version: T) -> &mut Self where HttpVersion: From<T>, { self.version = HttpVersion::from(version); self } ///Replaces all it's headers with headers passed to the function /// ///# Examples ///``` ///use std::net::TcpStream; ///use http_req::{request::{RequestBuilder, Method}, response::Headers, tls, uri::Uri}; /// ///let addr: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); ///let mut writer = Vec::new(); ///let mut headers = Headers::new(); ///headers.insert("Accept-Charset", "utf-8"); ///headers.insert("Accept-Language", "en-US"); ///headers.insert("Host", "rust-lang.org"); ///headers.insert("Connection", "Close"); /// ///let stream = TcpStream::connect((addr.host().unwrap(), addr.corr_port())).unwrap(); ///let mut stream = tls::Config::default() /// .connect(addr.host().unwrap_or(""), stream) /// .unwrap(); /// ///let response = RequestBuilder::new(&addr) /// .headers(headers) /// .send(&mut stream, &mut writer) /// .unwrap(); ///``` pub fn headers<T>(&mut self, headers: T) -> &mut Self where Headers: From<T>, { self.headers = Headers::from(headers); self } ///Adds new header to existing/default headers /// ///# Examples ///``` ///use std::net::TcpStream; ///use http_req::{request::{RequestBuilder, Method}, tls, uri::Uri}; /// ///let addr: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); ///let mut writer = Vec::new(); /// ///let stream = TcpStream::connect((addr.host().unwrap(), addr.corr_port())).unwrap(); ///let mut stream = tls::Config::default() /// .connect(addr.host().unwrap_or(""), stream) /// .unwrap(); /// ///let response = RequestBuilder::new(&addr) /// .header("Connection", "Close") /// .send(&mut stream, &mut writer) /// .unwrap(); ///``` pub fn header<T, U>(&mut self, key: &T, val: &U) -> &mut Self where T: ToString + ?Sized, U: ToString + ?Sized, { self.headers.insert(key, val); self } ///Sets body for request /// ///# Examples ///``` ///use std::net::TcpStream; ///use http_req::{request::{RequestBuilder, Method}, tls, uri::Uri}; /// ///let addr: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); ///const body: &[u8; 27] = b"field1=value1&field2=value2"; ///let mut writer = Vec::new(); /// ///let stream = TcpStream::connect((addr.host().unwrap(), addr.corr_port())).unwrap(); ///let mut stream = tls::Config::default() /// .connect(addr.host().unwrap_or(""), stream) /// .unwrap(); /// ///let response = RequestBuilder::new(&addr) /// .method(Method::POST) /// .body(body) /// .header("Connection", "Close") /// .send(&mut stream, &mut writer) /// .unwrap(); ///``` pub fn body(&mut self, body: &'a [u8]) -> &mut Self { self.body = Some(body); self } ///Sets timeout for entire connection. /// ///# Examples ///``` ///use std::{net::TcpStream, time::{Duration, Instant}}; ///use http_req::{request::RequestBuilder, tls, uri::Uri}; /// ///let addr: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); ///let mut writer = Vec::new(); /// ///let stream = TcpStream::connect((addr.host().unwrap(), addr.corr_port())).unwrap(); ///let mut stream = tls::Config::default() /// .connect(addr.host().unwrap_or(""), stream) /// .unwrap(); ///let timeout = Some(Duration::from_secs(3600)); /// ///let response = RequestBuilder::new(&addr) /// .timeout(timeout) /// .header("Connection", "Close") /// .send(&mut stream, &mut writer) /// .unwrap(); ///``` pub fn timeout<T>(&mut self, timeout: Option<T>) -> &mut Self where Duration: From<T>, { self.timeout = timeout.map(Duration::from); self } ///Sends HTTP request in these steps: /// ///- Writes request message to `stream`. ///- Writes response's body to `writer`. ///- Returns response for this request. /// ///# Examples /// ///HTTP ///``` ///use std::net::TcpStream; ///use http_req::{request::RequestBuilder, uri::Uri}; /// /// //This address is automatically redirected to HTTPS, so response code will not ever be 200 ///let addr: Uri = "http://www.rust-lang.org/learn".parse().unwrap(); ///let mut writer = Vec::new(); ///let mut stream = TcpStream::connect((addr.host().unwrap(), addr.corr_port())).unwrap(); /// ///let response = RequestBuilder::new(&addr) /// .header("Connection", "Close") /// .send(&mut stream, &mut writer) /// .unwrap(); ///``` /// ///HTTPS ///``` ///use std::net::TcpStream; ///use http_req::{request::RequestBuilder, tls, uri::Uri}; /// ///let addr: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); ///let mut writer = Vec::new(); /// ///let stream = TcpStream::connect((addr.host().unwrap(), addr.corr_port())).unwrap(); ///let mut stream = tls::Config::default() /// .connect(addr.host().unwrap_or(""), stream) /// .unwrap(); /// ///let response = RequestBuilder::new(&addr) /// .header("Connection", "Close") /// .send(&mut stream, &mut writer) /// .unwrap(); ///``` pub fn send<T, U>(&self, stream: &mut T, writer: &mut U) -> Result<Response, error::Error> where T: Write + Read, U: Write, { self.write_msg(stream, &self.parse_msg())?; let head_deadline = match self.timeout { Some(t) => Instant::now() + t, None => Instant::now() + Duration::from_secs(360), }; let (res, body_part) = self.read_head(stream, head_deadline)?; if self.method != Method::HEAD { writer.write_all(&body_part)?; if let Some(timeout) = self.timeout { let deadline = Instant::now() + timeout; copy_with_timeout(stream, writer, deadline)?; } else { io::copy(stream, writer)?; } } Ok(res) } ///Writes message to `stream` and flushes it pub fn write_msg<T, U>(&self, stream: &mut T, msg: &U) -> Result<(), io::Error> where T: Write, U: AsRef<[u8]>, { stream.write_all(msg.as_ref())?; stream.flush()?; Ok(()) } ///Reads head of server's response pub fn read_head<T: Read>( &self, stream: &mut T, deadline: Instant, ) -> Result<(Response, Vec<u8>), error::Error> { let [head, body_part] = copy_until(stream, &CR_LF_2, deadline)?; Ok((Response::from_head(&head)?, body_part)) } ///Parses request message for this `RequestBuilder` pub fn parse_msg(&self) -> Vec<u8> { let request_line = format!( "{} {} {}{}", self.method, self.uri.resource(), self.version, CR_LF ); let headers: String = self .headers .iter() .map(|(k, v)| format!("{}: {}{}", k, v, CR_LF)) .collect(); let mut request_msg = (request_line + &headers + CR_LF).as_bytes().to_vec(); if let Some(b) = &self.body { request_msg.extend(*b); } request_msg } } ///Relatively higher-level struct for making HTTP requests. /// ///It creates stream (`TcpStream` or `TlsStream`) appropriate for the type of uri (`http`/`https`) ///By default it closes connection after completion of the response. /// ///# Examples ///``` ///use http_req::{request::Request, uri::Uri, response::StatusCode}; /// ///let mut writer = Vec::new(); ///let uri: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); /// ///let response = Request::new(&uri).send(&mut writer).unwrap();; ///assert_eq!(response.status_code(), StatusCode::new(200)); ///``` /// #[derive(Clone, Debug, PartialEq)] pub struct Request<'a> { inner: RequestBuilder<'a>, connect_timeout: Option<Duration>, read_timeout: Option<Duration>, write_timeout: Option<Duration>, root_cert_file_pem: Option<&'a Path>, } impl<'a> Request<'a> { ///Creates new `Request` with default parameters /// ///# Examples ///``` ///use http_req::{request::Request, uri::Uri}; /// ///let mut writer = Vec::new(); ///let uri: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); /// ///let response = Request::new(&uri).send(&mut writer).unwrap();; ///``` pub fn new(uri: &'a Uri) -> Request<'a> { let mut builder = RequestBuilder::new(&uri); builder.header("Connection", "Close"); Request { inner: builder, connect_timeout: Some(Duration::from_secs(60)), read_timeout: Some(Duration::from_secs(60)), write_timeout: Some(Duration::from_secs(60)), root_cert_file_pem: None, } } ///Sets request method /// ///# Examples ///``` ///use http_req::{request::{Request, Method}, uri::Uri}; /// ///let mut writer = Vec::new(); ///let uri: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); /// ///let response = Request::new(&uri) /// .method(Method::HEAD) /// .send(&mut writer) /// .unwrap(); ///``` pub fn method<T>(&mut self, method: T) -> &mut Self where Method: From<T>, { self.inner.method(method); self } ///Sets HTTP version /// ///# Examples ///``` ///use http_req::{request::{Request, HttpVersion}, uri::Uri}; /// ///let mut writer = Vec::new(); ///let uri: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); /// ///let response = Request::new(&uri) /// .version(HttpVersion::Http10) /// .send(&mut writer) /// .unwrap(); ///``` pub fn version<T>(&mut self, version: T) -> &mut Self where HttpVersion: From<T>, { self.inner.version(version); self } ///Replaces all it's headers with headers passed to the function /// ///# Examples ///``` ///use http_req::{request::Request, uri::Uri, response::Headers}; /// ///let mut writer = Vec::new(); ///let uri: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); /// ///let mut headers = Headers::new(); ///headers.insert("Accept-Charset", "utf-8"); ///headers.insert("Accept-Language", "en-US"); ///headers.insert("Host", "rust-lang.org"); ///headers.insert("Connection", "Close"); /// ///let response = Request::new(&uri) /// .headers(headers) /// .send(&mut writer) /// .unwrap();; ///``` pub fn headers<T>(&mut self, headers: T) -> &mut Self where Headers: From<T>, { self.inner.headers(headers); self } ///Adds header to existing/default headers /// ///# Examples ///``` ///use http_req::{request::Request, uri::Uri}; /// ///let mut writer = Vec::new(); ///let uri: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); /// ///let response = Request::new(&uri) /// .header("Accept-Language", "en-US") /// .send(&mut writer) /// .unwrap(); ///``` pub fn header<T, U>(&mut self, key: &T, val: &U) -> &mut Self where T: ToString + ?Sized, U: ToString + ?Sized, { self.inner.header(key, val); self } ///Sets body for request /// ///# Examples ///``` ///use http_req::{request::{Request, Method}, uri::Uri}; /// ///let mut writer = Vec::new(); ///let uri: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); ///const body: &[u8; 27] = b"field1=value1&field2=value2"; /// ///let response = Request::new(&uri) /// .method(Method::POST) /// .body(body) /// .send(&mut writer) /// .unwrap(); ///``` pub fn body(&mut self, body: &'a [u8]) -> &mut Self { self.inner.body(body); self } ///Sets connection timeout of request. /// ///# Examples ///``` ///use std::time::{Duration, Instant}; ///use http_req::{request::Request, uri::Uri}; /// ///let mut writer = Vec::new(); ///let uri: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); ///const body: &[u8; 27] = b"field1=value1&field2=value2"; ///let timeout = Some(Duration::from_secs(3600)); /// ///let response = Request::new(&uri) /// .timeout(timeout) /// .send(&mut writer) /// .unwrap(); ///``` pub fn timeout<T>(&mut self, timeout: Option<T>) -> &mut Self where Duration: From<T>, { self.inner.timeout = timeout.map(Duration::from); self } ///Sets connect timeout while using internal `TcpStream` instance /// ///- If there is a timeout, it will be passed to /// [`TcpStream::connect_timeout`][TcpStream::connect_timeout]. ///- If `None` is provided, [`TcpStream::connect`][TcpStream::connect] will /// be used. A timeout will still be enforced by the operating system, but /// the exact value depends on the platform. /// ///[TcpStream::connect]: https://doc.rust-lang.org/std/net/struct.TcpStream.html#method.connect ///[TcpStream::connect_timeout]: https://doc.rust-lang.org/std/net/struct.TcpStream.html#method.connect_timeout /// ///# Examples ///``` ///use http_req::{request::Request, uri::Uri}; ///use std::time::Duration; /// ///let mut writer = Vec::new(); ///let uri: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); ///const time: Option<Duration> = Some(Duration::from_secs(10)); /// ///let response = Request::new(&uri) /// .connect_timeout(time) /// .send(&mut writer) /// .unwrap(); ///``` pub fn connect_timeout<T>(&mut self, timeout: Option<T>) -> &mut Self where Duration: From<T>, { self.connect_timeout = timeout.map(Duration::from); self } ///Sets read timeout on internal `TcpStream` instance /// ///`timeout` will be passed to ///[`TcpStream::set_read_timeout`][TcpStream::set_read_timeout]. /// ///[TcpStream::set_read_timeout]: https://doc.rust-lang.org/std/net/struct.TcpStream.html#method.set_read_timeout /// ///# Examples ///``` ///use http_req::{request::Request, uri::Uri}; ///use std::time::Duration; /// ///let mut writer = Vec::new(); ///let uri: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); ///const time: Option<Duration> = Some(Duration::from_secs(15)); /// ///let response = Request::new(&uri) /// .read_timeout(time) /// .send(&mut writer) /// .unwrap(); ///``` pub fn read_timeout<T>(&mut self, timeout: Option<T>) -> &mut Self where Duration: From<T>, { self.read_timeout = timeout.map(Duration::from); self } ///Sets write timeout on internal `TcpStream` instance /// ///`timeout` will be passed to ///[`TcpStream::set_write_timeout`][TcpStream::set_write_timeout]. /// ///[TcpStream::set_write_timeout]: https://doc.rust-lang.org/std/net/struct.TcpStream.html#method.set_write_timeout /// ///# Examples ///``` ///use http_req::{request::Request, uri::Uri}; ///use std::time::Duration; /// ///let mut writer = Vec::new(); ///let uri: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); ///const time: Option<Duration> = Some(Duration::from_secs(5)); /// ///let response = Request::new(&uri) /// .write_timeout(time) /// .send(&mut writer) /// .unwrap(); ///``` pub fn write_timeout<T>(&mut self, timeout: Option<T>) -> &mut Self where Duration: From<T>, { self.write_timeout = timeout.map(Duration::from); self } ///Add a file containing the PEM-encoded certificates that should be added in the trusted root store. pub fn root_cert_file_pem(&mut self, file_path: &'a Path) -> &mut Self { self.root_cert_file_pem = Some(file_path); self } ///Sends HTTP request. /// ///Creates `TcpStream` (and wraps it with `TlsStream` if needed). Writes request message ///to created stream. Returns response for this request. Writes response's body to `writer`. /// ///# Examples ///``` ///use http_req::{request::Request, uri::Uri}; /// ///let mut writer = Vec::new(); ///let uri: Uri = "https://www.rust-lang.org/learn".parse().unwrap(); /// ///let response = Request::new(&uri).send(&mut writer).unwrap(); ///``` pub fn send<T: Write>(&self, writer: &mut T) -> Result<Response, error::Error> { let host = self.inner.uri.host().unwrap_or(""); let port = self.inner.uri.corr_port(); let mut stream = match self.connect_timeout { Some(timeout) => connect_timeout(host, port, timeout)?, None => TcpStream::connect((host, port))?, }; stream.set_read_timeout(self.read_timeout)?; stream.set_write_timeout(self.write_timeout)?; if self.inner.uri.scheme() == "https" { let mut cnf = tls::Config::default(); let cnf = match self.root_cert_file_pem { Some(p) => cnf.add_root_cert_file_pem(p)?, None => &mut cnf, }; let mut stream = cnf.connect(host, stream)?; self.inner.send(&mut stream, writer) } else { self.inner.send(&mut stream, writer) } } } ///Connects to target host with a timeout pub fn connect_timeout<T, U>(host: T, port: u16, timeout: U) -> io::Result<TcpStream> where Duration: From<U>, T: AsRef<str>, { let host = host.as_ref(); let timeout = Duration::from(timeout); let addrs: Vec<_> = (host, port).to_socket_addrs()?.collect(); let count = addrs.len(); for (idx, addr) in addrs.into_iter().enumerate() { match TcpStream::connect_timeout(&addr, timeout) { Ok(stream) => return Ok(stream), Err(err) => match err.kind() { io::ErrorKind::TimedOut => return Err(err), _ => { if idx + 1 == count { return Err(err); } } }, }; } Err(io::Error::new( io::ErrorKind::AddrNotAvailable, format!("Could not resolve address for {:?}", host), )) } ///Creates and sends GET request. Returns response for this request. /// ///# Examples ///``` ///use http_req::request; /// ///let mut writer = Vec::new(); ///const uri: &str = "https://www.rust-lang.org/learn"; /// ///let response = request::get(uri, &mut writer).unwrap(); ///``` pub fn get<T: AsRef<str>, U: Write>(uri: T, writer: &mut U) -> Result<Response, error::Error> { let uri = uri.as_ref().parse::<Uri>()?; Request::new(&uri).send(writer) } ///Creates and sends HEAD request. Returns response for this request. /// ///# Examples ///``` ///use http_req::request; /// ///const uri: &str = "https://www.rust-lang.org/learn"; ///let response = request::head(uri).unwrap(); ///``` pub fn head<T: AsRef<str>>(uri: T) -> Result<Response, error::Error> { let mut writer = Vec::new(); let uri = uri.as_ref().parse::<Uri>()?; Request::new(&uri).method(Method::HEAD).send(&mut writer) } #[cfg(test)] mod tests { use super::*; use crate::{error::Error, response::StatusCode}; use std::io::Cursor; const UNSUCCESS_CODE: StatusCode = StatusCode::new(400); const URI: &str = "http://doc.rust-lang.org/std/string/index.html"; const URI_S: &str = "https://doc.rust-lang.org/std/string/index.html"; const BODY: [u8; 14] = [78, 97, 109, 101, 61, 74, 97, 109, 101, 115, 43, 74, 97, 121]; const RESPONSE: &[u8; 129] = b"HTTP/1.1 200 OK\r\n\ Date: Sat, 11 Jan 2003 02:44:04 GMT\r\n\ Content-Type: text/html\r\n\ Content-Length: 100\r\n\r\n\ <html>hello</html>\r\n\r\nhello"; const RESPONSE_H: &[u8; 102] = b"HTTP/1.1 200 OK\r\n\ Date: Sat, 11 Jan 2003 02:44:04 GMT\r\n\ Content-Type: text/html\r\n\ Content-Length: 100\r\n\r\n"; #[test] fn counter_new() { let counter = Counter::new(200); assert_eq!(counter.count, 0); assert_eq!(counter.stop, 200); } #[test] fn counter_next() { let mut counter = Counter::new(5); assert_eq!(counter.next(), Some(false)); assert_eq!(counter.next(), Some(false)); assert_eq!(counter.next(), Some(false)); assert_eq!(counter.next(), Some(false)); assert_eq!(counter.next(), Some(true)); assert_eq!(counter.next(), Some(false)); assert_eq!(counter.next(), Some(false)); } #[test] fn copy_data_until() { let mut reader = Vec::new(); reader.extend(&RESPONSE[..]); let mut reader = Cursor::new(reader); let [head, _body] = copy_until( &mut reader, &CR_LF_2, Instant::now() + Duration::from_secs(360), ) .unwrap(); assert_eq!(&head[..], &RESPONSE_H[..]); } #[test] fn method_display() { const METHOD: Method = Method::HEAD; assert_eq!(&format!("{}", METHOD), "HEAD"); } #[test] fn request_b_new() { RequestBuilder::new(&URI.parse().unwrap()); RequestBuilder::new(&URI_S.parse().unwrap()); } #[test] fn request_b_method() { let uri: Uri = URI.parse().unwrap(); let mut req = RequestBuilder::new(&uri); let req = req.method(Method::HEAD); assert_eq!(req.method, Method::HEAD); } #[test] fn request_b_headers() { let mut headers = Headers::new(); headers.insert("Accept-Charset", "utf-8"); headers.insert("Accept-Language", "en-US"); headers.insert("Host", "doc.rust-lang.org"); headers.insert("Connection", "Close"); let uri: Uri = URI.parse().unwrap(); let mut req = RequestBuilder::new(&uri); let req = req.headers(headers.clone()); assert_eq!(req.headers, headers); } #[test] fn request_b_header() { let uri: Uri = URI.parse().unwrap(); let mut req = RequestBuilder::new(&uri); let k = "Connection"; let v = "Close"; let mut expect_headers = Headers::new(); expect_headers.insert("Host", "doc.rust-lang.org"); expect_headers.insert("Referer", "http://doc.rust-lang.org/std/string/index.html"); expect_headers.insert(k, v); let req = req.header(k, v); assert_eq!(req.headers, expect_headers); } #[test] fn request_b_body() { let uri: Uri = URI.parse().unwrap(); let mut req = RequestBuilder::new(&uri); let req = req.body(&BODY); assert_eq!(req.body, Some(BODY.as_ref())); } #[test] fn request_b_timeout() { let uri = URI.parse().unwrap(); let mut req = RequestBuilder::new(&uri); let timeout = Some(Duration::from_secs(360)); req.timeout(timeout); assert_eq!(req.timeout, timeout); } #[ignore] #[test] fn request_b_send() { let mut writer = Vec::new(); let uri: Uri = URI.parse().unwrap(); let mut stream = TcpStream::connect((uri.host().unwrap_or(""), uri.corr_port())).unwrap(); RequestBuilder::new(&URI.parse().unwrap()) .header("Connection", "Close") .send(&mut stream, &mut writer) .unwrap(); } #[ignore] #[test] fn request_b_send_secure() { let mut writer = Vec::new(); let uri: Uri = URI_S.parse().unwrap(); let stream = TcpStream::connect((uri.host().unwrap_or(""), uri.corr_port())).unwrap(); let mut secure_stream = tls::Config::default() .connect(uri.host().unwrap_or(""), stream) .unwrap(); RequestBuilder::new(&URI_S.parse().unwrap()) .header("Connection", "Close") .send(&mut secure_stream, &mut writer) .unwrap(); } #[test] fn request_b_parse_msg() { let uri = URI.parse().unwrap(); let req = RequestBuilder::new(&uri); const DEFAULT_MSG: &str = "GET /std/string/index.html HTTP/1.1\r\n\ Referer: http://doc.rust-lang.org/std/string/index.html\r\n\ Host: doc.rust-lang.org\r\n\r\n"; let msg = req.parse_msg(); let msg = String::from_utf8_lossy(&msg).into_owned(); for line in DEFAULT_MSG.lines() { assert!(msg.contains(line)); } for line in msg.lines() { assert!(DEFAULT_MSG.contains(line)); } } #[test] fn request_new() { let uri = URI.parse().unwrap(); Request::new(&uri); } #[test] fn request_method() { let uri = URI.parse().unwrap(); let mut req = Request::new(&uri); req.method(Method::HEAD); assert_eq!(req.inner.method, Method::HEAD); } #[test] fn request_headers() { let mut headers = Headers::new(); headers.insert("Accept-Charset", "utf-8"); headers.insert("Accept-Language", "en-US"); headers.insert("Host", "doc.rust-lang.org"); headers.insert("Connection", "Close"); let uri: Uri = URI.parse().unwrap(); let mut req = Request::new(&uri); let req = req.headers(headers.clone()); assert_eq!(req.inner.headers, headers); } #[test] fn request_header() { let uri: Uri = URI.parse().unwrap(); let mut req = Request::new(&uri); let k = "Accept-Language"; let v = "en-US"; let mut expect_headers = Headers::new(); expect_headers.insert("Host", "doc.rust-lang.org"); expect_headers.insert("Referer", "http://doc.rust-lang.org/std/string/index.html"); expect_headers.insert("Connection", "Close"); expect_headers.insert(k, v); let req = req.header(k, v); assert_eq!(req.inner.headers, expect_headers); } #[test] fn request_body() { let uri = URI.parse().unwrap(); let mut req = Request::new(&uri); let req = req.body(&BODY); assert_eq!(req.inner.body, Some(BODY.as_ref())); } #[test] fn request_timeout() { let uri = URI.parse().unwrap(); let mut request = Request::new(&uri); let timeout = Some(Duration::from_secs(360)); request.timeout(timeout); assert_eq!(request.inner.timeout, timeout); } #[test] fn request_connect_timeout() { let uri = URI.parse().unwrap(); let mut request = Request::new(&uri); request.connect_timeout(Some(Duration::from_nanos(1))); assert_eq!(request.connect_timeout, Some(Duration::from_nanos(1))); let err = request.send(&mut io::sink()).unwrap_err(); match err { Error::IO(err) => assert_eq!(err.kind(), io::ErrorKind::TimedOut), other => panic!("Expected error to be io::Error, got: {:?}", other), }; } #[ignore] #[test] fn request_read_timeout() { let uri = URI.parse().unwrap(); let mut request = Request::new(&uri); request.read_timeout(Some(Duration::from_nanos(1))); assert_eq!(request.read_timeout, Some(Duration::from_nanos(1))); let err = request.send(&mut io::sink()).unwrap_err(); match err { Error::IO(err) => match err.kind() { io::ErrorKind::WouldBlock | io::ErrorKind::TimedOut => {} other => panic!( "Expected error kind to be one of WouldBlock/TimedOut, got: {:?}", other ), }, other => panic!("Expected error to be io::Error, got: {:?}", other), }; } #[test] fn request_write_timeout() { let uri = URI.parse().unwrap(); let mut request = Request::new(&uri); request.write_timeout(Some(Duration::from_nanos(100))); assert_eq!(request.write_timeout, Some(Duration::from_nanos(100))); } #[test] fn request_send() { let mut writer = Vec::new(); let uri = URI.parse().unwrap(); let res = Request::new(&uri).send(&mut writer).unwrap(); assert_ne!(res.status_code(), UNSUCCESS_CODE); } #[ignore] #[test] fn request_get() { let mut writer = Vec::new(); let res = get(URI, &mut writer).unwrap(); assert_ne!(res.status_code(), UNSUCCESS_CODE); let mut writer = Vec::with_capacity(200); let res = get(URI_S, &mut writer).unwrap(); assert_ne!(res.status_code(), UNSUCCESS_CODE); } #[ignore] #[test] fn request_head() { let res = head(URI).unwrap(); assert_ne!(res.status_code(), UNSUCCESS_CODE); let res = head(URI_S).unwrap(); assert_ne!(res.status_code(), UNSUCCESS_CODE); } }