536 lines
15 KiB
Rust
536 lines
15 KiB
Rust
use std::fmt;
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use serde::Serialize;
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use serde_json;
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use serde_urlencoded;
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use super::body::{self, Body};
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use super::client::{Client, Pending, pending_err};
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use header::{ContentType, Headers};
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use {Method, Url};
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/// A request which can be executed with `Client::execute()`.
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pub struct Request {
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method: Method,
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url: Url,
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headers: Headers,
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body: Option<Body>,
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}
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/// A builder to construct the properties of a `Request`.
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pub struct RequestBuilder {
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client: Client,
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request: Option<Request>,
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err: Option<::Error>,
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}
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impl Request {
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/// Constructs a new request.
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#[inline]
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pub fn new(method: Method, url: Url) -> Self {
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Request {
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method,
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url,
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headers: Headers::new(),
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body: None,
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}
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}
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/// Get the method.
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#[inline]
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pub fn method(&self) -> &Method {
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&self.method
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}
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/// Get a mutable reference to the method.
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#[inline]
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pub fn method_mut(&mut self) -> &mut Method {
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&mut self.method
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}
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/// Get the url.
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#[inline]
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pub fn url(&self) -> &Url {
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&self.url
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}
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/// Get a mutable reference to the url.
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#[inline]
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pub fn url_mut(&mut self) -> &mut Url {
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&mut self.url
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}
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/// Get the headers.
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#[inline]
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pub fn headers(&self) -> &Headers {
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&self.headers
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}
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/// Get a mutable reference to the headers.
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#[inline]
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pub fn headers_mut(&mut self) -> &mut Headers {
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&mut self.headers
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}
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/// Get the body.
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#[inline]
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pub fn body(&self) -> Option<&Body> {
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self.body.as_ref()
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}
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/// Get a mutable reference to the body.
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#[inline]
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pub fn body_mut(&mut self) -> &mut Option<Body> {
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&mut self.body
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}
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}
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impl RequestBuilder {
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/// Add a `Header` to this Request.
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pub fn header<H>(&mut self, header: H) -> &mut RequestBuilder
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where
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H: ::header::Header,
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{
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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req.headers_mut().set(header);
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}
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self
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}
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/// Add a set of Headers to the existing ones on this Request.
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///
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/// The headers will be merged in to any already set.
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pub fn headers(&mut self, headers: ::header::Headers) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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req.headers_mut().extend(headers.iter());
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}
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self
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}
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/// Enable HTTP basic authentication.
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pub fn basic_auth<U, P>(&mut self, username: U, password: Option<P>) -> &mut RequestBuilder
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where
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U: Into<String>,
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P: Into<String>,
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{
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self.header(::header::Authorization(::header::Basic {
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username: username.into(),
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password: password.map(|p| p.into()),
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}))
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}
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/// Set the request body.
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pub fn body<T: Into<Body>>(&mut self, body: T) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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*req.body_mut() = Some(body.into());
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}
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self
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}
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/// Modify the query string of the URL.
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///
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/// Modifies the URL of this request, adding the parameters provided.
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/// This method appends and does not overwrite. This means that it can
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/// be called multiple times and that existing query parameters are not
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/// overwritten if the same key is used. The key will simply show up
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/// twice in the query string.
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/// Calling `.query([("foo", "a"), ("foo", "b")])` gives `"foo=a&boo=b"`.
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///
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/// # Note
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/// This method does not support serializing a single key-value
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/// pair. Instead of using `.query(("key", "val"))`, use a sequence, such
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/// as `.query(&[("key", "val")])`. It's also possible to serialize structs
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/// and maps into a key-value pair.
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///
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/// # Errors
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/// This method will fail if the object you provide cannot be serialized
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/// into a query string.
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pub fn query<T: Serialize + ?Sized>(&mut self, query: &T) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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let url = req.url_mut();
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let mut pairs = url.query_pairs_mut();
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let serializer = serde_urlencoded::Serializer::new(&mut pairs);
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if let Err(err) = query.serialize(serializer) {
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self.err = Some(::error::from(err));
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}
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}
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self
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}
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/// Send a form body.
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pub fn form<T: Serialize + ?Sized>(&mut self, form: &T) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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match serde_urlencoded::to_string(form) {
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Ok(body) => {
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req.headers_mut().set(ContentType::form_url_encoded());
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*req.body_mut() = Some(body.into());
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},
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Err(err) => self.err = Some(::error::from(err)),
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}
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}
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self
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}
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/// Send a JSON body.
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///
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/// # Errors
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///
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/// Serialization can fail if `T`'s implementation of `Serialize` decides to
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/// fail, or if `T` contains a map with non-string keys.
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pub fn json<T: Serialize + ?Sized>(&mut self, json: &T) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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match serde_json::to_vec(json) {
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Ok(body) => {
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req.headers_mut().set(ContentType::json());
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*req.body_mut() = Some(body.into());
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},
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Err(err) => self.err = Some(::error::from(err)),
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}
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}
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self
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}
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/// Build a `Request`, which can be inspected, modified and executed with
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/// `Client::execute()`.
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///
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/// # Panics
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///
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/// This method consumes builder internal state. It panics on an attempt to
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/// reuse already consumed builder.
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pub fn build(&mut self) -> ::Result<Request> {
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if let Some(err) = self.err.take() {
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Err(err)
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} else {
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Ok(self.request
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.take()
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.expect("RequestBuilder cannot be reused after builder a Request"))
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}
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}
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/// Constructs the Request and sends it the target URL, returning a Response.
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///
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/// # Errors
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///
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/// This method fails if there was an error while sending request,
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/// redirect loop was detected or redirect limit was exhausted.
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pub fn send(&mut self) -> Pending {
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match self.build() {
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Ok(req) => self.client.execute(req),
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Err(err) => pending_err(err),
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}
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}
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}
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fn request_mut<'a>(req: &'a mut Option<Request>, err: &Option<::Error>) -> Option<&'a mut Request> {
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if err.is_some() {
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None
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} else {
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req.as_mut()
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}
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}
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impl fmt::Debug for Request {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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fmt_request_fields(&mut f.debug_struct("Request"), self)
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.finish()
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}
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}
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impl fmt::Debug for RequestBuilder {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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if let Some(ref req) = self.request {
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fmt_request_fields(&mut f.debug_struct("RequestBuilder"), req)
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.finish()
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} else {
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f.debug_tuple("RequestBuilder")
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.field(&"Consumed")
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.finish()
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}
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}
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}
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fn fmt_request_fields<'a, 'b>(f: &'a mut fmt::DebugStruct<'a, 'b>, req: &Request) -> &'a mut fmt::DebugStruct<'a, 'b> {
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f.field("method", &req.method)
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.field("url", &req.url)
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.field("headers", &req.headers)
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}
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// pub(crate)
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#[inline]
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pub fn builder(client: Client, req: ::Result<Request>) -> RequestBuilder {
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match req {
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Ok(req) => RequestBuilder {
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client: client,
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request: Some(req),
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err: None,
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},
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Err(err) => RequestBuilder {
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client: client,
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request: None,
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err: Some(err)
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},
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}
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}
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#[inline]
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pub fn pieces(req: Request) -> (Method, Url, Headers, Option<Body>) {
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(req.method, req.url, req.headers, req.body)
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}
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#[cfg(test)]
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mod tests {
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use super::Client;
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use std::collections::BTreeMap;
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use tokio_core::reactor::Core;
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#[test]
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fn add_query_append() {
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let mut core = Core::new().unwrap();
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let client = Client::new(&core.handle());
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let some_url = "https://google.com/";
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let mut r = client.get(some_url);
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r.query(&[("foo", "bar")]);
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r.query(&[("qux", 3)]);
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let req = r.build().expect("request is valid");
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assert_eq!(req.url().query(), Some("foo=bar&qux=3"));
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}
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#[test]
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fn add_query_append_same() {
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let mut core = Core::new().unwrap();
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let client = Client::new(&core.handle());
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let some_url = "https://google.com/";
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let mut r = client.get(some_url);
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r.query(&[("foo", "a"), ("foo", "b")]);
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let req = r.build().expect("request is valid");
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assert_eq!(req.url().query(), Some("foo=a&foo=b"));
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}
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#[test]
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fn add_query_struct() {
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#[derive(Serialize)]
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struct Params {
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foo: String,
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qux: i32,
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}
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let mut core = Core::new().unwrap();
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let client = Client::new(&core.handle());
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let some_url = "https://google.com/";
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let mut r = client.get(some_url);
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let params = Params { foo: "bar".into(), qux: 3 };
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r.query(¶ms);
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let req = r.build().expect("request is valid");
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assert_eq!(req.url().query(), Some("foo=bar&qux=3"));
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}
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#[test]
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fn add_query_map() {
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let mut params = BTreeMap::new();
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params.insert("foo", "bar");
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params.insert("qux", "three");
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let mut core = Core::new().unwrap();
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let client = Client::new(&core.handle());
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let some_url = "https://google.com/";
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let mut r = client.get(some_url);
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r.query(¶ms);
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let req = r.build().expect("request is valid");
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assert_eq!(req.url().query(), Some("foo=bar&qux=three"));
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}
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/*
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use {body, Method};
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use super::Client;
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use header::{Host, Headers, ContentType};
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use std::collections::HashMap;
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use serde_urlencoded;
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use serde_json;
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#[test]
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fn basic_get_request() {
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let client = Client::new().unwrap();
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let some_url = "https://google.com/";
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let r = client.get(some_url).unwrap().build();
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assert_eq!(r.method, Method::Get);
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assert_eq!(r.url.as_str(), some_url);
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}
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#[test]
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fn basic_head_request() {
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let client = Client::new().unwrap();
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let some_url = "https://google.com/";
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let r = client.head(some_url).unwrap().build();
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assert_eq!(r.method, Method::Head);
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assert_eq!(r.url.as_str(), some_url);
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}
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#[test]
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fn basic_post_request() {
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let client = Client::new().unwrap();
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let some_url = "https://google.com/";
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let r = client.post(some_url).unwrap().build();
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assert_eq!(r.method, Method::Post);
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assert_eq!(r.url.as_str(), some_url);
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}
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#[test]
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fn basic_put_request() {
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let client = Client::new().unwrap();
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let some_url = "https://google.com/";
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let r = client.put(some_url).unwrap().build();
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assert_eq!(r.method, Method::Put);
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assert_eq!(r.url.as_str(), some_url);
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}
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#[test]
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fn basic_patch_request() {
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let client = Client::new().unwrap();
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let some_url = "https://google.com/";
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let r = client.patch(some_url).unwrap().build();
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assert_eq!(r.method, Method::Patch);
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assert_eq!(r.url.as_str(), some_url);
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}
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#[test]
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fn basic_delete_request() {
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let client = Client::new().unwrap();
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let some_url = "https://google.com/";
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let r = client.delete(some_url).unwrap().build();
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assert_eq!(r.method, Method::Delete);
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assert_eq!(r.url.as_str(), some_url);
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}
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#[test]
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fn add_header() {
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let client = Client::new().unwrap();
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let some_url = "https://google.com/";
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let mut r = client.post(some_url).unwrap();
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let header = Host {
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hostname: "google.com".to_string(),
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port: None,
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};
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// Add a copy of the header to the request builder
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let r = r.header(header.clone()).build();
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// then check it was actually added
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assert_eq!(r.headers.get::<Host>(), Some(&header));
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}
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#[test]
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fn add_headers() {
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let client = Client::new().unwrap();
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let some_url = "https://google.com/";
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let mut r = client.post(some_url).unwrap();
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let header = Host {
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hostname: "google.com".to_string(),
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port: None,
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};
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let mut headers = Headers::new();
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headers.set(header);
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// Add a copy of the headers to the request builder
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let r = r.headers(headers.clone()).build();
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// then make sure they were added correctly
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assert_eq!(r.headers, headers);
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}
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#[test]
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fn add_body() {
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let client = Client::new().unwrap();
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let some_url = "https://google.com/";
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let mut r = client.post(some_url).unwrap();
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let body = "Some interesting content";
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let r = r.body(body).build();
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let buf = body::read_to_string(r.body.unwrap()).unwrap();
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assert_eq!(buf, body);
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}
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#[test]
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fn add_form() {
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let client = Client::new().unwrap();
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let some_url = "https://google.com/";
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let mut r = client.post(some_url).unwrap();
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let mut form_data = HashMap::new();
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form_data.insert("foo", "bar");
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let r = r.form(&form_data).unwrap().build();
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// Make sure the content type was set
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assert_eq!(r.headers.get::<ContentType>(),
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Some(&ContentType::form_url_encoded()));
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let buf = body::read_to_string(r.body.unwrap()).unwrap();
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let body_should_be = serde_urlencoded::to_string(&form_data).unwrap();
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assert_eq!(buf, body_should_be);
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}
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#[test]
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fn add_json() {
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let client = Client::new().unwrap();
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let some_url = "https://google.com/";
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let mut r = client.post(some_url).unwrap();
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let mut json_data = HashMap::new();
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json_data.insert("foo", "bar");
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let r = r.json(&json_data).unwrap().build();
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// Make sure the content type was set
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assert_eq!(r.headers.get::<ContentType>(), Some(&ContentType::json()));
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let buf = body::read_to_string(r.body.unwrap()).unwrap();
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let body_should_be = serde_json::to_string(&json_data).unwrap();
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assert_eq!(buf, body_should_be);
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}
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#[test]
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fn add_json_fail() {
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use serde::{Serialize, Serializer};
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use serde::ser::Error;
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struct MyStruct;
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impl Serialize for MyStruct {
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fn serialize<S>(&self, _serializer: S) -> Result<S::Ok, S::Error>
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where S: Serializer
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{
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Err(S::Error::custom("nope"))
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}
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}
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let client = Client::new().unwrap();
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let some_url = "https://google.com/";
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let mut r = client.post(some_url).unwrap();
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let json_data = MyStruct{};
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assert!(r.json(&json_data).unwrap_err().is_serialization());
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}
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*/
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}
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