Introduces HeaderVec struct to represent a list of HTTP headers.

packages/hurl/src/http/client.rs

@@ -29,6 +29,9 @@ use url::Url;
 
 use crate::http::certificate::Certificate;
 use crate::http::core::*;
+use crate::http::header::{
+    HeaderVec, ACCEPT_ENCODING, AUTHORIZATION, CONTENT_TYPE, EXPECT, USER_AGENT,
+};
 use crate::http::options::ClientOptions;
 use crate::http::request::*;
 use crate::http::request_spec::*;
@@ -164,7 +167,7 @@ impl Client {
         let start = Utc::now();
         let verbose = options.verbosity.is_some();
         let very_verbose = options.verbosity == Some(Verbosity::VeryVerbose);
-        let mut request_headers: Vec<Header> = vec![];
+        let mut request_headers = HeaderVec::new();
         let mut status_lines = vec![];
         let mut response_headers = vec![];
         let has_body_data = !request_spec.body.bytes().is_empty()
@@ -523,15 +526,15 @@ impl Client {
         }
 
         // If request has no Content-Type header, we set it if the content type has been set explicitly on this request.
-        if request.get_header_values(Header::CONTENT_TYPE).is_empty() {
+        if request.get_header_values(CONTENT_TYPE).is_empty() {
             if let Some(s) = &request.content_type {
-                list.append(&format!("{}: {s}", Header::CONTENT_TYPE))?;
+                list.append(&format!("{}: {s}", CONTENT_TYPE))?;
             } else {
                 // We remove default Content-Type headers added by curl because we want
                 // to explicitly manage this header.
                 // For instance, with --data option, curl will send a 'Content-type: application/x-www-form-urlencoded'
                 // header.
-                list.append(&format!("{}:", Header::CONTENT_TYPE))?;
+                list.append(&format!("{}:", CONTENT_TYPE))?;
             }
         }
 
@@ -539,18 +542,18 @@ impl Client {
         // libcurl will generate `SignedHeaders` that include `expect` even though the header is not
         // present, causing some APIs to reject the request.
         // Therefore we only remove this header when not in aws_sigv4 mode.
-        if request.get_header_values(Header::EXPECT).is_empty() && options.aws_sigv4.is_none() {
+        if request.get_header_values(EXPECT).is_empty() && options.aws_sigv4.is_none() {
             // We remove default Expect headers added by curl because we want
             // to explicitly manage this header.
-            list.append(&format!("{}:", Header::EXPECT))?;
+            list.append(&format!("{}:", EXPECT))?;
         }
 
-        if request.get_header_values(Header::USER_AGENT).is_empty() {
+        if request.get_header_values(USER_AGENT).is_empty() {
             let user_agent = match options.user_agent {
                 Some(ref u) => u.clone(),
                 None => format!("hurl/{}", clap::crate_version!()),
             };
-            list.append(&format!("{}: {user_agent}", Header::USER_AGENT))?;
+            list.append(&format!("{}: {user_agent}", USER_AGENT))?;
         }
 
         if let Some(ref user) = options.user {
@@ -565,17 +568,13 @@ impl Client {
             } else {
                 let user = user.as_bytes();
                 let authorization = general_purpose::STANDARD.encode(user);
-                if request.get_header_values(Header::AUTHORIZATION).is_empty() {
-                    list.append(&format!("{}: Basic {authorization}", Header::AUTHORIZATION))?;
+                if request.get_header_values(AUTHORIZATION).is_empty() {
+                    list.append(&format!("{}: Basic {authorization}", AUTHORIZATION))?;
                 }
             }
         }
-        if options.compressed
-            && request
-                .get_header_values(Header::ACCEPT_ENCODING)
-                .is_empty()
-        {
-            list.append(&format!("{}: gzip, deflate, br", Header::ACCEPT_ENCODING))?;
+        if options.compressed && request.get_header_values(ACCEPT_ENCODING).is_empty() {
+            list.append(&format!("{}: gzip, deflate, br", ACCEPT_ENCODING))?;
         }
 
         self.handle.http_headers(list)?;

packages/hurl/src/http/header.rs

@@ -16,6 +16,14 @@
  *
  */
 use core::fmt;
+use std::slice::Iter;
+
+pub const ACCEPT_ENCODING: &str = "Accept-Encoding";
+pub const AUTHORIZATION: &str = "Authorization";
+pub const COOKIE: &str = "Cookie";
+pub const CONTENT_TYPE: &str = "Content-Type";
+pub const EXPECT: &str = "Expect";
+pub const USER_AGENT: &str = "User-Agent";
 
 /// Represents an HTTP header
 #[derive(Clone, Debug, PartialEq, Eq)]
@@ -31,12 +39,6 @@ impl fmt::Display for Header {
 }
 
 impl Header {
-    pub const ACCEPT_ENCODING: &'static str = "Accept-Encoding";
-    pub const AUTHORIZATION: &'static str = "Authorization";
-    pub const CONTENT_TYPE: &'static str = "Content-Type";
-    pub const EXPECT: &'static str = "Expect";
-    pub const USER_AGENT: &'static str = "User-Agent";
-
     pub fn new(name: &str, value: &str) -> Self {
         Header {
             name: name.to_string(),
@@ -58,3 +60,118 @@ pub fn get_values(headers: &[Header], name: &str) -> Vec<String> {
         })
         .collect()
 }
+
+/// Represents an ordered list of [`Header`].
+/// The headers are sorted by insertion order.
+#[derive(Clone, Debug, Default, PartialEq, Eq)]
+pub struct HeaderVec {
+    headers: Vec<Header>,
+}
+
+impl HeaderVec {
+    /// Creates an empty [`HeaderVec`].
+    pub fn new() -> Self {
+        HeaderVec::default()
+    }
+
+    /// Returns a reference to the header associated with `name`.
+    ///
+    /// If there are multiple headers associated with `name`, then the first one is returned.
+    /// Use [`get_all`] to get all values associated with a given key.
+    pub fn get(&self, name: &str) -> Option<&Header> {
+        self.headers
+            .iter()
+            .find(|h| h.name.to_lowercase() == name.to_lowercase())
+    }
+
+    /// Returns a list of header associated with `name`.
+    pub fn get_all(&self, name: &str) -> Vec<&Header> {
+        self.headers
+            .iter()
+            .filter(|h| h.name.to_lowercase() == name.to_lowercase())
+            .collect()
+    }
+
+    /// Returns an iterator over all the headers.
+    pub fn iter(&self) -> impl Iterator<Item = &Header> {
+        self.headers.iter()
+    }
+
+    /// Returns the number of headers stored in the list.
+    ///
+    /// This number represents the total numbers of header, including header with the same name and
+    /// different values.
+    pub fn len(&self) -> usize {
+        self.headers.len()
+    }
+
+    /// Push a new `header` into the headers list.
+    pub fn push(&mut self, header: Header) {
+        self.headers.push(header)
+    }
+}
+
+impl<'a> IntoIterator for &'a HeaderVec {
+    type Item = &'a Header;
+    type IntoIter = Iter<'a, Header>;
+
+    fn into_iter(self) -> Self::IntoIter {
+        self.headers.iter()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::http::header::HeaderVec;
+    use crate::http::Header;
+
+    #[test]
+    fn test_simple_header_map() {
+        let mut headers = HeaderVec::new();
+        headers.push(Header::new("foo", "xxx"));
+        headers.push(Header::new("bar", "yyy0"));
+        headers.push(Header::new("bar", "yyy1"));
+        headers.push(Header::new("bar", "yyy2"));
+        headers.push(Header::new("baz", "zzz"));
+
+        assert_eq!(headers.len(), 5);
+
+        assert_eq!(headers.get("foo"), Some(&Header::new("foo", "xxx")));
+        assert_eq!(headers.get("FOO"), Some(&Header::new("foo", "xxx")));
+        assert_eq!(headers.get("bar"), Some(&Header::new("bar", "yyy0")));
+        assert_eq!(headers.get("qux"), None);
+
+        assert_eq!(
+            headers.get_all("bar"),
+            vec![
+                &Header::new("bar", "yyy0"),
+                &Header::new("bar", "yyy1"),
+                &Header::new("bar", "yyy2"),
+            ]
+        );
+        assert_eq!(headers.get_all("BAZ"), vec![&Header::new("baz", "zzz")]);
+        assert_eq!(headers.get_all("qux"), Vec::<&Header>::new());
+    }
+
+    #[test]
+    fn test_iter() {
+        let data = vec![("foo", "xxx"), ("bar", "yyy0"), ("baz", "yyy1")];
+        let mut headers = HeaderVec::new();
+        data.iter()
+            .for_each(|(name, value)| headers.push(Header::new(name, value)));
+
+        // Test iter()
+        for (i, h) in headers.iter().enumerate() {
+            assert_eq!(h.name, data[i].0);
+            assert_eq!(h.value, data[i].1)
+        }
+
+        // Test into_iter()
+        let mut i = 0;
+        for h in &headers {
+            assert_eq!(h.name, data[i].0);
+            assert_eq!(h.value, data[i].1);
+            i += 1;
+        }
+    }
+}

packages/hurl/src/http/mod.rs

@@ -21,7 +21,9 @@ pub(crate) use self::client::Client;
 pub use self::cookie::{CookieAttribute, ResponseCookie};
 pub(crate) use self::core::{Cookie, Param, RequestCookie};
 pub(crate) use self::error::HttpError;
-pub use self::header::Header;
+pub use self::header::{
+    Header, ACCEPT_ENCODING, AUTHORIZATION, CONTENT_TYPE, COOKIE, EXPECT, USER_AGENT,
+};
 pub(crate) use self::options::{ClientOptions, Verbosity};
 pub use self::request::{IpResolve, Request, RequestedHttpVersion};
 pub(crate) use self::request_spec::{Body, FileParam, Method, MultipartParam, RequestSpec};

packages/hurl/src/http/request.rs

@@ -20,7 +20,8 @@ use std::fmt;
 use url::Url;
 
 use crate::http::core::*;
-use crate::http::{header, Header, HttpError};
+use crate::http::header::{HeaderVec, CONTENT_TYPE, COOKIE};
+use crate::http::HttpError;
 
 /// Represents a runtime HTTP request.
 /// This is a real request, that has been executed by our HTTP client.
@@ -31,7 +32,7 @@ use crate::http::{header, Header, HttpError};
 pub struct Request {
     pub url: String,
     pub method: String,
-    pub headers: Vec<Header>,
+    pub headers: HeaderVec,
     pub body: Vec<u8>,
 }
 
@@ -68,7 +69,7 @@ pub enum IpResolve {
 
 impl Request {
     /// Creates a new request.
-    pub fn new(method: &str, url: &str, headers: Vec<Header>, body: Vec<u8>) -> Self {
+    pub fn new(method: &str, url: &str, headers: HeaderVec, body: Vec<u8>) -> Self {
         Request {
             url: url.to_string(),
             method: method.to_string(),
@@ -96,17 +97,15 @@ impl Request {
     /// see <https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cookie>
     pub fn cookies(&self) -> Vec<RequestCookie> {
         self.headers
+            .get_all(COOKIE)
             .iter()
-            .filter(|h| h.name.as_str() == "Cookie")
             .flat_map(|h| parse_cookies(h.value.as_str().trim()))
             .collect()
     }
 
     /// Returns optional Content-type header value.
-    pub fn content_type(&self) -> Option<String> {
-        header::get_values(&self.headers, Header::CONTENT_TYPE)
-            .first()
-            .cloned()
+    pub fn content_type(&self) -> Option<&str> {
+        self.headers.get(CONTENT_TYPE).map(|h| h.value.as_str())
     }
 
     /// Returns the base url http(s)://host(:port)
@@ -152,32 +151,26 @@ fn parse_cookie(s: &str) -> RequestCookie {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::http::RequestCookie;
+    use crate::http::{Header, RequestCookie};
 
     fn hello_request() -> Request {
-        Request::new(
-            "GET",
-            "http://localhost:8000/hello",
-            vec![
-                Header::new("Host", "localhost:8000"),
-                Header::new("Accept", "*/*"),
-                Header::new("User-Agent", "hurl/1.0"),
-            ],
-            vec![],
-        )
+        let mut headers = HeaderVec::new();
+        headers.push(Header::new("Host", "localhost:8000"));
+        headers.push(Header::new("Accept", "*/*"));
+        headers.push(Header::new("User-Agent", "hurl/1.0"));
+        headers.push(Header::new("content-type", "application/json"));
+
+        Request::new("GET", "http://localhost:8000/hello", headers, vec![])
     }
 
     fn query_string_request() -> Request {
-        Request::new("GET", "http://localhost:8000/querystring-params?param1=value1&param2=&param3=a%3Db&param4=1%2C2%2C3", vec![], vec![])
+        Request::new("GET", "http://localhost:8000/querystring-params?param1=value1&param2=&param3=a%3Db&param4=1%2C2%2C3", HeaderVec::new(), vec![])
     }
 
     fn cookies_request() -> Request {
-        Request::new(
-            "GET",
-            "http://localhost:8000/cookies",
-            vec![Header::new("Cookie", "cookie1=value1; cookie2=value2")],
-            vec![],
-        )
+        let mut headers = HeaderVec::new();
+        headers.push(Header::new("Cookie", "cookie1=value1; cookie2=value2"));
+        Request::new("GET", "http://localhost:8000/cookies", headers, vec![])
     }
 
     #[test]
@@ -206,6 +199,13 @@ mod tests {
         )
     }
 
+    #[test]
+    fn test_content_type() {
+        assert_eq!(hello_request().content_type(), Some("application/json"));
+        assert_eq!(query_string_request().content_type(), None);
+        assert_eq!(cookies_request().content_type(), None);
+    }
+
     #[test]
     fn test_cookies() {
         assert!(hello_request().cookies().is_empty());
@@ -255,7 +255,7 @@ mod tests {
     #[test]
     fn test_base_url() {
         assert_eq!(
-            Request::new("", "http://localhost", vec![], vec![])
+            Request::new("", "http://localhost", HeaderVec::new(), vec![])
                 .base_url()
                 .unwrap(),
             "http://localhost".to_string()
@@ -264,7 +264,7 @@ mod tests {
             Request::new(
                 "",
                 "http://localhost:8000/redirect-relative",
-                vec![],
+                HeaderVec::new(),
                 vec![]
             )
             .base_url()
@@ -272,7 +272,7 @@ mod tests {
             "http://localhost:8000".to_string()
         );
         assert_eq!(
-            Request::new("", "https://localhost:8000", vec![], vec![])
+            Request::new("", "https://localhost:8000", HeaderVec::new(), vec![])
                 .base_url()
                 .unwrap(),
             "https://localhost:8000".to_string()

packages/hurl/src/http/request_debug.rs

@@ -27,7 +27,7 @@ impl Request {
         // If it ok, we print each line of the body in debug format. Otherwise, we
         // print the body first 64 bytes.
         if let Some(content_type) = self.content_type() {
-            if !mimetype::is_kind_of_text(&content_type) {
+            if !mimetype::is_kind_of_text(content_type) {
                 debug::log_bytes(&self.body, 64, debug, logger);
                 return;
             }

packages/hurl/src/http/request_decoding.rs

@@ -23,7 +23,7 @@ impl Request {
     /// Returns character encoding of the HTTP request.
     fn character_encoding(&self) -> Result<EncodingRef, HttpError> {
         match self.content_type() {
-            Some(content_type) => match mimetype::charset(&content_type) {
+            Some(content_type) => match mimetype::charset(content_type) {
                 Some(charset) => {
                     match encoding::label::encoding_from_whatwg_label(charset.as_str()) {
                         None => Err(HttpError::InvalidCharset { charset }),

packages/hurl/src/http/request_spec_curl_args.rs

@@ -18,6 +18,7 @@
 use std::collections::HashMap;
 
 use crate::http::core::*;
+use crate::http::header::CONTENT_TYPE;
 use crate::http::{RequestSpec, *};
 use crate::util::path::ContextDir;
 
@@ -39,31 +40,28 @@ impl RequestSpec {
             .headers
             .iter()
             .map(|h| &h.name)
-            .any(|n| n.as_str() == Header::CONTENT_TYPE);
+            .any(|n| n.as_str() == CONTENT_TYPE);
         if !has_explicit_content_type {
             if let Some(content_type) = &self.content_type {
                 if content_type.as_str() != "application/x-www-form-urlencoded"
                     && content_type.as_str() != "multipart/form-data"
                 {
                     arguments.push("--header".to_string());
-                    arguments.push(format!("'{}: {content_type}'", Header::CONTENT_TYPE));
+                    arguments.push(format!("'{}: {content_type}'", CONTENT_TYPE));
                 }
             } else if !self.body.bytes().is_empty() {
                 match self.body {
                     Body::Text(_) => {
                         arguments.push("--header".to_string());
-                        arguments.push(format!("'{}:'", Header::CONTENT_TYPE))
+                        arguments.push(format!("'{}:'", CONTENT_TYPE))
                     }
                     Body::Binary(_) => {
                         arguments.push("--header".to_string());
-                        arguments.push(format!(
-                            "'{}: application/octet-stream'",
-                            Header::CONTENT_TYPE
-                        ))
+                        arguments.push(format!("'{}: application/octet-stream'", CONTENT_TYPE))
                     }
                     Body::File(_, _) => {
                         arguments.push("--header".to_string());
-                        arguments.push(format!("'{}:'", Header::CONTENT_TYPE))
+                        arguments.push(format!("'{}:'", CONTENT_TYPE))
                     }
                 }
             }

packages/hurl/src/http/response.rs

@@ -19,6 +19,7 @@ use std::fmt;
 use std::time::Duration;
 
 use crate::http::certificate::Certificate;
+use crate::http::header::CONTENT_TYPE;
 use crate::http::{header, Header};
 
 /// Represents a runtime HTTP response.
@@ -78,7 +79,7 @@ impl Response {
 
     /// Returns optional Content-type header value.
     pub fn content_type(&self) -> Option<String> {
-        header::get_values(&self.headers, Header::CONTENT_TYPE)
+        header::get_values(&self.headers, CONTENT_TYPE)
             .first()
             .cloned()
     }

packages/hurl/src/runner/request.rs

@@ -22,6 +22,7 @@ use base64::Engine;
 use hurl_core::ast::*;
 
 use crate::http;
+use crate::http::AUTHORIZATION;
 use crate::runner::body::eval_body;
 use crate::runner::error::Error;
 use crate::runner::multipart::eval_multipart_param;
@@ -55,7 +56,7 @@ pub fn eval_request(
         let user_password = user_password.as_bytes();
         let authorization = general_purpose::STANDARD.encode(user_password);
         let value = format!("Basic {authorization}");
-        let header = http::Header::new(http::Header::AUTHORIZATION, &value);
+        let header = http::Header::new(AUTHORIZATION, &value);
         headers.push(header);
     }