body on its own command

examples/api/src/views/Http.svelte

@@ -12,20 +12,33 @@
 
     const options = {
       method: method || "GET",
+      headers: {},
     };
 
-    if (
-      (httpBody.startsWith("{") && httpBody.endsWith("}")) ||
-      (httpBody.startsWith("[") && httpBody.endsWith("]"))
-    ) {
-      options.body = JSON.parse(httpBody);
-    } else if (httpBody !== "") {
+    let bodyType;
+
+    if (method !== "GET") {
       options.body = httpBody;
+
+      if (
+        (httpBody.startsWith("{") && httpBody.endsWith("}")) ||
+        (httpBody.startsWith("[") && httpBody.endsWith("]"))
+      ) {
+        options.headers["Content-Type"] = "application/json";
+        bodyType = "json";
+      } else if (httpBody !== "") {
+        bodyType = "text";
+      }
     }
 
-    tauriFetch("http://localhost:3003", options)
-      .then(onMessage)
-      .catch(onMessage);
+    const response = await tauriFetch("http://localhost:3003", options);
+    const body =
+      bodyType === "json" ? await response.json() : await response.text();
+    onMessage({
+      url: response.url,
+      status: response.status,
+      body,
+    });
   }
 
   /// http form
@@ -46,9 +59,10 @@
         : undefined,
     });
     result = {
+      url: response.url,
       status: response.status,
       headers: JSON.parse(JSON.stringify(response.headers)),
-      body: response.body,
+      body: await response.text(),
     };
   }
 </script>

plugins/http/guest-js/index.ts

@@ -30,6 +30,51 @@ declare global {
   }
 }
 
+async function readBody<T>(rid: number, kind: "blob" | "text"): Promise<T> {
+  return await window.__TAURI_INVOKE__("plugin:http|fetch_read_body", {
+    rid,
+    kind
+  });
+}
+
+class TauriResponse extends Response {
+  _rid: number = 0
+
+  blob(): Promise<Blob> {
+    return readBody<Uint8Array>(this._rid, "blob").then(bytes => new Blob([bytes], { type: this.headers.get("content-type") || "application/octet-stream" }))
+  }
+
+  json(): Promise<any> {
+    return readBody<string>(this._rid, "text").then(data => {
+      try {
+        return JSON.parse(data);
+      } catch (e) {
+        if (this.ok && data === "") {
+          return {};
+        } else if (this.ok) {
+          throw Error(
+            `Failed to parse response \`${data}\` as JSON: ${e}`
+          );
+        }
+      }
+    })
+  }
+
+  formData(): Promise<FormData> {
+    return this.json().then((json: Record<string, string | Blob>) => {
+      const form = new FormData()
+      for (const [key, value] of Object.entries(json)) {
+        form.append(key, value)
+      }
+      return form
+    })
+  }
+
+  text(): Promise<string> {
+    return readBody(this._rid, "text")
+  }
+}
+
 /**
  * Options to configure the Rust client used to make fetch requests
  *
@@ -62,7 +107,7 @@ export interface ClientOptions {
 export async function fetch(
   input: URL | Request | string,
   init?: RequestInit & ClientOptions
-): Promise<Response> {
+): Promise<TauriResponse> {
   const maxRedirections = init?.maxRedirections;
   const connectTimeout = init?.maxRedirections;
 
@@ -96,22 +141,21 @@ export async function fetch(
     status: number;
     statusText: string;
     headers: [[string, string]];
-    data: number[];
     url: string;
   }
 
-  const { status, statusText, url, headers, data } =
+  const { status, statusText, url, headers } =
     await window.__TAURI_INVOKE__<FetchSendResponse>("plugin:http|fetch_send", {
       rid,
     });
-  console.log(status, url, headers, data)
 
-  const res = new Response(Uint8Array.from(data), {
+  const res = new TauriResponse(null, {
     headers,
     status,
     statusText,
   });
-
+  res._rid = rid;
+  // url is read only but seems like we can do this
   Object.defineProperty(res, "url", { value: url });
 
   return res;

plugins/http/src/api-iife.js

@@ -1 +1 @@
-if("__TAURI__"in window){var __TAURI_HTTP__=function(e){"use strict";return e.fetch=async function(e,t){const n=null==t?void 0:t.maxRedirections,r=null==t?void 0:t.maxRedirections;t&&(delete t.maxRedirections,delete t.connectTimeout);const i=new Request(e,t),a=await i.arrayBuffer(),_=a.byteLength?Array.from(new Uint8Array(a)):null,o=await window.__TAURI_INVOKE__("plugin:http|fetch",{cmd:"fetch",method:i.method,url:i.url,headers:Array.from(i.headers.entries()),data:_,maxRedirections:n,connectTimeout:r});i.signal.addEventListener("abort",(()=>{window.__TAURI_INVOKE__("plugin:http|fetch_cancel",{rid:o})}));const{status:s,statusText:d,url:c,headers:u,data:l}=await window.__TAURI_INVOKE__("plugin:http|fetch_send",{rid:o});console.log(s,c,u,l);const h=new Response(Uint8Array.from(l),{headers:u,status:s,statusText:d});return Object.defineProperty(h,"url",{value:c}),h},e}({});Object.defineProperty(window.__TAURI__,"http",{value:__TAURI_HTTP__})}
+if("__TAURI__"in window){var __TAURI_HTTP__=function(t){"use strict";async function e(t,e){return await window.__TAURI_INVOKE__("plugin:http|fetch_read_body",{rid:t,kind:e})}class r extends Response{constructor(){super(...arguments),this._rid=0}blob(){return e(this._rid,"blob").then((t=>new Blob([t],{type:this.headers.get("content-type")||"application/octet-stream"})))}json(){return e(this._rid,"text").then((t=>{try{return JSON.parse(t)}catch(e){if(this.ok&&""===t)return{};if(this.ok)throw Error(`Failed to parse response \`${t}\` as JSON: ${e}`)}}))}formData(){return this.json().then((t=>{const e=new FormData;for(const[r,n]of Object.entries(t))e.append(r,n);return e}))}text(){return e(this._rid,"text")}}return t.fetch=async function(t,e){const n=null==e?void 0:e.maxRedirections,i=null==e?void 0:e.maxRedirections;e&&(delete e.maxRedirections,delete e.connectTimeout);const s=new Request(t,e),o=await s.arrayBuffer(),a=o.byteLength?Array.from(new Uint8Array(o)):null,_=await window.__TAURI_INVOKE__("plugin:http|fetch",{cmd:"fetch",method:s.method,url:s.url,headers:Array.from(s.headers.entries()),data:a,maxRedirections:n,connectTimeout:i});s.signal.addEventListener("abort",(()=>{window.__TAURI_INVOKE__("plugin:http|fetch_cancel",{rid:_})}));const{status:d,statusText:c,url:u,headers:h}=await window.__TAURI_INVOKE__("plugin:http|fetch_send",{rid:_}),l=new r(null,{headers:h,status:d,statusText:c});return l._rid=_,Object.defineProperty(l,"url",{value:u}),l},t}({});Object.defineProperty(window.__TAURI__,"http",{value:__TAURI_HTTP__})}

plugins/http/src/commands.rs

@@ -2,16 +2,60 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-License-Identifier: MIT
 
-use std::{collections::HashMap, time::Duration};
+use std::{collections::HashMap, str::FromStr, time::Duration};
 
 use http::{header, HeaderName, HeaderValue, Method, StatusCode};
 use reqwest::redirect::Policy;
+use serde::{de::Deserializer, Deserialize, Serialize};
 use tauri::{command, AppHandle, Runtime};
 
-use crate::{Error, FetchRequest, FetchResponse, HttpExt, RequestId};
+use crate::{Error, FetchRequest, HttpExt, RequestId};
+
+#[derive(Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct FetchResponse {
+    status: u16,
+    status_text: String,
+    headers: Vec<(String, String)>,
+    url: String,
+}
+
+#[derive(Serialize)]
+#[serde(untagged)]
+pub enum ResponseBody {
+    Blob(Vec<u8>),
+    Text(String),
+}
+
+pub enum BodyKind {
+    Blob,
+    Text,
+}
+
+impl FromStr for BodyKind {
+    type Err = &'static str;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        match s.to_lowercase().as_str() {
+            "blob" => Ok(Self::Blob),
+            "text" => Ok(Self::Text),
+            _ => Err("unknown body kind"),
+        }
+    }
+}
+
+impl<'de> Deserialize<'de> for BodyKind {
+    fn deserialize<D>(deserializer: D) -> std::result::Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let kind = String::deserialize(deserializer)?;
+        kind.parse().map_err(serde::de::Error::custom)
+    }
+}
 
 #[command]
-pub(crate) async fn fetch<R: Runtime>(
+pub async fn fetch<R: Runtime>(
     app: AppHandle<R>,
     method: String,
     url: url::Url,
@@ -109,10 +153,7 @@ pub(crate) async fn fetch<R: Runtime>(
 }
 
 #[command]
-pub(crate) async fn fetch_cancel<R: Runtime>(
-    app: AppHandle<R>,
-    rid: RequestId,
-) -> crate::Result<()> {
+pub async fn fetch_cancel<R: Runtime>(app: AppHandle<R>, rid: RequestId) -> crate::Result<()> {
     let mut request_table = app.http().requests.lock().await;
     let req = request_table
         .get_mut(&rid)
@@ -122,7 +163,7 @@ pub(crate) async fn fetch_cancel<R: Runtime>(
 }
 
 #[command]
-pub(crate) async fn fetch_send<R: Runtime>(
+pub async fn fetch_send<R: Runtime>(
     app: AppHandle<R>,
     rid: RequestId,
 ) -> crate::Result<FetchResponse> {
@@ -146,11 +187,30 @@ pub(crate) async fn fetch_send<R: Runtime>(
         ));
     }
 
+    app.http().responses.lock().await.insert(rid, res);
+
     Ok(FetchResponse {
         status: status.as_u16(),
         status_text: status.canonical_reason().unwrap_or_default().to_string(),
         headers,
         url,
-        data: res.bytes().await?.to_vec(),
     })
 }
+
+// TODO: change return value to tauri::ipc::Response on next alpha
+#[command]
+pub(crate) async fn fetch_read_body<R: Runtime>(
+    app: AppHandle<R>,
+    rid: RequestId,
+    kind: BodyKind,
+) -> crate::Result<ResponseBody> {
+    let mut response_table = app.http().responses.lock().await;
+    let res = response_table
+        .remove(&rid)
+        .ok_or(Error::InvalidRequestId(rid))?;
+
+    match kind {
+        BodyKind::Blob => Ok(ResponseBody::Blob(res.bytes().await?.to_vec())),
+        BodyKind::Text => Ok(ResponseBody::Text(res.text().await?)),
+    }
+}

plugins/http/src/lib.rs

@@ -10,7 +10,7 @@ use std::sync::atomic::AtomicU32;
 use std::{collections::HashMap, future::Future, pin::Pin};
 
 pub use reqwest;
-use serde::Serialize;
+use reqwest::Response;
 use tauri::async_runtime::Mutex;
 use tauri::{
     plugin::{Builder, TauriPlugin},
@@ -30,6 +30,7 @@ type CancelableResponseResult = Result<Result<reqwest::Response>>;
 type CancelableResponseFuture =
     Pin<Box<dyn Future<Output = CancelableResponseResult> + Send + Sync>>;
 type RequestTable = HashMap<RequestId, FetchRequest>;
+type ResponseTable = HashMap<RequestId, Response>;
 
 struct FetchRequest(Mutex<CancelableResponseFuture>);
 impl FetchRequest {
@@ -38,22 +39,13 @@ impl FetchRequest {
     }
 }
 
-#[derive(Serialize)]
-#[serde(rename_all = "camelCase")]
-struct FetchResponse {
-    status: u16,
-    status_text: String,
-    headers: Vec<(String, String)>,
-    url: String,
-    data: Vec<u8>,
-}
-
 struct Http<R: Runtime> {
     #[allow(dead_code)]
     app: AppHandle<R>,
     scope: scope::Scope,
     current_id: AtomicU32,
     requests: Mutex<RequestTable>,
+    responses: Mutex<ResponseTable>,
 }
 
 impl<R: Runtime> Http<R> {
@@ -80,6 +72,7 @@ pub fn init<R: Runtime>() -> TauriPlugin<R, Option<Config>> {
             commands::fetch,
             commands::fetch_cancel,
             commands::fetch_send,
+            commands::fetch_read_body,
         ])
         .setup(|app, api| {
             let default_scope = HttpAllowlistScope::default();
@@ -87,6 +80,7 @@ pub fn init<R: Runtime>() -> TauriPlugin<R, Option<Config>> {
                 app: app.clone(),
                 current_id: 0.into(),
                 requests: Default::default(),
+                responses: Default::default(),
                 scope: scope::Scope::new(
                     api.config()
                         .as_ref()