Upload a file

HTTP upload file usually use the multipart/form-data content type or send the file as a binary data.

• Send a file as a multipart form data
• Send a file as a binary data

Send a file as multipart form data

use std.{fs, net.http.client.{HttpClient, Multipart, Request}};
use std.net.http.OK;

fn main() throws {
    let f = try fs.open("main.nv");

    let client = HttpClient.new();
    let multipart = Multipart.new();
    multipart.append(f, name: "file");

    let req = try Request.post("https://httpbin.org/post").set_multipart(multipart);
    let res = try client.request(req);
    if (res.status() != OK) {
        println("Failed to upload file", try res.text());
        return;
    }

    println(try res.text());
}

After run navi run main.nv will output:

{
  "args": {},
  "data": "",
  "files": {},
  "form": {
    "file": "use std.{fs, net.http.{client.{HttpClient, Multipart, Request}, OK}};\n\nfn main() throws {\n    let f = try fs.open(\"main.nv\");\n\n    let client = HttpClient.new();\n    let multipart = Multipart.new();\n    multipart.append(f, name: \"file\");\n\n    let req = try Request.post(\"https://httpbin.org/post\").set_multipart(multipart);\n    let res = try client.request(req);\n    if (res.status() != OK) {\n        println(\"Failed to upload file\", try res.text());\n        return;\n    }\n\n    println(try res.text());\n}\n"
  },
  "headers": {
    "Content-Type": "multipart/form-data; boundary=12e2cc00691db990-e67f0a357c8ef09c-b5c1423f5cda1185-5de81a96447ef53b",
    "Host": "httpbin.org",
    "Transfer-Encoding": "chunked",
    "X-Amzn-Trace-Id": "Root=1-66f4b2c6-3f33559f6312c84e0e7d350a"
  },
  "json": null,
  "origin": "8.223.23.31",
  "url": "https://httpbin.org/post"
}

In this case, we open the file using the fs.open function and pass the file object to the Multipart.append method to append the file to the multipart form data. Then we set the multipart form data to the request using the Request.set_multipart method.

Send a file as a binary data

Sometimes, the HTTP server may only accept the file as a binary data, you can use the File type to read the file and send it as a binary data.

use std.{fs, net.http.client.{HttpClient, Request}};
use std.net.http.OK;

fn main() throws {
    let f = try fs.open("main.nv");

    let client = HttpClient.new();
    let req = try Request.post("https://httpbin.org/post").set_body(f);
    let res = try client.request(req);
    if (res.status() != OK) {
        println("Failed to upload file", try res.text());
        return;
    }

    println(try res.text());
}

After navi run above code, the output will be:

{
  "args": {},
  "data": "use std.{fs, net.http.{client.{HttpClient, Request}, OK}};\n\nfn main() throws {\n    let f = try fs.open(\"main.nv\");\n\n    let client = HttpClient.new();\n    let req = try Request.post(\"https://httpbin.org/post\").set_body(f);\n    let res = try client.request(req);\n    if (res.status() != OK) {\n        println(\"Failed to upload file\", try res.text());\n        return;\n    }\n\n    println(try res.text());\n}\n",
  "files": {},
  "form": {},
  "headers": {
    "Host": "httpbin.org",
    "Transfer-Encoding": "chunked",
    "X-Amzn-Trace-Id": "Root=1-66f4b331-00ee4e0327d0088e3ac596a2"
  },
  "json": null,
  "origin": "8.223.23.31",
  "url": "https://httpbin.org/post"
}

In this case, we open the file using the fs.open function and pass the file object to the Request.set_body method to set the file as the request body.