| 1 |
@page "/Send" |
| 2 |
@using System.Text.Json |
| 3 |
@using Blog.Services |
| 4 |
@using Microsoft.Extensions.Options |
| 5 |
@inject IOptions<SendOptions> Options |
| 6 |
|
| 7 |
<PageTitle>Send</PageTitle> |
| 8 |
<script type="module" src="@Assets["Components/Pages/Send.razor.js"]"></script> |
| 9 |
|
| 10 |
<main> |
| 11 |
<h1>Send</h1> |
| 12 |
|
| 13 |
<p> |
| 14 |
Send a file to another browser. Open this page in both, pair them with the link or the |
| 15 |
code, and the file goes straight from one to the other. |
| 16 |
</p> |
| 17 |
|
| 18 |
@* The ICE servers are configuration, so the page carries them rather than the script |
| 19 |
hard-coding them. A data attribute rather than a <script type="application/json"> block: |
| 20 |
Razor HTML-encodes element content, and attribute encoding round-trips through JSON.parse. *@ |
| 21 |
<div id="ice" data-servers="@IceServers" hidden></div> |
| 22 |
|
| 23 |
<Panel Legend="Connection"> |
| 24 |
<p id="state">Starting…</p> |
| 25 |
|
| 26 |
@* Put away once the room has its two browsers: the link is no use to a third. *@ |
| 27 |
<div id="pairing"> |
| 28 |
<div class="flex-row"> |
| 29 |
<label for="link">Link</label> |
| 30 |
<input type="text" id="link" readonly/> |
| 31 |
<button type="button" id="copy">Copy</button> |
| 32 |
</div> |
| 33 |
|
| 34 |
<p>…or read out the code: <strong id="code"></strong></p> |
| 35 |
|
| 36 |
<div id="qrcode"></div> |
| 37 |
</div> |
| 38 |
|
| 39 |
<form id="joinForm" class="flex-row"> |
| 40 |
<label for="joinCode">Been given a code?</label> |
| 41 |
<input type="text" id="joinCode" placeholder="ABCD-EFGH-JKMN" autocomplete="off" |
| 42 |
spellcheck="false"/> |
| 43 |
<button type="submit">Join</button> |
| 44 |
</form> |
| 45 |
</Panel> |
| 46 |
|
| 47 |
<Panel Legend="Sending"> |
| 48 |
<div id="drop" class="dropzone"> |
| 49 |
<input type="file" id="files" multiple disabled/> |
| 50 |
<p>…or drop files here.</p> |
| 51 |
</div> |
| 52 |
<ul id="outgoing" class="transfers"></ul> |
| 53 |
</Panel> |
| 54 |
|
| 55 |
<Panel Legend="Received"> |
| 56 |
<ul id="incoming" class="transfers"></ul> |
| 57 |
<p id="nothingYet">Nothing yet.</p> |
| 58 |
</Panel> |
| 59 |
|
| 60 |
<Panel Legend="How this works"> |
| 61 |
<p> |
| 62 |
<a href="https://developer.mozilla.org/en-US/docs/Web/API/WebRTC_API" |
| 63 |
rel="external noreferrer">WebRTC</a> is the browser's own way of opening a |
| 64 |
connection straight to another browser. The two ends swap what they know about how |
| 65 |
to reach each other, settle on a route, and from then on talk directly — on a shared |
| 66 |
network, over the local one. The file is read off disk in chunks and written down |
| 67 |
that connection. |
| 68 |
</p> |
| 69 |
</Panel> |
| 70 |
|
| 71 |
<Log/> |
| 72 |
</main> |
| 73 |
|
| 74 |
@code { |
| 75 |
|
| 76 |
/// <summary>The configured STUN/TURN URLs, as a JSON array for <c>RTCPeerConnection</c>.</summary> |
| 77 |
private string IceServers => JsonSerializer.Serialize(Options.Value.IceServers); |
| 78 |
|
| 79 |
} |