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Add multipart/form-data support to reverse proxy for binary Grasshopper files #836

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Add multipart/form-data support to reverse proxy for binary Grasshopper files #836

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17cc232
refactor reverse proxy to handle multipart/form-data and improve requ…
TheVessen Mar 18, 2026
be49928
feat(ReverseProxy): add multipart/form-data support and fix async bod…
TheVessen Mar 18, 2026
2a66cab
fix: simplify changes
TheVessen Mar 18, 2026
71b6acc
fix: typo in application/json
TheVessen Mar 18, 2026
53a4b63
chore: remove unused indexLayout.xml file
TheVessen Mar 18, 2026
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16 changes: 14 additions & 2 deletions src/rhino.compute/ReverseProxy.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -102,7 +102,7 @@ Task LaunchChildren(HttpRequest request, HttpResponse response)
int parentProcessId = System.Convert.ToInt32(request.Query["parent"]);
if (Program.IsParentRhinoProcess(parentProcessId))
{
for (int i=0; i<children; i++)
for (int i = 0; i < children; i++)
{
ComputeChildren.LaunchCompute(false);
}
Expand Down Expand Up @@ -134,12 +134,24 @@ async Task<HttpResponseMessage> SendProxyRequest(HttpRequest initialRequest, Htt
if (initialRequest.Headers.TryGetValue(_apiKeyHeader, out var keyHeader))
req.Headers.Add(_apiKeyHeader, keyHeader.ToString());

var contentType = initialRequest.ContentType ?? string.Empty;
if (contentType.StartsWith("multipart/form-data", StringComparison.OrdinalIgnoreCase))
{
var streamContent = new StreamContent(initialRequest.Body);
streamContent.Headers.ContentType =
System.Net.Http.Headers.MediaTypeHeaderValue.Parse(contentType);
if (initialRequest.ContentLength.HasValue)
streamContent.Headers.ContentLength = initialRequest.ContentLength.Value;
req.Content = streamContent;
return await _client.SendAsync(req);
}

using (var stream = initialRequest.BodyReader.AsStream(false))
{
using (var sw = new System.IO.StreamReader(initialRequest.BodyReader.AsStream()))
{
string body = sw.ReadToEnd();
using (var stringContent = new StringContent(body, System.Text.Encoding.UTF8, "applicaton/json"))
using (var stringContent = new StringContent(body, System.Text.Encoding.UTF8, "application/json"))
{
req.Content = stringContent;
return await _client.SendAsync(req);
Expand Down