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fix(sdk): route Go SDK envd RPCs to the envd port (49983) #821

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Merged
ls-ggg merged 1 commit into from
Jul 9, 2026
+19 −7
Merged

fix(sdk): route Go SDK envd RPCs to the envd port (49983) #821

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8 changes: 6 additions & 2 deletions sdk/go/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -198,11 +198,15 @@ sb, err := client.Create(ctx, cubesandbox.CreateOptions{
When `CUBE_PROXY_NODE_IP` is set, data-plane requests connect directly to that IP and port while preserving the virtual sandbox host:

```text
URL: <CUBE_PROXY_SCHEME>://49999-<sandboxID>.<CUBE_SANDBOX_DOMAIN>/<envd-endpoint>
URL: <CUBE_PROXY_SCHEME>://49983-<sandboxID>.<CUBE_SANDBOX_DOMAIN>/<envd-endpoint>
TCP: <CUBE_PROXY_NODE_IP>:<CUBE_PROXY_PORT_HTTP>
Host: 49999-<sandboxID>.<CUBE_SANDBOX_DOMAIN>
Host: 49983-<sandboxID>.<CUBE_SANDBOX_DOMAIN>
```

The host prefix is the sandbox's internal service port: `49983` (envd) for
commands/filesystem/files/PTY, and `49999` (Jupyter) for the code interpreter
(`RunCode` / `/execute`).

You can also set it directly:

```go
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2 changes: 1 addition & 1 deletion sdk/go/envd.go
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Expand Up @@ -225,7 +225,7 @@ func multipartFileBody(path string, data []byte) (io.Reader, string, error) {
func (s *Sandbox) newEnvdRequest(ctx context.Context, method, path string, query url.Values, body io.Reader) (*http.Request, error) {
target := url.URL{
Scheme: s.client.config.ProxyScheme,
Host: s.GetHost(JupyterPort),
Host: s.GetHost(EnvdPort),
Path: path,
RawQuery: query.Encode(),
}
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10 changes: 9 additions & 1 deletion sdk/go/sandbox.go
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Expand Up @@ -13,7 +13,15 @@ import (
"time"
)

const JupyterPort = 49999
const (
// JupyterPort is the code-interpreter (Jupyter) port, used only by the
// /execute endpoint (RunCode).
JupyterPort = 49999
// EnvdPort is the envd daemon port. All envd data-plane RPCs — commands,
// filesystem, files, and PTY — route here, matching the Python/Node SDKs
// (ENVD_PORT = 49983). Sending these to JupyterPort yields 404s.
EnvdPort = 49983
)

func (s *Sandbox) GetHost(port int) string {
domain := s.Domain
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6 changes: 3 additions & 3 deletions sdk/go/sdk_test.go
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Expand Up @@ -655,7 +655,7 @@ func TestCommandsRunUsesEnvdProcessStart(t *testing.T) {
t.Fatalf("Run: %v", err)
}

if gotHost != "49999-sb-proc.cube.test" {
if gotHost != "49983-sb-proc.cube.test" {
t.Fatalf("Host=%q", gotHost)
}
if gotHeaders.Get("Content-Type") != connectContentType || gotHeaders.Get("Connect-Protocol-Version") != connectProtocolVersion {
Expand Down Expand Up @@ -721,7 +721,7 @@ func TestFilesReadUsesEnvdHTTPFileAPI(t *testing.T) {
if content != "file content" {
t.Fatalf("content=%q", content)
}
if gotHost != "49999-sb-files.cube.test" || gotPath != "/tmp/foo bar.txt" || gotToken != "envd-token" {
if gotHost != "49983-sb-files.cube.test" || gotPath != "/tmp/foo bar.txt" || gotToken != "envd-token" {
t.Fatalf("host/path/token=%q/%q/%q", gotHost, gotPath, gotToken)
}
}
Expand Down Expand Up @@ -944,7 +944,7 @@ func TestFilesListUsesEnvdFilesystemRPC(t *testing.T) {
if len(entries) != 1 || entries[0].Name != "a.txt" || entries[0].Size != 10 || entries[0].IsDir() {
t.Fatalf("entries=%#v", entries)
}
if gotHost != "49999-sb-fs.cube.test" || gotPath != "/filesystem.Filesystem/ListDir" || gotCT != "application/json" {
if gotHost != "49983-sb-fs.cube.test" || gotPath != "/filesystem.Filesystem/ListDir" || gotCT != "application/json" {
t.Fatalf("host/path/ct=%q/%q/%q", gotHost, gotPath, gotCT)
}
}
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