go-sdk/mcp/transport_example_test.go
Yashas Gunderia dd79ca3d44
mcp: include resultType on new-protocol responses (#1060)
## Summary

- Add `resultType: "complete"` to non-MRTR server result responses for
2026-07-28 requests.
- Cover `server/discover`, list methods, and completion responses, and
update expected conformance/example output.

## Why

Fixes #1032. The 2026-07-28 schema requires `resultType` on result
objects, but only the MRTR-capable results were setting it.

## Validation

- `go test ./mcp -run
'Test(ServerSessionHandle|CompleteResult|ClientConnectDiscover|InMemory_E2E_Discover)'
-count=1` — passed\n- `go test ./mcp -count=1` — passed\n- `go test
./...` — passed\n- `go vet ./...` — passed

---------

Co-authored-by: ychampion <ychampion@users.noreply.github.com>
Co-authored-by: Guglielmo Colombo <guglielmoc@google.com>
2026-07-13 11:51:19 +00:00

49 lines
1.6 KiB
Go

// Copyright 2025 The Go MCP SDK Authors. All rights reserved.
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
package mcp_test
import (
"bytes"
"context"
"fmt"
"log"
"slices"
"strings"
"github.com/modelcontextprotocol/go-sdk/mcp"
)
// !+loggingtransport
func ExampleLoggingTransport() {
ctx := context.Background()
t1, t2 := mcp.NewInMemoryTransports()
server := mcp.NewServer(&mcp.Implementation{Name: "server", Version: "v0.0.1"}, nil)
serverSession, err := server.Connect(ctx, t1, nil)
if err != nil {
log.Fatal(err)
}
defer serverSession.Close()
client := mcp.NewClient(&mcp.Implementation{Name: "client", Version: "v0.0.1"}, nil)
var b bytes.Buffer
logTransport := &mcp.LoggingTransport{Transport: t2, Writer: &b}
clientSession, err := client.Connect(ctx, logTransport, nil)
if err != nil {
log.Fatal(err)
}
defer clientSession.Close()
// Sort for stability: reads are concurrent to writes.
for _, line := range slices.Sorted(strings.SplitSeq(b.String(), "\n")) {
fmt.Println(line)
}
// Output:
// read: {"jsonrpc":"2.0","id":1,"result":{"resultType":"complete","ttlMs":0,"cacheScope":"public","supportedVersions":["2026-07-28","2025-11-25","2025-06-18","2025-03-26","2024-11-05"],"capabilities":{"logging":{}},"serverInfo":{"name":"server","version":"v0.0.1"}}}
// write: {"jsonrpc":"2.0","id":1,"method":"server/discover","params":{"_meta":{"io.modelcontextprotocol/clientCapabilities":{"roots":{"listChanged":true}},"io.modelcontextprotocol/clientInfo":{"name":"client","version":"v0.0.1"},"io.modelcontextprotocol/protocolVersion":"2026-07-28"}}}
}
// !-loggingtransport