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mcp: bump protocol version from 2026-06-30 to 2026-07-28 (#1015)

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The new official date for the protocol version has been moved to
'2026-07-28'. Update all the references in the code of the old version.
This commit is contained in:
Guglielmo Colombo 2026-06-22 09:53:04 +02:00 • committed by GitHub
commit 17029489ff
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GPG key ID: B5690EEEBB952194
1 changed files with 137 additions and 137 deletions
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14
mcp/shared.go
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@ -36,7 +36,7 @@ const (
// It is the version that the client sends in the initialization request, and
// the default version used by the server.
latestProtocolVersion = protocolVersion20251125
protocolVersion20260630 = "2026-06-30"
protocolVersion20260728 = "2026-07-28"
protocolVersion20251125 = "2025-11-25"
protocolVersion20250618 = "2025-06-18"
protocolVersion20250326 = "2025-03-26"
@ -504,7 +504,7 @@ type validatedMeta struct {
}
// validateRequestMeta inspects a JSON-RPC request to detect whether it follows
// the >= 2026-06-30 protocol via the `_meta` field.
// the >= 2026-07-28 protocol via the `_meta` field.
// If the request has no _meta, or no protocolVersion in _meta, it returns a non-nil
// validatedMeta with usesNewProtocol set to false, and a nil error.
// If the request has a protocolVersion in _meta:
@ -518,7 +518,7 @@ func validateRequestMeta(req *jsonrpc.Request) (*validatedMeta, error) {
return &validatedMeta{usesNewProtocol: false, initializeParams: nil}, nil
}
protocolVersion, ok := meta[MetaKeyProtocolVersion].(string)
if !ok || protocolVersion < protocolVersion20260630 {
if !ok || protocolVersion < protocolVersion20260728 {
return &validatedMeta{usesNewProtocol: false, initializeParams: nil}, nil
}
// Notifications do not carry full client identity.
@ -585,7 +585,7 @@ type RequestExtra struct {
// to configure the reconnection delay.
//
// [SEP-1699]: https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1699
// This mechanism is deprecated in protocol version 2026-06-30 as the resumability
// This mechanism is deprecated in protocol version 2026-07-28 as the resumability
// feature is removed.
CloseSSEStream func(CloseSSEStreamArgs)
}
@ -611,7 +611,7 @@ func (r *ServerRequest[P]) GetExtra() *RequestExtra { return r.Extra }
// ProtocolVersion returns the protocol version negotiated for this request.
//
// For requests following the >= 2026-06-30 protocol, the value is read from
// For requests following the >= 2026-07-28 protocol, the value is read from
// the per-request `_meta` field. For older protocol requests, the value falls
// back to the session-level [InitializeParams] established during the
// initialize handshake.
@ -631,7 +631,7 @@ func (r *ServerRequest[P]) ProtocolVersion() string {
// ClientInfo returns the [Implementation] identifying the calling client.
//
// For requests following the >= 2026-06-30 protocol, the value is read from
// For requests following the >= 2026-07-28 protocol, the value is read from
// the per-request `_meta` field. For older protocol requests, the value falls
// back to the session-level [InitializeParams].
func (r *ServerRequest[P]) ClientInfo() *Implementation {
@ -650,7 +650,7 @@ func (r *ServerRequest[P]) ClientInfo() *Implementation {
// ClientCapabilities returns the [ClientCapabilities] of the calling client.
//
// For requests following the >= 2026-06-30 protocol, the value is read from
// For requests following the >= 2026-07-28 protocol, the value is read from
// the per-request `_meta` field. For older protocol requests, the value falls
// back to the session-level [InitializeParams].
func (r *ServerRequest[P]) ClientCapabilities() *ClientCapabilities {