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feat(mcp): add ServerSession.Notify for custom notification methods #898

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feat(mcp): add ServerSession.Notify for custom notification methods #898

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11 changes: 11 additions & 0 deletions mcp/server.go
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@ import (
"path/filepath"
"reflect"
"slices"
"strings"
"sync"
"sync/atomic"
"time"
Expand Down Expand Up @@ -1082,6 +1083,16 @@ func (ss *ServerSession) callProgressNotificationHandler(ctx context.Context, p
return nil, nil
}

// Notify sends a notification with an arbitrary custom method name.
// method MUST start with "notifications/". Returns when the peer has
// acknowledged the write or the context is cancelled.
func (ss *ServerSession) Notify(ctx context.Context, method string, params any) error {
if !strings.HasPrefix(method, "notifications/") {
return fmt.Errorf("Notify: method must start with notifications/, got %q", method)
}
return ss.getConn().Notify(ctx, method, params)
}

// NotifyProgress sends a progress notification from the server to the client
// associated with this session.
// This is typically used to report on the status of a long-running request
Expand Down