relay.go (5 lines):
	- line 63: // TODO: Replace errFrameNotSent with more specific errors from Receive.
	- line 199: // TODO: We should be clearing these out in batches, rather than creating
	- line 311: // TODO: metrics for late-arriving frames.
	- line 397: // TODO: this is a protocol error, kill the connection.
	- line 553: // TODO: metrics for late-arriving frames.


inbound.go (1 line):
	- line 212: // TODO: move the cancel to the parent context at connnection level


relay_messages.go (1 line):
	- line 175: // TODO: Consider pooling lazyCallReq and using pointers to the struct.


thrift/transport.go (1 line):
	- line 86: // TODO switch to io.StringWriter once we don't need to support < 1.12


outbound.go (1 line):
	- line 332: // TODO how should this work with retries?


peer.go (1 line):
	- line 219: // TODO: remove calls to GetOrAdd, use Add instead


benchmark/req_bytes.go (1 line):
	- line 32: // TODO: we should replace this with base64 once we drop go1.4 support.


json/call.go (1 line):
	- line 128: // TODO: Don't lose the error type here.


checksum.go (1 line):
	- line 63: // TODO: Implement farm hash.


thrift/server.go (1 line):
	- line 115: // TODO: These are very similar to the connection fields, but we don't