040000 tree 65bbe526179fd3fbf23338cef4edba64c8d11496	address
040000 tree a06cc55d956d2cf7570e39f07dc6992c419f578e	resolver
040000 tree 6b08dbed1fcb4b09a07fe7fdcb6e99d78f9d4fc5	socket
100644 blob d583f22f5084bcdc786cbe37e07d50b8ed54799e	tcp.cc
100644 blob 300f735d8342c2921f35e14fc121d85aa9d600d1	udp.cc