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test: make abstract socket names unique per process #275

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Merged
mvandeberg merged 1 commit into from
Jun 11, 2026
Merged

test: make abstract socket names unique per process #275

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14 changes: 11 additions & 3 deletions test/unit/local_datagram_socket.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -296,11 +296,19 @@ struct local_datagram_socket_test
io_context ioc(Backend);
auto ex = ioc.get_executor();

// Abstract socket: null byte prefix, no filesystem entry
// Abstract socket: null byte prefix, no filesystem entry. The
// abstract namespace is global per network namespace, so the
// .epoll/.select/.io_uring variants -- separate processes run
// concurrently by `ctest --parallel` -- must not share a name, or
// they race to bind it and the loser gets EADDRINUSE. The pid makes
// each process's names unique; abstract names are released on close,
// so a reused pid from an exited run cannot clash.
auto const tag =
"corosio_test_abstract_dgram_" + std::to_string(::getpid());
std::string abs_path1(1, '\0');
abs_path1 += "corosio_test_abstract_dgram_1";
abs_path1 += tag + "_1";
std::string abs_path2(1, '\0');
abs_path2 += "corosio_test_abstract_dgram_2";
abs_path2 += tag + "_2";

local_datagram_socket s1(ioc);
local_datagram_socket s2(ioc);
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