errno should be used to evaluate error code
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@ -1466,7 +1466,7 @@ int Client::write_udp(const sockaddr *addr, socklen_t addrlen,
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auto nwrite = sendmsg(fd, &msg, 0);
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if (nwrite < 0) {
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if (nwrite == EAGAIN || nwrite == EWOULDBLOCK) {
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if (errno == EAGAIN || errno == EWOULDBLOCK) {
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return 1;
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}
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