only try to receive one byte to avoid discarding data
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@ -41,10 +41,10 @@ int64 io_receivefd(int64 sock) {
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#else
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int fd;
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#endif
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char x[100];
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char x;
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char name[100];
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iov.iov_base=x;
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iov.iov_len=100;
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iov.iov_base=&x;
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iov.iov_len=1;
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msg.msg_name=name;
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msg.msg_namelen=100;
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#ifdef CMSG_FIRSTHDR
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