| 61 | } |
| 62 | |
| 63 | bool setBlocking(SOCKET s, bool blocking) { |
| 64 | #if defined(_WIN32) |
| 65 | u_long mode = blocking ? 0 : 1; |
| 66 | return ioctlsocket(s, FIONBIO, &mode) == NO_ERROR; |
| 67 | #else |
| 68 | auto arg = fcntl(s, F_GETFL, nullptr); |
| 69 | if (arg < 0) { |
| 70 | return false; |
| 71 | } |
| 72 | arg = blocking ? (arg & ~O_NONBLOCK) : (arg | O_NONBLOCK); |
| 73 | return fcntl(s, F_SETFL, arg) >= 0; |
| 74 | #endif |
| 75 | } |
| 76 | |
| 77 | bool errored(SOCKET s) { |
| 78 | if (s == InvalidSocket) { |
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