A return value for a function that may return either success (0) or a non-zero value representing an error. The values should match socket error numbers for your operating system - for example, the integers for ETIMEDOUT, EAGAIN, or similar.
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A return value for a function that may return either success (0) or a non-zero value representing an error. The values should match socket error numbers for your operating system - for example, the integers for ETIMEDOUT, EAGAIN, or similar.