Function getsockopt [src]

Prototype

pub fn getsockopt(fd: socket_t, level: i32, optname: u32, opt: []u8) GetSockOptError!void

Parameters

fd: socket_tlevel: i32optname: u32opt: []u8

Possible Errors

AccessDenied

The calling process does not have the appropriate privileges.

InvalidProtocolOption

The option is not supported by the protocol.

SystemResources

Insufficient resources are available in the system to complete the call.

Unexpected UnexpectedError

The Operating System returned an undocumented error code.

This error is in theory not possible, but it would be better to handle this error than to invoke undefined behavior.

When this error code is observed, it usually means the Zig Standard Library needs a small patch to add the error code to the error set for the respective function.

Source

  pub fn getsockopt(fd: socket_t, level: i32, optname: u32, opt: []u8) GetSockOptError!void {
    var len: socklen_t = undefined;
    switch (errno(system.getsockopt(fd, level, optname, opt.ptr, &len))) {
        .SUCCESS => {
            std.debug.assert(len == opt.len);
        },
        .BADF => unreachable,
        .NOTSOCK => unreachable,
        .INVAL => unreachable,
        .FAULT => unreachable,
        .NOPROTOOPT => return error.InvalidProtocolOption,
        .NOMEM => return error.SystemResources,
        .NOBUFS => return error.SystemResources,
        .ACCES => return error.AccessDenied,
        else => |err| return unexpectedErrno(err),
    }
}  