Method sockSendTo

lib/host/wasi/inode-linux.cpp:1165–1205

}

WasiExpect<void> INode::sockSendTo(Span<Span<const uint8_t>> SiData,
                                   __wasi_siflags_t,
                                   __wasi_address_family_t AddressFamily,
                                   Span<const uint8_t> Address, uint16_t Port,
                                   __wasi_size_t &NWritten) const noexcept {
  int SysSiFlags = MSG_NOSIGNAL;
  sockaddr *ClientAddr = nullptr;
  socklen_t MsgNameLen = 0;
  VarAddrT AddressBuffer;

  if (Address.size()) {
    AddressBuffer = sockAddressAssignHelper(AddressFamily, Address, Port);
    ClientAddr = std::visit(VarAddrBuf(), AddressBuffer);
    MsgNameLen = std::visit(VarAddrSize(), AddressBuffer);
  }

  iovec SysIOVs[kIOVMax];
  size_t SysIOVsSize = 0;
  for (auto &IOV : SiData) {
    SysIOVs[SysIOVsSize].iov_base = const_cast<uint8_t *>(IOV.data());
    SysIOVs[SysIOVsSize].iov_len = IOV.size();
    ++SysIOVsSize;
  }

  msghdr SysMsgHdr;
  SysMsgHdr.msg_name = MsgNameLen == 0 ? nullptr : ClientAddr;
  SysMsgHdr.msg_namelen = MsgNameLen;
  SysMsgHdr.msg_iov = SysIOVs;
  SysMsgHdr.msg_iovlen = SysIOVsSize;
  SysMsgHdr.msg_control = nullptr;
  SysMsgHdr.msg_controllen = 0;

  // Store recv bytes length and flags.
  if (auto Res = ::sendmsg(Fd, &SysMsgHdr, SysSiFlags); unlikely(Res < 0)) {
    return WasiUnexpect(fromErrNo(errno));
  } else {
    NWritten = EndianValue(static_cast<__wasi_size_t>(Res)).le();
  }

  return {};
}

WasiExpect<void> INode::sockShutdown(__wasi_sdflags_t SdFlags) const noexcept {
  int SysFlags = 0;