socketreceiver.h

// Copyright (c) 2018 IIS (The Internet Foundation in Sweden)
// Written by Göran Andersson <initgoran@gmail.com>
 
#pragma once
 
#include <sys/socket.h>
#include "serversocket.h"
class SocketConnection;
 
class SocketReceiver : public ServerSocket {
public:
    SocketReceiver(Task *task, int sock, pid_t peer_pid);
 
    virtual SocketConnection *incoming() override;
 
    int passSocketToPeer(int fd);
 
    ssize_t passMessageToPeer(const char *buf, size_t len);
 
    pid_t peerPid() const {
        return peer;
    }
 
    void peerDead() {
        peer = 0;
        closeMe();
    }
private:
    pid_t peer;
 
    // Used when passing file descriptors to peer:
    struct msghdr fdpass_msg;
    struct iovec empty_data;
    char cmsgbuf[CMSG_SPACE(sizeof(int))];
    struct cmsghdr *cmsg;
 
    // Used when sending data to peer:
    struct msghdr parent_msg;
    struct iovec msg_data;
};