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New address SOCKETPAIR for echoing datagrams

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This commit is contained in:
Gerhard Rieger 2023-09-30 18:30:56 +02:00
parent f152c55584
commit c311542e11
18 changed files with 285 additions and 13 deletions

24
xioread.c
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@ -134,7 +134,27 @@ ssize_t xioread(xiofile_t *file, void *buff, size_t bufsiz) {
#if _WITH_SOCKET
case XIOREAD_RECV:
if (pipe->dtype & XIOREAD_RECV_FROM) {
if (pipe->dtype & XIOREAD_RECV_NOCHECK) {
/* No need to check peer address */
do {
bytes =
Recv(pipe->fd, buff, bufsiz, 0);
} while (bytes < 0 && errno == EINTR);
if (bytes < 0) {
_errno = errno;
Error3("recvfrom(%d, %p, "F_Zu", 0", pipe->fd, buff, bufsiz);
errno = _errno;
return -1;
}
Notice1("received packet with "F_Zu" bytes", bytes);
if (bytes == 0) {
if (!pipe->para.socket.null_eof) {
errno = EAGAIN; return -1;
}
return bytes;
}
} else if (pipe->dtype & XIOREAD_RECV_FROM) {
/* Receiving packets in addresses of RECVFROM types, the sender address
has already been determined in OPEN phase. */
Debug1("%s(): XIOREAD_RECV and XIOREAD_RECV_FROM (peer checks already done)",
@ -375,7 +395,7 @@ ssize_t xioread(xiofile_t *file, void *buff, size_t bufsiz) {
return -1;
#endif /* !(WITH_RAWIP || WITH_UDP || WITH_UNIX) */
} else /* ~XIOREAD_RECV_FROM */ {
} else /* ~(XIOREAD_RECV_FROM|XIOREAD_RECV_FROM) */ {
/* Receiving packets without planning to answer to the sender, but we
might need sender info for some checks, thus we use recvfrom() */
struct msghdr msgh = {0};