/*
Do blocking I/O
*/
PUBLIC ssize mprWriteCmdBlock(MprCmd *cmd, int channel, cchar *buf, ssize bufsize)
{
#if ME_UNIX_LIKE
MprCmdFile *file;
ssize total, wrote;
file = &cmd->files[channel];
/*
Workaround for Mac OSX that seems to sometimes not full block on writes
*/
fcntl(file->fd, F_SETFL, fcntl(file->fd, F_GETFL) & ~O_NONBLOCK);
total = 0;
while (bufsize > 0) {
if ((wrote = mprWriteCmd(cmd, channel, buf, bufsize)) < 0) {
return wrote;
}
buf += wrote;
bufsize -= wrote;
total += wrote;
}
fcntl(file->fd, F_SETFL, fcntl(file->fd, F_GETFL) | O_NONBLOCK);
return total;
#else
return mprWriteCmd(cmd, channel, buf, bufsize);
#endif
}
static void browserToCgiService(HttpQueue *q)
{
HttpConn *conn;
HttpPacket *packet;
Cgi *cgi;
MprCmd *cmd;
MprBuf *buf;
ssize rc, len;
int err;
if ((cgi = q->queueData) == 0) {
return;
}
assert(q == cgi->writeq);
cmd = cgi->cmd;
assert(cmd);
conn = cgi->conn;
for (packet = httpGetPacket(q); packet; packet = httpGetPacket(q)) {
if ((buf = packet->content) == 0) {
/* End packet */
continue;
}
len = mprGetBufLength(buf);
rc = mprWriteCmd(cmd, MPR_CMD_STDIN, mprGetBufStart(buf), len);
if (rc < 0) {
err = mprGetError();
if (err == EINTR) {
continue;
} else if (err == EAGAIN || err == EWOULDBLOCK) {
httpPutBackPacket(q, packet);
break;
}
mprLog(2, "CGI: write to gateway failed for %d bytes, rc %d, errno %d", len, rc, mprGetOsError());
mprCloseCmdFd(cmd, MPR_CMD_STDIN);
httpDiscardQueueData(q, 1);
httpError(conn, HTTP_CODE_BAD_GATEWAY, "Cannot write body data to CGI gateway");
break;
}
mprTrace(6, "CGI: browserToCgiService %d/%d, qmax %d", rc, len, q->max);
mprAdjustBufStart(buf, rc);
if (mprGetBufLength(buf) > 0) {
httpPutBackPacket(q, packet);
break;
}
}
if (q->count > 0) {
/* Wait for writable event so cgiCallback can recall this routine */
mprEnableCmdEvents(cmd, MPR_CMD_STDIN);
} else if (conn->rx->eof) {
mprCloseCmdFd(cmd, MPR_CMD_STDIN);
} else {
mprDisableCmdEvents(cmd, MPR_CMD_STDIN);
}
}