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sharpen net device check keepalive options

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This commit is contained in:
john30
2019-12-29 14:45:04 +01:00
parent 7ad5098451
commit 177568c537
1 changed files with 12 additions and 1 deletions
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src/lib/ebus/device.cpp
+12 -1
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@@ -299,6 +299,12 @@ result_t NetworkDevice::open() {
ret = setsockopt(m_fd, IPPROTO_TCP, TCP_NODELAY, reinterpret_cast<void*>(&value), sizeof(value));
value = 1;
setsockopt(m_fd, SOL_SOCKET, SO_KEEPALIVE, reinterpret_cast<void*>(&value), sizeof(value));
value = 3; // send keepalive after 3 seconds of silence
setsockopt(m_fd, IPPROTO_TCP, TCP_KEEPIDLE, reinterpret_cast<void*>(&value), sizeof(value));
value = 2; // send keepalive in interval of 2 seconds
setsockopt(m_fd, IPPROTO_TCP, TCP_KEEPINTVL, reinterpret_cast<void*>(&value), sizeof(value));
value = 2; // drop connection after 2 failed keep alive sends
setsockopt(m_fd, IPPROTO_TCP, TCP_KEEPCNT, reinterpret_cast<void*>(&value), sizeof(value));
}
if (ret >= 0) {
ret = connect(m_fd, (struct sockaddr*)&m_address, sizeof(m_address));
@@ -312,13 +318,18 @@ result_t NetworkDevice::open() {
}
int cnt;
symbol_t buf[MTU];
while (ioctl(m_fd, FIONREAD, &cnt) >= 0 && cnt > 1) {
int ioerr;
while ((ioerr=ioctl(m_fd, FIONREAD, &cnt)) >= 0 && cnt > 1) {
// skip buffered input
ssize_t read = ::read(m_fd, &buf, MTU);
if (read <= 0) {
break;
}
}
if (ioerr < 0) {
close();
return RESULT_ERR_GENERIC_IO;
}
if (m_bufSize == 0) {
m_bufSize = MAX_LEN+1;
m_buffer = reinterpret_cast<symbol_t*>(malloc(m_bufSize));