#include <string.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
+#include <sys/time.h>
#include <time.h>
#include <unistd.h>
#include <map>
#include "httpinput.h"
#include "log.h"
-#include "metacube.h"
+#include "metacube2.h"
#include "mutexlock.h"
#include "parse.h"
#include "serverpool.h"
#include "state.pb.h"
+#include "stream.h"
#include "util.h"
#include "version.h"
string protocol;
parse_url(url, &protocol, &host, &port, &path); // Don't care if it fails.
- // Older versions stored the extra \r\n in the HTTP header.
- // Strip it if we find it.
- if (http_header.size() >= 4 &&
- memcmp(http_header.data() + http_header.size() - 4, "\r\n\r\n", 4) == 0) {
- http_header.resize(http_header.size() - 2);
- }
-
pthread_mutex_init(&stats_mutex, NULL);
stats.url = url;
stats.bytes_received = serialized.bytes_received();
for ( ;; ) {
// If we don't have enough data (yet) for even the Metacube header, just return.
- if (pending_data.size() < sizeof(metacube_block_header)) {
+ if (pending_data.size() < sizeof(metacube2_block_header)) {
return;
}
if (!has_metacube_header) {
char *ptr = static_cast<char *>(
memmem(pending_data.data(), pending_data.size(),
- METACUBE_SYNC, strlen(METACUBE_SYNC)));
+ METACUBE2_SYNC, strlen(METACUBE2_SYNC)));
if (ptr == NULL) {
// OK, so we didn't find the sync marker. We know then that
// we do not have the _full_ marker in the buffer, but we
// could have N-1 bytes. Drop everything before that,
// and then give up.
- drop_pending_data(pending_data.size() - (strlen(METACUBE_SYNC) - 1));
+ drop_pending_data(pending_data.size() - (strlen(METACUBE2_SYNC) - 1));
return;
} else {
// Yay, we found the header. Drop everything (if anything) before it.
has_metacube_header = true;
// Re-check that we have the entire header; we could have dropped data.
- if (pending_data.size() < sizeof(metacube_block_header)) {
+ if (pending_data.size() < sizeof(metacube2_block_header)) {
return;
}
}
}
// Now it's safe to read the header.
- metacube_block_header *hdr = reinterpret_cast<metacube_block_header *>(pending_data.data());
- assert(memcmp(hdr->sync, METACUBE_SYNC, sizeof(hdr->sync)) == 0);
- uint32_t size = ntohl(hdr->size);
- uint32_t flags = ntohl(hdr->flags);
-
+ metacube2_block_header hdr;
+ memcpy(&hdr, pending_data.data(), sizeof(hdr));
+ assert(memcmp(hdr.sync, METACUBE2_SYNC, sizeof(hdr.sync)) == 0);
+ uint32_t size = ntohl(hdr.size);
+ uint16_t flags = ntohs(hdr.flags);
+ uint16_t expected_csum = metacube2_compute_crc(&hdr);
+
+ if (expected_csum != ntohs(hdr.csum)) {
+ log(WARNING, "[%s] Metacube checksum failed (expected 0x%x, got 0x%x), "
+ "not reading block claiming to be %d bytes (flags=%x).",
+ url.c_str(), expected_csum, ntohs(hdr.csum),
+ size, flags);
+
+ // Drop only the first byte, and let the rest of the code handle resync.
+ pending_data.erase(pending_data.begin(), pending_data.begin() + 1);
+ has_metacube_header = false;
+ continue;
+ }
if (size > 262144) {
log(WARNING, "[%s] Metacube block of %d bytes (flags=%x); corrupted header?",
url.c_str(), size, flags);
}
// See if we have the entire block. If not, wait for more data.
- if (pending_data.size() < sizeof(metacube_block_header) + size) {
+ if (pending_data.size() < sizeof(metacube2_block_header) + size) {
return;
}
MutexLock lock(&stats_mutex);
stats.data_bytes_received += size;
}
- char *inner_data = pending_data.data() + sizeof(metacube_block_header);
+ char *inner_data = pending_data.data() + sizeof(metacube2_block_header);
if (flags & METACUBE_FLAGS_HEADER) {
stream_header = string(inner_data, inner_data + size);
for (size_t i = 0; i < stream_indices.size(); ++i) {
// Consume the block. This isn't the most efficient way of dealing with things
// should we have many blocks, but these routines don't need to be too efficient
// anyway.
- pending_data.erase(pending_data.begin(), pending_data.begin() + sizeof(metacube_block_header) + size);
+ pending_data.erase(pending_data.begin(), pending_data.begin() + sizeof(metacube2_block_header) + size);
has_metacube_header = false;
}
}
if (num_bytes == 0) {
return;
}
- log(WARNING, "[%s] Dropping %lld junk bytes from stream, maybe it is not a Metacube stream?",
+ log(WARNING, "[%s] Dropping %lld junk bytes from stream, maybe it is not a Metacube2 stream?",
url.c_str(), (long long)num_bytes);
assert(pending_data.size() >= num_bytes);
pending_data.erase(pending_data.begin(), pending_data.begin() + num_bytes);