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Verify good connection before using it.

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This commit is contained in:
jmjatlanta 2017-08-03 13:36:53 -05:00
parent d1d4d19fa8
commit ef53c886a0
1 changed files with 21 additions and 17 deletions
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38
exchange/bitswap/engine.c
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@ -82,23 +82,27 @@ void* ipfs_bitswap_engine_peer_request_processor_start(void* ctx) {
break;
}
if (current_peer_entry->connection_type == CONNECTION_TYPE_CONNECTED) {
libp2p_logger_debug("bitswap_engine", "We're connected to this peer. Lets see if there is a message waiting for us.\n");
int retVal = current_peer_entry->sessionContext->default_stream->peek(current_peer_entry->sessionContext);
if (retVal < 0) {
libp2p_logger_debug("bitswap_engine", "We thought we were connected, but Peek reported an error.\n");
libp2p_peer_handle_connection_error(current_peer_entry);
} else if (retVal > 0) {
libp2p_logger_debug("bitswap_engine", "Something waiting on network for peer %s.\n", current_peer_entry->id);
unsigned char* buffer = NULL;
size_t buffer_len = 0;
if (current_peer_entry->sessionContext->default_stream->read(current_peer_entry->sessionContext, &buffer, &buffer_len, 1)) {
// handle it
int retVal = ipfs_multistream_marshal(buffer, buffer_len, current_peer_entry->sessionContext, context->ipfsNode);
did_some_processing = 1;
if (retVal == -1) {
// there was a problem. Clean up
current_peer_entry->connection_type = CONNECTION_TYPE_NOT_CONNECTED;
libp2p_session_context_free(current_peer_entry->sessionContext);
if (current_peer_entry->sessionContext == NULL || current_peer_entry->sessionContext->default_stream == NULL) {
current_peer_entry->connection_type = CONNECTION_TYPE_NOT_CONNECTED;
} else {
libp2p_logger_debug("bitswap_engine", "We're connected to this peer. Lets see if there is a message waiting for us.\n");
int retVal = current_peer_entry->sessionContext->default_stream->peek(current_peer_entry->sessionContext);
if (retVal < 0) {
libp2p_logger_debug("bitswap_engine", "We thought we were connected, but Peek reported an error.\n");
libp2p_peer_handle_connection_error(current_peer_entry);
} else if (retVal > 0) {
libp2p_logger_debug("bitswap_engine", "Something waiting on network for peer %s.\n", current_peer_entry->id);
unsigned char* buffer = NULL;
size_t buffer_len = 0;
if (current_peer_entry->sessionContext->default_stream->read(current_peer_entry->sessionContext, &buffer, &buffer_len, 1)) {
// handle it
int retVal = ipfs_multistream_marshal(buffer, buffer_len, current_peer_entry->sessionContext, context->ipfsNode);
did_some_processing = 1;
if (retVal == -1) {
// there was a problem. Clean up
current_peer_entry->connection_type = CONNECTION_TYPE_NOT_CONNECTED;
libp2p_session_context_free(current_peer_entry->sessionContext);
}
}
}
}