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http: Restrict maximum size of request line + headers

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Prevent memory exhaustion by sending lots of data.
Also add a test to `httpbasics.py`.

Closes #6425
This commit is contained in:
Wladimir J. van der Laan
2015-10-20 11:35:10 +02:00
parent da7d57fb95
commit 41db8c4733
2 changed files with 18 additions and 0 deletions
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4
src/httpserver.cpp
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@@ -38,6 +38,9 @@
#include <boost/foreach.hpp>
#include <boost/scoped_ptr.hpp>
/** Maximum size of http request (request line + headers) */
static const size_t MAX_HEADERS_SIZE = 8192;
/** HTTP request work item */
class HTTPWorkItem : public HTTPClosure
{
@@ -414,6 +417,7 @@ bool InitHTTPServer()
}
evhttp_set_timeout(http, GetArg("-rpcservertimeout", DEFAULT_HTTP_SERVER_TIMEOUT));
evhttp_set_max_headers_size(http, MAX_HEADERS_SIZE);
evhttp_set_max_body_size(http, MAX_SIZE);
evhttp_set_gencb(http, http_request_cb, NULL);