From 7d2cb485116636595250fce4ea4eab16a877479b Mon Sep 17 00:00:00 2001 From: Gregory Maxwell Date: Fri, 16 Jan 2015 05:59:36 -0800 Subject: [PATCH 1/2] Restore RPC HTTP keepalives to default. This avoids a regression for issues like #334 where high speed repeated connections eventually run the HTTP client out of sockets because all of theirs end up in time_wait. Maybe the trade-off here is suboptimal, but if both choices will fail then we prefer fewer changes until the root cause is solved. --- src/init.cpp | 2 +- src/rpcserver.cpp | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/src/init.cpp b/src/init.cpp index f851fcbbc..b58d1746e 100644 --- a/src/init.cpp +++ b/src/init.cpp @@ -380,7 +380,7 @@ std::string HelpMessage(HelpMessageMode mode) strUsage += " -rpcport= " + strprintf(_("Listen for JSON-RPC connections on (default: %u or testnet: %u)"), 8332, 18332) + "\n"; strUsage += " -rpcallowip= " + _("Allow JSON-RPC connections from specified source. Valid for are a single IP (e.g. 1.2.3.4), a network/netmask (e.g. 1.2.3.4/255.255.255.0) or a network/CIDR (e.g. 1.2.3.4/24). This option can be specified multiple times") + "\n"; strUsage += " -rpcthreads= " + strprintf(_("Set the number of threads to service RPC calls (default: %d)"), 4) + "\n"; - strUsage += " -rpckeepalive " + strprintf(_("RPC support for HTTP persistent connections (default: %d)"), 0) + "\n"; + strUsage += " -rpckeepalive " + strprintf(_("RPC support for HTTP persistent connections (default: %d)"), 1) + "\n"; strUsage += "\n" + _("RPC SSL options: (see the Bitcoin Wiki for SSL setup instructions)") + "\n"; strUsage += " -rpcssl " + _("Use OpenSSL (https) for JSON-RPC connections") + "\n"; diff --git a/src/rpcserver.cpp b/src/rpcserver.cpp index 9ebacdbe2..cb8714290 100644 --- a/src/rpcserver.cpp +++ b/src/rpcserver.cpp @@ -953,7 +953,7 @@ void ServiceConnection(AcceptedConnection *conn) ReadHTTPMessage(conn->stream(), mapHeaders, strRequest, nProto, MAX_SIZE); // HTTP Keep-Alive is false; close connection immediately - if ((mapHeaders["connection"] == "close") || (!GetBoolArg("-rpckeepalive", false))) + if ((mapHeaders["connection"] == "close") || (!GetBoolArg("-rpckeepalive", true))) fRun = false; // Process via JSON-RPC API From 1a25a7edf82706c3152e2d978d320ec465a34de1 Mon Sep 17 00:00:00 2001 From: Jonas Schnelli Date: Sat, 17 Jan 2015 16:34:27 +0100 Subject: [PATCH 2/2] [QA] fix httpbasic keep-alive test --- qa/rpc-tests/httpbasics.py | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/qa/rpc-tests/httpbasics.py b/qa/rpc-tests/httpbasics.py index 8cbf1d7f4..24533741e 100755 --- a/qa/rpc-tests/httpbasics.py +++ b/qa/rpc-tests/httpbasics.py @@ -35,13 +35,13 @@ class HTTPBasicsTest (BitcoinTestFramework): conn = httplib.HTTPConnection(url.hostname, url.port) conn.connect() - conn.request('GET', '/', '{"method": "getbestblockhash"}', headers) + conn.request('POST', '/', '{"method": "getbestblockhash"}', headers) out1 = conn.getresponse().read(); assert_equal('"error":null' in out1, True) assert_equal(conn.sock!=None, True) #according to http/1.1 connection must still be open! #send 2nd request without closing connection - conn.request('GET', '/', '{"method": "getchaintips"}', headers) + conn.request('POST', '/', '{"method": "getchaintips"}', headers) out2 = conn.getresponse().read(); assert_equal('"error":null' in out1, True) #must also response with a correct json-rpc message assert_equal(conn.sock!=None, True) #according to http/1.1 connection must still be open! @@ -52,13 +52,13 @@ class HTTPBasicsTest (BitcoinTestFramework): conn = httplib.HTTPConnection(url.hostname, url.port) conn.connect() - conn.request('GET', '/', '{"method": "getbestblockhash"}', headers) + conn.request('POST', '/', '{"method": "getbestblockhash"}', headers) out1 = conn.getresponse().read(); assert_equal('"error":null' in out1, True) assert_equal(conn.sock!=None, True) #according to http/1.1 connection must still be open! #send 2nd request without closing connection - conn.request('GET', '/', '{"method": "getchaintips"}', headers) + conn.request('POST', '/', '{"method": "getchaintips"}', headers) out2 = conn.getresponse().read(); assert_equal('"error":null' in out1, True) #must also response with a correct json-rpc message assert_equal(conn.sock!=None, True) #according to http/1.1 connection must still be open! @@ -69,7 +69,7 @@ class HTTPBasicsTest (BitcoinTestFramework): conn = httplib.HTTPConnection(url.hostname, url.port) conn.connect() - conn.request('GET', '/', '{"method": "getbestblockhash"}', headers) + conn.request('POST', '/', '{"method": "getbestblockhash"}', headers) out1 = conn.getresponse().read(); assert_equal('"error":null' in out1, True) assert_equal(conn.sock!=None, False) #now the connection must be closed after the response @@ -81,7 +81,7 @@ class HTTPBasicsTest (BitcoinTestFramework): conn = httplib.HTTPConnection(urlNode1.hostname, urlNode1.port) conn.connect() - conn.request('GET', '/', '{"method": "getbestblockhash"}', headers) + conn.request('POST', '/', '{"method": "getbestblockhash"}', headers) out1 = conn.getresponse().read(); assert_equal('"error":null' in out1, True) assert_equal(conn.sock!=None, False) #connection must be closed because keep-alive was set to false @@ -93,10 +93,10 @@ class HTTPBasicsTest (BitcoinTestFramework): conn = httplib.HTTPConnection(urlNode2.hostname, urlNode2.port) conn.connect() - conn.request('GET', '/', '{"method": "getbestblockhash"}', headers) + conn.request('POST', '/', '{"method": "getbestblockhash"}', headers) out1 = conn.getresponse().read(); assert_equal('"error":null' in out1, True) - assert_equal(conn.sock!=None, False) #connection must be closed because bitcoind should use keep-alive by default + assert_equal(conn.sock!=None, True) #connection must be closed because bitcoind should use keep-alive by default if __name__ == '__main__': HTTPBasicsTest ().main ()