1 //===-- GDBRemoteCommunicationClientTest.cpp --------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 #include "Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.h"
10 #include "GDBRemoteTestUtils.h"
11 #include "lldb/Core/ModuleSpec.h"
12 #include "lldb/Host/XML.h"
13 #include "lldb/Target/MemoryRegionInfo.h"
14 #include "lldb/Utility/DataBuffer.h"
15 #include "lldb/Utility/StructuredData.h"
16 #include "lldb/Utility/TraceOptions.h"
17 #include "lldb/lldb-enumerations.h"
18 #include "llvm/ADT/ArrayRef.h"
19 #include "llvm/Testing/Support/Error.h"
20 #include "gmock/gmock.h"
21 #include <future>
22 
23 using namespace lldb_private::process_gdb_remote;
24 using namespace lldb_private;
25 using namespace lldb;
26 using namespace llvm;
27 
28 namespace {
29 
30 typedef GDBRemoteCommunication::PacketResult PacketResult;
31 
32 struct TestClient : public GDBRemoteCommunicationClient {
33   TestClient() { m_send_acks = false; }
34 };
35 
36 void Handle_QThreadSuffixSupported(MockServer &server, bool supported) {
37   StringExtractorGDBRemote request;
38   ASSERT_EQ(PacketResult::Success, server.GetPacket(request));
39   ASSERT_EQ("QThreadSuffixSupported", request.GetStringRef());
40   if (supported)
41     ASSERT_EQ(PacketResult::Success, server.SendOKResponse());
42   else
43     ASSERT_EQ(PacketResult::Success, server.SendUnimplementedResponse(nullptr));
44 }
45 
46 void HandlePacket(MockServer &server,
47                   const testing::Matcher<const std::string &> &expected,
48                   StringRef response) {
49   StringExtractorGDBRemote request;
50   ASSERT_EQ(PacketResult::Success, server.GetPacket(request));
51   ASSERT_THAT(request.GetStringRef(), expected);
52   ASSERT_EQ(PacketResult::Success, server.SendPacket(response));
53 }
54 
55 uint8_t all_registers[] = {'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
56                            'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O'};
57 std::string all_registers_hex = "404142434445464748494a4b4c4d4e4f";
58 uint8_t one_register[] = {'A', 'B', 'C', 'D'};
59 std::string one_register_hex = "41424344";
60 
61 } // end anonymous namespace
62 
63 class GDBRemoteCommunicationClientTest : public GDBRemoteTest {
64 public:
65   void SetUp() override {
66     ASSERT_THAT_ERROR(GDBRemoteCommunication::ConnectLocally(client, server),
67                       llvm::Succeeded());
68   }
69 
70 protected:
71   TestClient client;
72   MockServer server;
73 };
74 
75 TEST_F(GDBRemoteCommunicationClientTest, WriteRegister) {
76   const lldb::tid_t tid = 0x47;
77   const uint32_t reg_num = 4;
78   std::future<bool> write_result = std::async(std::launch::async, [&] {
79     return client.WriteRegister(tid, reg_num, one_register);
80   });
81 
82   Handle_QThreadSuffixSupported(server, true);
83 
84   HandlePacket(server, "P4=" + one_register_hex + ";thread:0047;", "OK");
85   ASSERT_TRUE(write_result.get());
86 
87   write_result = std::async(std::launch::async, [&] {
88     return client.WriteAllRegisters(tid, all_registers);
89   });
90 
91   HandlePacket(server, "G" + all_registers_hex + ";thread:0047;", "OK");
92   ASSERT_TRUE(write_result.get());
93 }
94 
95 TEST_F(GDBRemoteCommunicationClientTest, WriteRegisterNoSuffix) {
96   const lldb::tid_t tid = 0x47;
97   const uint32_t reg_num = 4;
98   std::future<bool> write_result = std::async(std::launch::async, [&] {
99     return client.WriteRegister(tid, reg_num, one_register);
100   });
101 
102   Handle_QThreadSuffixSupported(server, false);
103   HandlePacket(server, "Hg47", "OK");
104   HandlePacket(server, "P4=" + one_register_hex, "OK");
105   ASSERT_TRUE(write_result.get());
106 
107   write_result = std::async(std::launch::async, [&] {
108     return client.WriteAllRegisters(tid, all_registers);
109   });
110 
111   HandlePacket(server, "G" + all_registers_hex, "OK");
112   ASSERT_TRUE(write_result.get());
113 }
114 
115 TEST_F(GDBRemoteCommunicationClientTest, ReadRegister) {
116   const lldb::tid_t tid = 0x47;
117   const uint32_t reg_num = 4;
118   std::future<bool> async_result = std::async(
119       std::launch::async, [&] { return client.GetpPacketSupported(tid); });
120   Handle_QThreadSuffixSupported(server, true);
121   HandlePacket(server, "p0;thread:0047;", one_register_hex);
122   ASSERT_TRUE(async_result.get());
123 
124   std::future<DataBufferSP> read_result = std::async(
125       std::launch::async, [&] { return client.ReadRegister(tid, reg_num); });
126   HandlePacket(server, "p4;thread:0047;", "41424344");
127   auto buffer_sp = read_result.get();
128   ASSERT_TRUE(bool(buffer_sp));
129   ASSERT_EQ(0,
130             memcmp(buffer_sp->GetBytes(), one_register, sizeof one_register));
131 
132   read_result = std::async(std::launch::async,
133                            [&] { return client.ReadAllRegisters(tid); });
134   HandlePacket(server, "g;thread:0047;", all_registers_hex);
135   buffer_sp = read_result.get();
136   ASSERT_TRUE(bool(buffer_sp));
137   ASSERT_EQ(0,
138             memcmp(buffer_sp->GetBytes(), all_registers, sizeof all_registers));
139 }
140 
141 TEST_F(GDBRemoteCommunicationClientTest, SaveRestoreRegistersNoSuffix) {
142   const lldb::tid_t tid = 0x47;
143   uint32_t save_id;
144   std::future<bool> async_result = std::async(std::launch::async, [&] {
145     return client.SaveRegisterState(tid, save_id);
146   });
147   Handle_QThreadSuffixSupported(server, false);
148   HandlePacket(server, "Hg47", "OK");
149   HandlePacket(server, "QSaveRegisterState", "1");
150   ASSERT_TRUE(async_result.get());
151   EXPECT_EQ(1u, save_id);
152 
153   async_result = std::async(std::launch::async, [&] {
154     return client.RestoreRegisterState(tid, save_id);
155   });
156   HandlePacket(server, "QRestoreRegisterState:1", "OK");
157   ASSERT_TRUE(async_result.get());
158 }
159 
160 TEST_F(GDBRemoteCommunicationClientTest, SyncThreadState) {
161   const lldb::tid_t tid = 0x47;
162   std::future<bool> async_result = std::async(
163       std::launch::async, [&] { return client.SyncThreadState(tid); });
164   HandlePacket(server, "qSyncThreadStateSupported", "OK");
165   HandlePacket(server, "QSyncThreadState:0047;", "OK");
166   ASSERT_TRUE(async_result.get());
167 }
168 
169 TEST_F(GDBRemoteCommunicationClientTest, GetModulesInfo) {
170   llvm::Triple triple("i386-pc-linux");
171 
172   FileSpec file_specs[] = {
173       FileSpec("/foo/bar.so", FileSpec::Style::posix),
174       FileSpec("/foo/baz.so", FileSpec::Style::posix),
175 
176       // This is a bit dodgy but we currently depend on GetModulesInfo not
177       // performing denormalization. It can go away once the users
178       // (DynamicLoaderPOSIXDYLD, at least) correctly set the path syntax for
179       // the FileSpecs they create.
180       FileSpec("/foo/baw.so", FileSpec::Style::windows),
181   };
182   std::future<llvm::Optional<std::vector<ModuleSpec>>> async_result =
183       std::async(std::launch::async,
184                  [&] { return client.GetModulesInfo(file_specs, triple); });
185   HandlePacket(
186       server, "jModulesInfo:["
187               R"({"file":"/foo/bar.so","triple":"i386-pc-linux"},)"
188               R"({"file":"/foo/baz.so","triple":"i386-pc-linux"},)"
189               R"({"file":"/foo/baw.so","triple":"i386-pc-linux"}])",
190       R"([{"uuid":"404142434445464748494a4b4c4d4e4f","triple":"i386-pc-linux",)"
191       R"("file_path":"/foo/bar.so","file_offset":0,"file_size":1234}]])");
192 
193   auto result = async_result.get();
194   ASSERT_TRUE(result.hasValue());
195   ASSERT_EQ(1u, result->size());
196   EXPECT_EQ("/foo/bar.so", result.getValue()[0].GetFileSpec().GetPath());
197   EXPECT_EQ(triple, result.getValue()[0].GetArchitecture().GetTriple());
198   EXPECT_EQ(UUID::fromData("@ABCDEFGHIJKLMNO", 16),
199             result.getValue()[0].GetUUID());
200   EXPECT_EQ(0u, result.getValue()[0].GetObjectOffset());
201   EXPECT_EQ(1234u, result.getValue()[0].GetObjectSize());
202 }
203 
204 TEST_F(GDBRemoteCommunicationClientTest, GetModulesInfo_UUID20) {
205   llvm::Triple triple("i386-pc-linux");
206 
207   FileSpec file_spec("/foo/bar.so", FileSpec::Style::posix);
208   std::future<llvm::Optional<std::vector<ModuleSpec>>> async_result =
209       std::async(std::launch::async,
210                  [&] { return client.GetModulesInfo(file_spec, triple); });
211   HandlePacket(
212       server,
213       "jModulesInfo:["
214       R"({"file":"/foo/bar.so","triple":"i386-pc-linux"}])",
215       R"([{"uuid":"404142434445464748494a4b4c4d4e4f50515253","triple":"i386-pc-linux",)"
216       R"("file_path":"/foo/bar.so","file_offset":0,"file_size":1234}]])");
217 
218   auto result = async_result.get();
219   ASSERT_TRUE(result.hasValue());
220   ASSERT_EQ(1u, result->size());
221   EXPECT_EQ("/foo/bar.so", result.getValue()[0].GetFileSpec().GetPath());
222   EXPECT_EQ(triple, result.getValue()[0].GetArchitecture().GetTriple());
223   EXPECT_EQ(UUID::fromData("@ABCDEFGHIJKLMNOPQRS", 20),
224             result.getValue()[0].GetUUID());
225   EXPECT_EQ(0u, result.getValue()[0].GetObjectOffset());
226   EXPECT_EQ(1234u, result.getValue()[0].GetObjectSize());
227 }
228 
229 TEST_F(GDBRemoteCommunicationClientTest, GetModulesInfoInvalidResponse) {
230   llvm::Triple triple("i386-pc-linux");
231   FileSpec file_spec("/foo/bar.so", FileSpec::Style::posix);
232 
233   const char *invalid_responses[] = {
234       // no UUID
235       R"([{"triple":"i386-pc-linux",)"
236       R"("file_path":"/foo/bar.so","file_offset":0,"file_size":1234}]])",
237       // invalid UUID
238       R"([{"uuid":"XXXXXX","triple":"i386-pc-linux",)"
239       R"("file_path":"/foo/bar.so","file_offset":0,"file_size":1234}]])",
240       // no triple
241       R"([{"uuid":"404142434445464748494a4b4c4d4e4f",)"
242       R"("file_path":"/foo/bar.so","file_offset":0,"file_size":1234}]])",
243       // no file_path
244       R"([{"uuid":"404142434445464748494a4b4c4d4e4f","triple":"i386-pc-linux",)"
245       R"("file_offset":0,"file_size":1234}]])",
246       // no file_offset
247       R"([{"uuid":"404142434445464748494a4b4c4d4e4f","triple":"i386-pc-linux",)"
248       R"("file_path":"/foo/bar.so","file_size":1234}]])",
249       // no file_size
250       R"([{"uuid":"404142434445464748494a4b4c4d4e4f","triple":"i386-pc-linux",)"
251       R"("file_path":"/foo/bar.so","file_offset":0}]])",
252   };
253 
254   for (const char *response : invalid_responses) {
255     std::future<llvm::Optional<std::vector<ModuleSpec>>> async_result =
256         std::async(std::launch::async,
257                    [&] { return client.GetModulesInfo(file_spec, triple); });
258     HandlePacket(
259         server,
260         R"(jModulesInfo:[{"file":"/foo/bar.so","triple":"i386-pc-linux"}])",
261         response);
262 
263     auto result = async_result.get();
264     ASSERT_TRUE(result);
265     ASSERT_EQ(0u, result->size()) << "response was: " << response;
266   }
267 }
268 
269 TEST_F(GDBRemoteCommunicationClientTest, TestPacketSpeedJSON) {
270   std::thread server_thread([this] {
271     for (;;) {
272       StringExtractorGDBRemote request;
273       PacketResult result = server.GetPacket(request);
274       if (result == PacketResult::ErrorDisconnected)
275         return;
276       ASSERT_EQ(PacketResult::Success, result);
277       StringRef ref = request.GetStringRef();
278       ASSERT_TRUE(ref.consume_front("qSpeedTest:response_size:"));
279       int size;
280       ASSERT_FALSE(ref.consumeInteger(10, size)) << "ref: " << ref;
281       std::string response(size, 'X');
282       ASSERT_EQ(PacketResult::Success, server.SendPacket(response));
283     }
284   });
285 
286   StreamString ss;
287   client.TestPacketSpeed(10, 32, 32, 4096, true, ss);
288   client.Disconnect();
289   server_thread.join();
290 
291   GTEST_LOG_(INFO) << "Formatted output: " << ss.GetData();
292   auto object_sp = StructuredData::ParseJSON(ss.GetString());
293   ASSERT_TRUE(bool(object_sp));
294   auto dict_sp = object_sp->GetAsDictionary();
295   ASSERT_TRUE(bool(dict_sp));
296 
297   object_sp = dict_sp->GetValueForKey("packet_speeds");
298   ASSERT_TRUE(bool(object_sp));
299   dict_sp = object_sp->GetAsDictionary();
300   ASSERT_TRUE(bool(dict_sp));
301 
302   int num_packets;
303   ASSERT_TRUE(dict_sp->GetValueForKeyAsInteger("num_packets", num_packets))
304       << ss.GetString();
305   ASSERT_EQ(10, num_packets);
306 }
307 
308 TEST_F(GDBRemoteCommunicationClientTest, SendSignalsToIgnore) {
309   std::future<Status> result = std::async(std::launch::async, [&] {
310     return client.SendSignalsToIgnore({2, 3, 5, 7, 0xB, 0xD, 0x11});
311   });
312 
313   HandlePacket(server, "QPassSignals:02;03;05;07;0b;0d;11", "OK");
314   EXPECT_TRUE(result.get().Success());
315 
316   result = std::async(std::launch::async, [&] {
317     return client.SendSignalsToIgnore(std::vector<int32_t>());
318   });
319 
320   HandlePacket(server, "QPassSignals:", "OK");
321   EXPECT_TRUE(result.get().Success());
322 }
323 
324 TEST_F(GDBRemoteCommunicationClientTest, GetMemoryRegionInfo) {
325   const lldb::addr_t addr = 0xa000;
326   MemoryRegionInfo region_info;
327   std::future<Status> result = std::async(std::launch::async, [&] {
328     return client.GetMemoryRegionInfo(addr, region_info);
329   });
330 
331   HandlePacket(server,
332       "qMemoryRegionInfo:a000",
333       "start:a000;size:2000;permissions:rx;name:2f666f6f2f6261722e736f;");
334   if (XMLDocument::XMLEnabled()) {
335     // In case we have XML support, this will also do a "qXfer:memory-map".
336     // Preceeded by a query for supported extensions. Pretend we don't support
337     // that.
338     HandlePacket(server, testing::StartsWith("qSupported:"), "");
339   }
340   EXPECT_TRUE(result.get().Success());
341   EXPECT_EQ(addr, region_info.GetRange().GetRangeBase());
342   EXPECT_EQ(0x2000u, region_info.GetRange().GetByteSize());
343   EXPECT_EQ(MemoryRegionInfo::eYes, region_info.GetReadable());
344   EXPECT_EQ(MemoryRegionInfo::eNo, region_info.GetWritable());
345   EXPECT_EQ(MemoryRegionInfo::eYes, region_info.GetExecutable());
346   EXPECT_EQ("/foo/bar.so", region_info.GetName().GetStringRef());
347 }
348 
349 TEST_F(GDBRemoteCommunicationClientTest, GetMemoryRegionInfoInvalidResponse) {
350   const lldb::addr_t addr = 0x4000;
351   MemoryRegionInfo region_info;
352   std::future<Status> result = std::async(std::launch::async, [&] {
353     return client.GetMemoryRegionInfo(addr, region_info);
354   });
355 
356   HandlePacket(server, "qMemoryRegionInfo:4000", "start:4000;size:0000;");
357   if (XMLDocument::XMLEnabled()) {
358     // In case we have XML support, this will also do a "qXfer:memory-map".
359     // Preceeded by a query for supported extensions. Pretend we don't support
360     // that.
361     HandlePacket(server, testing::StartsWith("qSupported:"), "");
362   }
363   EXPECT_FALSE(result.get().Success());
364 }
365 
366 TEST_F(GDBRemoteCommunicationClientTest, SendStartTracePacket) {
367   TraceOptions options;
368   Status error;
369 
370   options.setType(lldb::TraceType::eTraceTypeProcessorTrace);
371   options.setMetaDataBufferSize(8192);
372   options.setTraceBufferSize(8192);
373   options.setThreadID(0x23);
374 
375   StructuredData::DictionarySP custom_params =
376       std::make_shared<StructuredData::Dictionary>();
377   custom_params->AddStringItem("tracetech", "intel-pt");
378   custom_params->AddIntegerItem("psb", 0x01);
379 
380   options.setTraceParams(custom_params);
381 
382   std::future<lldb::user_id_t> result = std::async(std::launch::async, [&] {
383     return client.SendStartTracePacket(options, error);
384   });
385 
386   // Since the line is exceeding 80 characters.
387   std::string expected_packet1 =
388       R"(jTraceStart:{"buffersize" : 8192,"metabuffersize" : 8192,"params" :)";
389   std::string expected_packet2 =
390       R"( {"psb" : 1,"tracetech" : "intel-pt"},"threadid" : 35,"type" : 1})";
391   HandlePacket(server, (expected_packet1 + expected_packet2), "1");
392   ASSERT_TRUE(error.Success());
393   ASSERT_EQ(result.get(), 1u);
394 
395   error.Clear();
396   result = std::async(std::launch::async, [&] {
397     return client.SendStartTracePacket(options, error);
398   });
399 
400   HandlePacket(server, (expected_packet1 + expected_packet2), "E23");
401   ASSERT_EQ(result.get(), LLDB_INVALID_UID);
402   ASSERT_FALSE(error.Success());
403 }
404 
405 TEST_F(GDBRemoteCommunicationClientTest, SendStopTracePacket) {
406   lldb::tid_t thread_id = 0x23;
407   lldb::user_id_t trace_id = 3;
408 
409   std::future<Status> result = std::async(std::launch::async, [&] {
410     return client.SendStopTracePacket(trace_id, thread_id);
411   });
412 
413   const char *expected_packet =
414       R"(jTraceStop:{"threadid" : 35,"traceid" : 3})";
415   HandlePacket(server, expected_packet, "OK");
416   ASSERT_TRUE(result.get().Success());
417 
418   result = std::async(std::launch::async, [&] {
419     return client.SendStopTracePacket(trace_id, thread_id);
420   });
421 
422   HandlePacket(server, expected_packet, "E23");
423   ASSERT_FALSE(result.get().Success());
424 }
425 
426 TEST_F(GDBRemoteCommunicationClientTest, SendGetDataPacket) {
427   lldb::tid_t thread_id = 0x23;
428   lldb::user_id_t trace_id = 3;
429 
430   uint8_t buf[32] = {};
431   llvm::MutableArrayRef<uint8_t> buffer(buf, 32);
432   size_t offset = 0;
433 
434   std::future<Status> result = std::async(std::launch::async, [&] {
435     return client.SendGetDataPacket(trace_id, thread_id, buffer, offset);
436   });
437 
438   std::string expected_packet1 =
439       R"(jTraceBufferRead:{"buffersize" : 32,"offset" : 0,"threadid" : 35,)";
440   std::string expected_packet2 = R"("traceid" : 3})";
441   HandlePacket(server, expected_packet1+expected_packet2, "123456");
442   ASSERT_TRUE(result.get().Success());
443   ASSERT_EQ(buffer.size(), 3u);
444   ASSERT_EQ(buf[0], 0x12);
445   ASSERT_EQ(buf[1], 0x34);
446   ASSERT_EQ(buf[2], 0x56);
447 
448   llvm::MutableArrayRef<uint8_t> buffer2(buf, 32);
449   result = std::async(std::launch::async, [&] {
450     return client.SendGetDataPacket(trace_id, thread_id, buffer2, offset);
451   });
452 
453   HandlePacket(server, expected_packet1+expected_packet2, "E23");
454   ASSERT_FALSE(result.get().Success());
455   ASSERT_EQ(buffer2.size(), 0u);
456 }
457 
458 TEST_F(GDBRemoteCommunicationClientTest, SendGetMetaDataPacket) {
459   lldb::tid_t thread_id = 0x23;
460   lldb::user_id_t trace_id = 3;
461 
462   uint8_t buf[32] = {};
463   llvm::MutableArrayRef<uint8_t> buffer(buf, 32);
464   size_t offset = 0;
465 
466   std::future<Status> result = std::async(std::launch::async, [&] {
467     return client.SendGetMetaDataPacket(trace_id, thread_id, buffer, offset);
468   });
469 
470   std::string expected_packet1 =
471       R"(jTraceMetaRead:{"buffersize" : 32,"offset" : 0,"threadid" : 35,)";
472   std::string expected_packet2 = R"("traceid" : 3})";
473   HandlePacket(server, expected_packet1+expected_packet2, "123456");
474   ASSERT_TRUE(result.get().Success());
475   ASSERT_EQ(buffer.size(), 3u);
476   ASSERT_EQ(buf[0], 0x12);
477   ASSERT_EQ(buf[1], 0x34);
478   ASSERT_EQ(buf[2], 0x56);
479 
480   llvm::MutableArrayRef<uint8_t> buffer2(buf, 32);
481   result = std::async(std::launch::async, [&] {
482     return client.SendGetMetaDataPacket(trace_id, thread_id, buffer2, offset);
483   });
484 
485   HandlePacket(server, expected_packet1+expected_packet2, "E23");
486   ASSERT_FALSE(result.get().Success());
487   ASSERT_EQ(buffer2.size(), 0u);
488 }
489 
490 TEST_F(GDBRemoteCommunicationClientTest, SendGetTraceConfigPacket) {
491   lldb::tid_t thread_id = 0x23;
492   lldb::user_id_t trace_id = 3;
493   TraceOptions options;
494   options.setThreadID(thread_id);
495 
496   std::future<Status> result = std::async(std::launch::async, [&] {
497     return client.SendGetTraceConfigPacket(trace_id, options);
498   });
499 
500   const char *expected_packet =
501       R"(jTraceConfigRead:{"threadid" : 35,"traceid" : 3})";
502   std::string response1 =
503       R"({"buffersize" : 8192,"params" : {"psb" : 1,"tracetech" : "intel-pt"})";
504   std::string response2 =
505       R"(],"metabuffersize" : 8192,"threadid" : 35,"type" : 1}])";
506   HandlePacket(server, expected_packet, response1+response2);
507   ASSERT_TRUE(result.get().Success());
508   ASSERT_EQ(options.getTraceBufferSize(), 8192u);
509   ASSERT_EQ(options.getMetaDataBufferSize(), 8192u);
510   ASSERT_EQ(options.getType(), 1);
511 
512   auto custom_params = options.getTraceParams();
513 
514   uint64_t psb_value;
515   llvm::StringRef trace_tech_value;
516 
517   ASSERT_TRUE(custom_params);
518   ASSERT_EQ(custom_params->GetType(), eStructuredDataTypeDictionary);
519   ASSERT_TRUE(custom_params->GetValueForKeyAsInteger("psb", psb_value));
520   ASSERT_EQ(psb_value, 1u);
521   ASSERT_TRUE(
522       custom_params->GetValueForKeyAsString("tracetech", trace_tech_value));
523   ASSERT_STREQ(trace_tech_value.data(), "intel-pt");
524 
525   // Checking error response.
526   std::future<Status> result2 = std::async(std::launch::async, [&] {
527     return client.SendGetTraceConfigPacket(trace_id, options);
528   });
529 
530   HandlePacket(server, expected_packet, "E23");
531   ASSERT_FALSE(result2.get().Success());
532 
533   // Wrong JSON as response.
534   std::future<Status> result3 = std::async(std::launch::async, [&] {
535     return client.SendGetTraceConfigPacket(trace_id, options);
536   });
537 
538   std::string incorrect_json1 =
539       R"("buffersize" : 8192,"params" : {"psb" : 1,"tracetech" : "intel-pt"})";
540   std::string incorrect_json2 =
541       R"(],"metabuffersize" : 8192,"threadid" : 35,"type" : 1}])";
542   HandlePacket(server, expected_packet, incorrect_json1+incorrect_json2);
543   ASSERT_FALSE(result3.get().Success());
544 
545   // Wrong JSON as custom_params.
546   std::future<Status> result4 = std::async(std::launch::async, [&] {
547     return client.SendGetTraceConfigPacket(trace_id, options);
548   });
549 
550   std::string incorrect_custom_params1 =
551       R"({"buffersize" : 8192,"params" : "psb" : 1,"tracetech" : "intel-pt"})";
552   std::string incorrect_custom_params2 =
553       R"(],"metabuffersize" : 8192,"threadid" : 35,"type" : 1}])";
554   HandlePacket(server, expected_packet, incorrect_custom_params1+
555       incorrect_custom_params2);
556   ASSERT_FALSE(result4.get().Success());
557 }
558