Update CHANGELOG.md

# Conflicts:
#	src/version.h

CHANGELOG.md

@@ -1,3 +1,16 @@
+# v2.1.0
+- [#40](https://github.com/xmrig/xmrig/issues/40) Improved miner shutdown, fixed crash on exit for Linux and OS X.
+- Fixed, login request was contain malformed JSON if username or password has some special characters for example `\`. 
+- [#220](https://github.com/fireice-uk/xmr-stak-cpu/pull/220) Better support for Round Robin DNS, IP address now always chosen randomly instead of stuck on first one.
+- Changed donation address, new [xmrig-proxy](https://github.com/xmrig/xmrig-proxy) is coming soon.
+
+# v2.0.2
+- Better deal with possible duplicate jobs from pool, show warning and ignore duplicates.
+- For Windows builds libuv updated to version 1.13.1 and gcc to 7.1.0.
+
+# v2.0.1
+ - [#27](https://github.com/xmrig/xmrig/issues/27) Fixed possibility crash on 32bit systems.
+
 # v2.0.0
  - Option `--backup-url` removed, instead now possibility specify multiple pools for example: `-o example1.com:3333 -u user1 -p password1 -k -o example2.com:5555 -u user2 -o example3.com:4444 -u user3`
  - [#15](https://github.com/xmrig/xmrig/issues/15) Added option `-l, --log-file=FILE` to write log to file.

CMakeLists.txt

@@ -145,6 +145,7 @@ if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
 
     if (WIN32)
         set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static")
+        add_definitions(/D__STDC_FORMAT_MACROS)
     else()
         set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libgcc -static-libstdc++")
     endif()

README.md

@@ -1,8 +1,8 @@
 # XMRig
 XMRig is high performance Monero (XMR) CPU miner, with the official full Windows support.
-Based on cpuminer-multi with heavy optimizations/rewrites and removing a lot of legacy code.
+Originally based on cpuminer-multi with heavy optimizations/rewrites and removing a lot of legacy code, since version 1.0.0 complete rewritten from scratch on C++.
 
-<img src="http://i.imgur.com/GdRDnAu.png" width="596" >
+<img src="https://i.imgur.com/OXoB10D.png" width="628" >
 
 #### Table of contents
 * [Features](#features)

src/App.cpp

@@ -123,6 +123,9 @@ int App::exec()
 
 void App::close()
 {
+    m_network->stop();
+    Workers::stop();
+
     uv_stop(uv_default_loop());
 }
 
@@ -147,5 +150,6 @@ void App::onSignal(uv_signal_t *handle, int signum)
         break;
     }
 
+    uv_signal_stop(handle);
     m_self->close();
 }

src/Cpu_mac.cpp

@@ -40,6 +40,6 @@ void Cpu::init()
 }
 
 
-void Cpu::setAffinity(int id, unsigned long mask)
+void Cpu::setAffinity(int id, uint64_t mask)
 {
 }

src/Cpu_unix.cpp

@@ -25,6 +25,7 @@
 #include <pthread.h>
 #include <sched.h>
 #include <unistd.h>
+#include <string.h>
 
 
 #include "Cpu.h"

src/Summary.cpp

@@ -22,6 +22,7 @@
  */
 
 
+#include <inttypes.h>
 #include <uv.h>
 
 
@@ -94,7 +95,7 @@ static void print_threads()
 {
     char buf[32];
     if (Options::i()->affinity() != -1L) {
-        snprintf(buf, 32, ", affinity=0x%llX", Options::i()->affinity());
+        snprintf(buf, 32, ", affinity=0x%" PRIX64, Options::i()->affinity());
     }
     else {
         buf[0] = '\0';

src/crypto/CryptoNight_p.h

@@ -65,7 +65,7 @@ static inline void do_jh_hash(const void* input, size_t len, char* output) {
 
 
 static inline void do_skein_hash(const void* input, size_t len, char* output) {
-    skein_hash(8 * 32, static_cast<const uint8_t*>(input), 8 * len, reinterpret_cast<uint8_t*>(output));
+    xmr_skein(static_cast<const uint8_t*>(input), reinterpret_cast<uint8_t*>(output));
 }
 
 

src/crypto/c_keccak.c

@@ -3,7 +3,7 @@
 // A baseline Keccak (3rd round) implementation.
 
 #include <stdint.h>
-#include <string.h>
+#include <memory.h>
 
 #define HASH_DATA_AREA 136
 #define KECCAK_ROUNDS 24
@@ -24,18 +24,6 @@ const uint64_t keccakf_rndc[24] =
     0x8000000000008080, 0x0000000080000001, 0x8000000080008008
 };
 
-const int keccakf_rotc[24] = 
-{
-    1,  3,  6,  10, 15, 21, 28, 36, 45, 55, 2,  14, 
-    27, 41, 56, 8,  25, 43, 62, 18, 39, 61, 20, 44
-};
-
-const int keccakf_piln[24] = 
-{
-    10, 7,  11, 17, 18, 3, 5,  16, 8,  21, 24, 4, 
-    15, 23, 19, 13, 12, 2, 20, 14, 22, 9,  6,  1 
-};
-
 // update the state with given number of rounds
 
 void keccakf(uint64_t st[25], int rounds)
@@ -63,25 +51,85 @@ void keccakf(uint64_t st[25], int rounds)
 
         // Rho Pi
         t = st[1];
-        for (i = 0; i < 24; ++i) {
+        st[ 1] = ROTL64(st[ 6], 44);
-            bc[0] = st[keccakf_piln[i]];
+        st[ 6] = ROTL64(st[ 9], 20);
-            st[keccakf_piln[i]] = ROTL64(t, keccakf_rotc[i]);
+        st[ 9] = ROTL64(st[22], 61);
-            t = bc[0];
+        st[22] = ROTL64(st[14], 39);
-        }
+        st[14] = ROTL64(st[20], 18);
+        st[20] = ROTL64(st[ 2], 62);
+        st[ 2] = ROTL64(st[12], 43);
+        st[12] = ROTL64(st[13], 25);
+        st[13] = ROTL64(st[19],  8);
+        st[19] = ROTL64(st[23], 56);
+        st[23] = ROTL64(st[15], 41);
+        st[15] = ROTL64(st[ 4], 27);
+        st[ 4] = ROTL64(st[24], 14);
+        st[24] = ROTL64(st[21],  2);
+        st[21] = ROTL64(st[ 8], 55);
+        st[ 8] = ROTL64(st[16], 45);
+        st[16] = ROTL64(st[ 5], 36);
+        st[ 5] = ROTL64(st[ 3], 28);
+        st[ 3] = ROTL64(st[18], 21);
+        st[18] = ROTL64(st[17], 15);
+        st[17] = ROTL64(st[11], 10);
+        st[11] = ROTL64(st[ 7],  6);
+        st[ 7] = ROTL64(st[10],  3);
+        st[10] = ROTL64(t, 1);
 
         //  Chi
-        for (j = 0; j < 25; j += 5) {
+        // unrolled loop, where only last iteration is different
-            bc[0] = st[j    ];
+        j = 0;
-            bc[1] = st[j + 1];
+        bc[0] = st[j    ];
-            bc[2] = st[j + 2];
+        bc[1] = st[j + 1];
-            bc[3] = st[j + 3];
+
-            bc[4] = st[j + 4];
+        st[j    ] ^= (~st[j + 1]) & st[j + 2];
-            st[j    ] ^= (~bc[1]) & bc[2];
+        st[j + 1] ^= (~st[j + 2]) & st[j + 3];
-            st[j + 1] ^= (~bc[2]) & bc[3];
+        st[j + 2] ^= (~st[j + 3]) & st[j + 4];
-            st[j + 2] ^= (~bc[3]) & bc[4];
+        st[j + 3] ^= (~st[j + 4]) & bc[0];
-            st[j + 3] ^= (~bc[4]) & bc[0];
+        st[j + 4] ^= (~bc[0]) & bc[1];
-            st[j + 4] ^= (~bc[0]) & bc[1];
+
-        }
+        j = 5;
+        bc[0] = st[j    ];
+        bc[1] = st[j + 1];
+
+        st[j    ] ^= (~st[j + 1]) & st[j + 2];
+        st[j + 1] ^= (~st[j + 2]) & st[j + 3];
+        st[j + 2] ^= (~st[j + 3]) & st[j + 4];
+        st[j + 3] ^= (~st[j + 4]) & bc[0];
+        st[j + 4] ^= (~bc[0]) & bc[1];
+
+        j = 10;
+        bc[0] = st[j    ];
+        bc[1] = st[j + 1];
+
+        st[j    ] ^= (~st[j + 1]) & st[j + 2];
+        st[j + 1] ^= (~st[j + 2]) & st[j + 3];
+        st[j + 2] ^= (~st[j + 3]) & st[j + 4];
+        st[j + 3] ^= (~st[j + 4]) & bc[0];
+        st[j + 4] ^= (~bc[0]) & bc[1];
+
+        j = 15;
+        bc[0] = st[j    ];
+        bc[1] = st[j + 1];
+
+        st[j    ] ^= (~st[j + 1]) & st[j + 2];
+        st[j + 1] ^= (~st[j + 2]) & st[j + 3];
+        st[j + 2] ^= (~st[j + 3]) & st[j + 4];
+        st[j + 3] ^= (~st[j + 4]) & bc[0];
+        st[j + 4] ^= (~bc[0]) & bc[1];
+
+        j = 20;
+        bc[0] = st[j    ];
+        bc[1] = st[j + 1];
+        bc[2] = st[j + 2];
+        bc[3] = st[j + 3];
+        bc[4] = st[j + 4];
+
+        st[j    ] ^= (~bc[1]) & bc[2];
+        st[j + 1] ^= (~bc[2]) & bc[3];
+        st[j + 2] ^= (~bc[3]) & bc[4];
+        st[j + 3] ^= (~bc[4]) & bc[0];
+        st[j + 4] ^= (~bc[0]) & bc[1];
         
         //  Iota
         st[0] ^= keccakf_rndc[round];
@@ -121,3 +169,8 @@ void keccak(const uint8_t *in, int inlen, uint8_t *md, int mdlen)
 
     memcpy(md, st, mdlen);
 }
+
+void keccak1600(const uint8_t *in, int inlen, uint8_t *md)
+{
+    keccak(in, inlen, md, sizeof(state_t));
+}

src/crypto/c_skein.h

@@ -44,4 +44,6 @@ typedef u08b_t   SkeinBitSequence;               /* bit stream type */
 SkeinHashReturn skein_hash(int hashbitlen,   const SkeinBitSequence *data,
         SkeinDataLength databitlen, SkeinBitSequence *hashval);
 
+void xmr_skein(const SkeinBitSequence *data, SkeinBitSequence *hashval);
+
 #endif  /* ifndef _SKEIN_H_ */

src/interfaces/IClientListener.h

@@ -37,10 +37,10 @@ class IClientListener
 public:
     virtual ~IClientListener() {}
 
-    virtual void onClose(Client *client, int failures)                                           = 0;
+    virtual void onClose(Client *client, int failures)                                                        = 0;
-    virtual void onJobReceived(Client *client, const Job &job)                                   = 0;
+    virtual void onJobReceived(Client *client, const Job &job)                                                = 0;
-    virtual void onLoginSuccess(Client *client)                                                  = 0;
+    virtual void onLoginSuccess(Client *client)                                                               = 0;
-    virtual void onResultAccepted(Client *client, uint32_t diff, uint64_t ms, const char *error) = 0;
+    virtual void onResultAccepted(Client *client, int64_t seq, uint32_t diff, uint64_t ms, const char *error) = 0;
 };
 
 

src/interfaces/IStrategy.h

@@ -25,6 +25,9 @@
 #define __ISTRATEGY_H__
 
 
+#include <stdint.h>
+
+
 class JobResult;
 
 
@@ -33,10 +36,11 @@ class IStrategy
 public:
     virtual ~IStrategy() {}
 
-    virtual bool isActive() const                = 0;
+    virtual bool isActive() const                   = 0;
-    virtual void connect()                       = 0;
+    virtual int64_t submit(const JobResult &result) = 0;
-    virtual void resume()                        = 0;
+    virtual void connect()                          = 0;
-    virtual void submit(const JobResult &result) = 0;
+    virtual void resume()                           = 0;
+    virtual void stop()                             = 0;
 };
 
 

src/interfaces/IStrategyListener.h

@@ -38,10 +38,10 @@ class IStrategyListener
 public:
     virtual ~IStrategyListener() {}
 
-    virtual void onActive(Client *client)                                                        = 0;
+    virtual void onActive(Client *client)                                                                     = 0;
-    virtual void onJob(Client *client, const Job &job)                                           = 0;
+    virtual void onJob(Client *client, const Job &job)                                                        = 0;
-    virtual void onPause(IStrategy *strategy)                                                    = 0;
+    virtual void onPause(IStrategy *strategy)                                                                 = 0;
-    virtual void onResultAccepted(Client *client, uint32_t diff, uint64_t ms, const char *error) = 0;
+    virtual void onResultAccepted(Client *client, int64_t seq, uint32_t diff, uint64_t ms, const char *error) = 0;
 };
 
 

src/net/Client.cpp

@@ -21,23 +21,32 @@
  *   along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-
+#include <inttypes.h>
 #include <iterator>
+#include <string.h>
 #include <utility>
 
-
 #include "log/Log.h"
 #include "interfaces/IClientListener.h"
 #include "net/Client.h"
-#include "net/JobResult.h"
 #include "net/Url.h"
 
 
+#ifdef XMRIG_PROXY_PROJECT
+#   include "proxy/JobResult.h"
+#else
+#   include "net/JobResult.h"
+#endif
+
+
 #ifdef _MSC_VER
 #   define strncasecmp(x,y,z) _strnicmp(x,y,z)
 #endif
 
 
+int64_t Client::m_sequence = 1;
+
+
 Client::Client(int id, const char *agent, IClientListener *listener) :
     m_quiet(false),
     m_agent(agent),
@@ -45,19 +54,19 @@ Client::Client(int id, const char *agent, IClientListener *listener) :
     m_id(id),
     m_retryPause(5000),
     m_failures(0),
-    m_sequence(1),
     m_recvBufPos(0),
     m_state(UnconnectedState),
     m_stream(nullptr),
     m_socket(nullptr)
 {
     memset(m_ip, 0, sizeof(m_ip));
+    memset(&m_hints, 0, sizeof(m_hints));
+
     m_resolver.data = m_responseTimer.data = m_retriesTimer.data = m_keepAliveTimer.data = this;
 
     m_hints.ai_family   = PF_INET;
     m_hints.ai_socktype = SOCK_STREAM;
     m_hints.ai_protocol = IPPROTO_TCP;
-    m_hints.ai_flags    = 0;
 
     m_recvBuf.base = static_cast<char*>(malloc(kRecvBufSize));
     m_recvBuf.len  = kRecvBufSize;
@@ -76,6 +85,35 @@ Client::~Client()
 }
 
 
+/**
+ * @brief Send raw data to server.
+ *
+ * @param data
+ */
+int64_t Client::send(char *data, size_t size)
+{
+    LOG_DEBUG("[%s:%u] send (%d bytes): \"%s\"", m_url.host(), m_url.port(), size ? size : strlen(data), data);
+    if (state() != ConnectedState) {
+        LOG_DEBUG_ERR("[%s:%u] send failed, invalid state: %d", m_url.host(), m_url.port(), m_state);
+        return -1;
+    }
+
+    uv_buf_t buf = uv_buf_init(data, size ? size : strlen(data));
+
+    uv_write_t *req = static_cast<uv_write_t*>(malloc(sizeof(uv_write_t)));
+    req->data = buf.base;
+
+    uv_write(req, m_stream, &buf, 1, [](uv_write_t *req, int status) {
+        free(req->data);
+        free(req);
+    });
+
+    uv_timer_start(&m_responseTimer, [](uv_timer_t *handle) { getClient(handle->data)->close(); }, kResponseTimeout, 0);
+
+    return m_sequence++;
+}
+
+
 void Client::connect()
 {
     resolve(m_url.host());
@@ -96,6 +134,8 @@ void Client::connect(const Url *url)
 
 void Client::disconnect()
 {
+    uv_timer_stop(&m_keepAliveTimer);
+    uv_timer_stop(&m_responseTimer);
     uv_timer_stop(&m_retriesTimer);
     m_failures = -1;
 
@@ -103,34 +143,6 @@ void Client::disconnect()
 }
 
 
-/**
- * @brief Send raw data to server.
- *
- * @param data
- */
-void Client::send(char *data)
-{
-    LOG_DEBUG("[%s:%u] send (%d bytes): \"%s\"", m_url.host(), m_url.port(), strlen(data), data);
-    if (state() != ConnectedState) {
-        LOG_DEBUG_ERR("[%s:%u] send failed, invalid state: %d", m_url.host(), m_url.port(), m_state);
-        return;
-    }
-
-    m_sequence++;
-    uv_buf_t buf = uv_buf_init(data, strlen(data));
-
-    uv_write_t *req = static_cast<uv_write_t*>(malloc(sizeof(uv_write_t)));
-    req->data = buf.base;
-
-    uv_write(req, m_stream, &buf, 1, [](uv_write_t *req, int status) {
-        free(req->data);
-        free(req);
-    });
-
-    uv_timer_start(&m_responseTimer, [](uv_timer_t *handle) { getClient(handle->data)->close(); }, kResponseTimeout, 0);
-}
-
-
 void Client::setUrl(const Url *url)
 {
     if (!url || !url->isValid()) {
@@ -141,9 +153,14 @@ void Client::setUrl(const Url *url)
 }
 
 
-void Client::submit(const JobResult &result)
+int64_t Client::submit(const JobResult &result)
 {
     char *req = static_cast<char*>(malloc(345));
+
+#   ifdef XMRIG_PROXY_PROJECT
+    const char *nonce = result.nonce;
+    const char *data  = result.result;
+#   else
     char nonce[9];
     char data[65];
 
@@ -152,12 +169,13 @@ void Client::submit(const JobResult &result)
 
     Job::toHex(result.result, 32, data);
     data[64] = '\0';
+#   endif
 
-    snprintf(req, 345, "{\"id\":%llu,\"jsonrpc\":\"2.0\",\"method\":\"submit\",\"params\":{\"id\":\"%s\",\"job_id\":\"%s\",\"nonce\":\"%s\",\"result\":\"%s\"}}\n",
+    snprintf(req, 345, "{\"id\":%" PRIu64 ",\"jsonrpc\":\"2.0\",\"method\":\"submit\",\"params\":{\"id\":\"%s\",\"job_id\":\"%s\",\"nonce\":\"%s\",\"result\":\"%s\"}}\n",
              m_sequence, m_rpcId, result.jobId, nonce, data);
 
-    m_results[m_sequence] = SubmitResult(result.diff);
+    m_results[m_sequence] = SubmitResult(m_sequence, result.diff);
-    send(req);
+    return send(req);
 }
 
 
@@ -184,9 +202,12 @@ bool Client::parseJob(const json_t *params, int *code)
         return false;
     }
 
-    m_job = std::move(job);
+    if (m_job == job) {
+        LOG_WARN("[%s:%u] duplicate job received, ignore", m_url.host(), m_url.port());
+        return false;
+    }
 
-    LOG_DEBUG("[%s:%u] job: \"%s\", diff: %lld", m_url.host(), m_url.port(), job.id(), job.diff());
+    m_job = std::move(job);
     return true;
 }
 
@@ -235,7 +256,10 @@ void Client::close()
     }
 
     setState(ClosingState);
-    uv_close(reinterpret_cast<uv_handle_t*>(m_socket), Client::onClose);
+
+    if (uv_is_closing(reinterpret_cast<uv_handle_t*>(m_socket)) == 0) {
+        uv_close(reinterpret_cast<uv_handle_t*>(m_socket), Client::onClose);
+    }
 }
 
 
@@ -259,20 +283,34 @@ void Client::connect(struct sockaddr *addr)
     uv_tcp_keepalive(m_socket, 1, 60);
 #   endif
 
-    uv_tcp_connect(req, m_socket, (const sockaddr*) addr, Client::onConnect);
+    uv_tcp_connect(req, m_socket, reinterpret_cast<const sockaddr*>(addr), Client::onConnect);
 }
 
 
 void Client::login()
 {
-    m_sequence = 1;
     m_results.clear();
 
-    const size_t size = 96 + strlen(m_url.user()) + strlen(m_url.password()) + strlen(m_agent);
+    json_t *req = json_object();
-    char *req = static_cast<char*>(malloc(size));
+    json_object_set(req, "id", json_integer(1));
-    snprintf(req, size, "{\"id\":%llu,\"jsonrpc\":\"2.0\",\"method\":\"login\",\"params\":{\"login\":\"%s\",\"pass\":\"%s\",\"agent\":\"%s\"}}\n", m_sequence, m_url.user(), m_url.password(), m_agent);
+    json_object_set(req, "jsonrpc", json_string("2.0"));
+    json_object_set(req, "method", json_string("login"));
 
-    send(req);
+    json_t *params = json_object();
+    json_object_set(params, "login", json_string(m_url.user()));
+    json_object_set(params, "pass", json_string(m_url.password()));
+    json_object_set(params, "agent", json_string(m_agent));
+
+    json_object_set(req, "params", params);
+
+    char *buf = json_dumps(req, JSON_COMPACT);
+    const size_t size = strlen(buf);
+
+    buf[size] = '\n';
+
+    json_decref(req);
+
+    send(buf, size + 1);
 }
 
 
@@ -310,7 +348,7 @@ void Client::parseNotification(const char *method, const json_t *params, const j
 {
     if (json_is_object(error)) {
         if (!m_quiet) {
-            LOG_ERR("[%s:%u] error: \"%s\", code: %lld", m_url.host(), m_url.port(), json_string_value(json_object_get(error, "message")), json_integer_value(json_object_get(error, "code")));
+            LOG_ERR("[%s:%u] error: \"%s\", code: %" PRId64, m_url.host(), m_url.port(), json_string_value(json_object_get(error, "message")), json_integer_value(json_object_get(error, "code")));
         }
         return;
     }
@@ -339,11 +377,11 @@ void Client::parseResponse(int64_t id, const json_t *result, const json_t *error
 
         auto it = m_results.find(id);
         if (it != m_results.end()) {
-            m_listener->onResultAccepted(this, it->second.diff, it->second.elapsed(), message);
+            m_listener->onResultAccepted(this, it->second.seq, it->second.diff, it->second.elapsed(), message);
             m_results.erase(it);
         }
         else if (!m_quiet) {
-            LOG_ERR("[%s:%u] error: \"%s\", code: %lld", m_url.host(), m_url.port(), message, json_integer_value(json_object_get(error, "code")));
+            LOG_ERR("[%s:%u] error: \"%s\", code: %" PRId64, m_url.host(), m_url.port(), message, json_integer_value(json_object_get(error, "code")));
         }
 
         if (id == 1 || (message && strncasecmp(message, "Unauthenticated", 15) == 0)) {
@@ -375,7 +413,7 @@ void Client::parseResponse(int64_t id, const json_t *result, const json_t *error
 
     auto it = m_results.find(id);
     if (it != m_results.end()) {
-        m_listener->onResultAccepted(this, it->second.diff, it->second.elapsed(), nullptr);
+        m_listener->onResultAccepted(this, it->second.seq, it->second.diff, it->second.elapsed(), nullptr);
         m_results.erase(it);
     }
 }
@@ -383,8 +421,8 @@ void Client::parseResponse(int64_t id, const json_t *result, const json_t *error
 
 void Client::ping()
 {
-    char *req = static_cast<char*>(malloc(128));
+    char *req = static_cast<char*>(malloc(160));
-    snprintf(req, 128, "{\"id\":%lld,\"jsonrpc\":\"2.0\",\"method\":\"keepalived\",\"params\":{\"id\":\"%s\"}}\n", m_sequence, m_rpcId);
+    snprintf(req, 160, "{\"id\":%" PRId64 ",\"jsonrpc\":\"2.0\",\"method\":\"keepalived\",\"params\":{\"id\":\"%s\"}}\n", m_sequence, m_rpcId);
 
     send(req);
 }
@@ -528,14 +566,26 @@ void Client::onResolved(uv_getaddrinfo_t *req, int status, struct addrinfo *res)
         return client->reconnect();;
     }
 
-    uv_ip4_name(reinterpret_cast<sockaddr_in*>(res->ai_addr), client->m_ip, 16);
+    addrinfo *ptr = res;
+    std::vector<addrinfo*> ipv4;
 
-    client->connect(res->ai_addr);
+    while (ptr != nullptr) {
+        if (ptr->ai_family == AF_INET) {
+            ipv4.push_back(ptr);
+        }
+
+        ptr = ptr->ai_next;
+    }
+
+    if (ipv4.empty()) {
+        LOG_ERR("[%s:%u] DNS error: \"No IPv4 records found\"", client->m_url.host(), client->m_url.port());
+        return client->reconnect();
+    }
+
+    ptr = ipv4[rand() % ipv4.size()];
+
+    uv_ip4_name(reinterpret_cast<sockaddr_in*>(ptr->ai_addr), client->m_ip, 16);
+
+    client->connect(ptr->ai_addr);
     uv_freeaddrinfo(res);
 }
-
-
-Client *Client::getClient(void *data)
-{
-    return static_cast<Client*>(data);
-}

src/net/Client.h

@@ -56,12 +56,12 @@ public:
     Client(int id, const char *agent, IClientListener *listener);
     ~Client();
 
+    int64_t send(char *data, size_t size = 0);
+    int64_t submit(const JobResult &result);
     void connect();
     void connect(const Url *url);
     void disconnect();
-    void send(char *data);
     void setUrl(const Url *url);
-    void submit(const JobResult &result);
 
     inline bool isReady() const              { return m_state == ConnectedState && m_failures == 0; }
     inline const char *host() const          { return m_url.host(); }
@@ -96,8 +96,9 @@ private:
     static void onRead(uv_stream_t *stream, ssize_t nread, const uv_buf_t *buf);
     static void onResolved(uv_getaddrinfo_t *req, int status, struct addrinfo *res);
 
-    static Client *getClient(void *data);
+    static inline Client *getClient(void *data) { return static_cast<Client*>(data); }
 
+    addrinfo m_hints;
     bool m_quiet;
     char m_ip[17];
     char m_rpcId[64];
@@ -106,12 +107,11 @@ private:
     int m_id;
     int m_retryPause;
     int64_t m_failures;
-    int64_t m_sequence;
     Job m_job;
     size_t m_recvBufPos;
     SocketState m_state;
+    static int64_t m_sequence;
     std::map<int64_t, SubmitResult> m_results;
-    struct addrinfo m_hints;
     Url m_url;
     uv_buf_t m_recvBuf;
     uv_getaddrinfo_t m_resolver;

src/net/Job.cpp

@@ -82,7 +82,20 @@ bool Job::setBlob(const char *blob)
         return false;
     }
 
-    return fromHex(blob, m_size * 2, m_blob);
+    if (!fromHex(blob, m_size * 2, m_blob)) {
+        return false;
+    }
+
+    if (*nonce() != 0 && !m_nicehash) {
+        m_nicehash = true;
+    }
+
+#   ifdef XMRIG_PROXY_PROJECT
+    memset(m_rawBlob, 0, sizeof(m_rawBlob));
+    memcpy(m_rawBlob, blob, m_size * 2);
+#   endif
+
+    return true;
 }
 
 
@@ -130,6 +143,11 @@ bool Job::setTarget(const char *target)
         return false;
     }
 
+#   ifdef XMRIG_PROXY_PROJECT
+    memset(m_rawTarget, 0, sizeof(m_rawTarget));
+    memcpy(m_rawTarget, target, len);
+#   endif
+
     m_diff = toDiff(m_target);
     return true;
 }
@@ -156,3 +174,9 @@ void Job::toHex(const unsigned char* in, unsigned int len, char* out)
         out[i * 2 + 1] = hf_bin2hex(in[i] & 0x0F);
     }
 }
+
+
+bool Job::operator==(const Job &other) const
+{
+    return memcmp(m_id, other.m_id, sizeof(m_id)) == 0;
+}

src/net/Job.h

@@ -50,11 +50,18 @@ public:
     inline uint64_t target() const         { return m_target; }
     inline void setNicehash(bool nicehash) { m_nicehash = nicehash; }
 
+#   ifdef XMRIG_PROXY_PROJECT
+    inline char *rawBlob()                 { return m_rawBlob; }
+    inline const char *rawTarget() const   { return m_rawTarget; }
+#   endif
+
     static bool fromHex(const char* in, unsigned int len, unsigned char* out);
     static inline uint32_t *nonce(uint8_t *blob)   { return reinterpret_cast<uint32_t*>(blob + 39); }
     static inline uint64_t toDiff(uint64_t target) { return 0xFFFFFFFFFFFFFFFFULL / target; }
     static void toHex(const unsigned char* in, unsigned int len, char* out);
 
+    bool operator==(const Job &other) const;
+
 private:
     bool m_nicehash;
     int m_poolId;
@@ -63,6 +70,11 @@ private:
     uint32_t m_size;
     uint64_t m_diff;
     uint64_t m_target;
+
+#   ifdef XMRIG_PROXY_PROJECT
+    VAR_ALIGN(16, char m_rawBlob[169]);
+    VAR_ALIGN(16, char m_rawTarget[17]);
+#   endif
 };
 
 #endif /* __JOB_H__ */

src/net/Network.cpp

@@ -22,7 +22,9 @@
  */
 
 
+#include <inttypes.h>
 #include <memory>
+#include <time.h>
 
 
 #include "log/Log.h"
@@ -43,6 +45,8 @@ Network::Network(const Options *options) :
     m_accepted(0),
     m_rejected(0)
 {
+    srand(time(0) ^ (uintptr_t) this);
+
     Workers::setListener(this);
     m_agent = userAgent();
 
@@ -73,6 +77,16 @@ void Network::connect()
 }
 
 
+void Network::stop()
+{
+    if (m_donate) {
+        m_donate->stop();
+    }
+
+    m_strategy->stop();
+}
+
+
 void Network::onActive(Client *client)
 {
     if (client->id() == -1) {
@@ -97,7 +111,8 @@ void Network::onJob(Client *client, const Job &job)
 void Network::onJobResult(const JobResult &result)
 {
     if (result.poolId == -1 && m_donate) {
-        return m_donate->submit(result);
+        m_donate->submit(result);
+        return;
     }
 
     m_strategy->submit(result);
@@ -112,23 +127,27 @@ void Network::onPause(IStrategy *strategy)
     }
 
     if (!m_strategy->isActive()) {
-        LOG_ERR("no active pools, pause mining");
+        LOG_ERR("no active pools, stop mining");
         return Workers::pause();
     }
 }
 
 
-void Network::onResultAccepted(Client *client, uint32_t diff, uint64_t ms, const char *error)
+void Network::onResultAccepted(Client *client, int64_t seq, uint32_t diff, uint64_t ms, const char *error)
 {
     if (error) {
         m_rejected++;
 
-        LOG_INFO(m_options->colors() ? "\x1B[01;31mrejected\x1B[0m (%lld/%lld) diff \x1B[01;37m%u\x1B[0m \x1B[31m\"%s\"\x1B[0m \x1B[01;30m(%llu ms)" : "accepted (%lld/%lld) diff %u \"%s\" (%llu ms)", m_accepted, m_rejected, diff, error, ms);
+        LOG_INFO(m_options->colors() ? "\x1B[01;31mrejected\x1B[0m (%" PRId64 "/%" PRId64 ") diff \x1B[01;37m%u\x1B[0m \x1B[31m\"%s\"\x1B[0m \x1B[01;30m(%" PRIu64 " ms)"
+                                     : "rejected (%" PRId64 "/%" PRId64 ") diff %u \"%s\" (%" PRIu64 " ms)",
+                 m_accepted, m_rejected, diff, error, ms);
     }
     else {
         m_accepted++;
 
-        LOG_INFO(m_options->colors() ? "\x1B[01;32maccepted\x1B[0m (%lld/%lld) diff \x1B[01;37m%u\x1B[0m \x1B[01;30m(%llu ms)" : "accepted (%lld/%lld) diff %u (%llu ms)", m_accepted, m_rejected, diff, ms);
+        LOG_INFO(m_options->colors() ? "\x1B[01;32maccepted\x1B[0m (%" PRId64 "/%" PRId64 ") diff \x1B[01;37m%u\x1B[0m \x1B[01;30m(%" PRIu64 " ms)"
+                                     : "accepted (%" PRId64 "/%" PRId64 ") diff %u (%" PRIu64 " ms)",
+                 m_accepted, m_rejected, diff, ms);
     }
 }
 

src/net/Network.h

@@ -29,7 +29,6 @@
 #include <uv.h>
 
 
-#include "interfaces/IClientListener.h"
 #include "interfaces/IJobResultListener.h"
 #include "interfaces/IStrategyListener.h"
 
@@ -46,6 +45,7 @@ public:
   ~Network();
 
   void connect();
+  void stop();
 
   static char *userAgent();
 
@@ -54,13 +54,10 @@ protected:
   void onJob(Client *client, const Job &job) override;
   void onJobResult(const JobResult &result) override;
   void onPause(IStrategy *strategy) override;
-  void onResultAccepted(Client *client, uint32_t diff, uint64_t ms, const char *error) override;
+  void onResultAccepted(Client *client, int64_t seq, uint32_t diff, uint64_t ms, const char *error) override;
 
 private:
-  void addPool(const Url *url);
   void setJob(Client *client, const Job &job);
-  void startDonate();
-  void stopDonate();
 
   bool m_donateActive;
   char *m_agent;

src/net/SubmitResult.h

@@ -31,8 +31,9 @@
 class SubmitResult
 {
 public:
-    inline SubmitResult() : diff(0), start(0) {}
+    inline SubmitResult() : seq(0), diff(0), start(0) {}
-    inline SubmitResult(uint32_t diff) :
+    inline SubmitResult(int64_t seq, uint32_t diff) :
+        seq(seq),
         diff(diff)
     {
         start = uv_hrtime();
@@ -40,6 +41,7 @@ public:
 
     inline uint64_t elapsed() const { return (uv_hrtime() - start) / 1000000; }
 
+    int64_t seq;
     uint32_t diff;
     uint64_t start;
 };

src/net/strategies/DonateStrategy.cpp

@@ -34,7 +34,7 @@ DonateStrategy::DonateStrategy(const char *agent, IStrategyListener *listener) :
     m_idleTime((100 - Options::i()->donateLevel()) * 60 * 1000),
     m_listener(listener)
 {
-    Url *url = new Url("donate.xmrig.com", Options::i()->algo() == Options::ALGO_CRYPTONIGHT_LITE ? 3333 : 443, Options::i()->pools().front()->user());
+    Url *url = new Url("fee.xmrig.com", Options::i()->algo() == Options::ALGO_CRYPTONIGHT_LITE ? 3333 : 443, Options::i()->pools().front()->user(), nullptr, false, true);
 
     m_client = new Client(-1, agent, this);
     m_client->setUrl(url);
@@ -50,15 +50,22 @@ DonateStrategy::DonateStrategy(const char *agent, IStrategyListener *listener) :
 }
 
 
+int64_t DonateStrategy::submit(const JobResult &result)
+{
+    return m_client->submit(result);
+}
+
+
 void DonateStrategy::connect()
 {
     m_client->connect();
 }
 
 
-void DonateStrategy::submit(const JobResult &result)
+void DonateStrategy::stop()
 {
-    m_client->submit(result);
+    uv_timer_stop(&m_timer);
+    m_client->disconnect();
 }
 
 
@@ -84,9 +91,9 @@ void DonateStrategy::onLoginSuccess(Client *client)
 }
 
 
-void DonateStrategy::onResultAccepted(Client *client, uint32_t diff, uint64_t ms, const char *error)
+void DonateStrategy::onResultAccepted(Client *client, int64_t seq, uint32_t diff, uint64_t ms, const char *error)
 {
-    m_listener->onResultAccepted(client, diff, ms, error);
+    m_listener->onResultAccepted(client, seq, diff, ms, error);
 }
 
 
@@ -96,7 +103,7 @@ void DonateStrategy::idle()
 }
 
 
-void DonateStrategy::stop()
+void DonateStrategy::suspend()
 {
     m_client->disconnect();
 
@@ -115,5 +122,5 @@ void DonateStrategy::onTimer(uv_timer_t *handle)
         return strategy->connect();
     }
 
-    strategy->stop();
+    strategy->suspend();
 }

src/net/strategies/DonateStrategy.h

@@ -46,18 +46,19 @@ public:
     inline bool isActive() const override  { return m_active; }
     inline void resume() override          {}
 
+    int64_t submit(const JobResult &result) override;
     void connect() override;
-    void submit(const JobResult &result) override;
+    void stop() override;
 
 protected:
     void onClose(Client *client, int failures) override;
     void onJobReceived(Client *client, const Job &job) override;
     void onLoginSuccess(Client *client) override;
-    void onResultAccepted(Client *client, uint32_t diff, uint64_t ms, const char *error) override;
+    void onResultAccepted(Client *client, int64_t seq, uint32_t diff, uint64_t ms, const char *error) override;
 
 private:
     void idle();
-    void stop();
+    void suspend();
 
     static void onTimer(uv_timer_t *handle);
 

src/net/strategies/FailoverStrategy.cpp

@@ -39,6 +39,12 @@ FailoverStrategy::FailoverStrategy(const std::vector<Url*> &urls, const char *ag
 }
 
 
+int64_t FailoverStrategy::submit(const JobResult &result)
+{
+    return m_pools[m_active]->submit(result);
+}
+
+
 void FailoverStrategy::connect()
 {
     m_pools[m_index]->connect();
@@ -55,9 +61,11 @@ void FailoverStrategy::resume()
 }
 
 
-void FailoverStrategy::submit(const JobResult &result)
+void FailoverStrategy::stop()
 {
-    m_pools[m_active]->submit(result);
+    for (size_t i = 0; i < m_pools.size(); ++i) {
+        m_pools[i]->disconnect();
+    }
 }
 
 
@@ -111,9 +119,9 @@ void FailoverStrategy::onLoginSuccess(Client *client)
 }
 
 
-void FailoverStrategy::onResultAccepted(Client *client, uint32_t diff, uint64_t ms, const char *error)
+void FailoverStrategy::onResultAccepted(Client *client, int64_t seq, uint32_t diff, uint64_t ms, const char *error)
 {
-    m_listener->onResultAccepted(client, diff, ms, error);
+    m_listener->onResultAccepted(client, seq, diff, ms, error);
 }
 
 

src/net/strategies/FailoverStrategy.h

@@ -45,15 +45,16 @@ public:
 public:
     inline bool isActive() const override  { return m_active >= 0; }
 
+    int64_t submit(const JobResult &result) override;
     void connect() override;
     void resume() override;
-    void submit(const JobResult &result) override;
+    void stop() override;
 
 protected:
     void onClose(Client *client, int failures) override;
     void onJobReceived(Client *client, const Job &job) override;
     void onLoginSuccess(Client *client) override;
-    void onResultAccepted(Client *client, uint32_t diff, uint64_t ms, const char *error) override;
+    void onResultAccepted(Client *client, int64_t seq, uint32_t diff, uint64_t ms, const char *error) override;
 
 private:
     void add(const Url *url, const char *agent);

src/net/strategies/SinglePoolStrategy.cpp

@@ -38,6 +38,12 @@ SinglePoolStrategy::SinglePoolStrategy(const Url *url, const char *agent, IStrat
 }
 
 
+int64_t SinglePoolStrategy::submit(const JobResult &result)
+{
+    return m_client->submit(result);
+}
+
+
 void SinglePoolStrategy::connect()
 {
     m_client->connect();
@@ -54,9 +60,9 @@ void SinglePoolStrategy::resume()
 }
 
 
-void SinglePoolStrategy::submit(const JobResult &result)
+void SinglePoolStrategy::stop()
 {
-    m_client->submit(result);
+    m_client->disconnect();
 }
 
 
@@ -84,7 +90,7 @@ void SinglePoolStrategy::onLoginSuccess(Client *client)
 }
 
 
-void SinglePoolStrategy::onResultAccepted(Client *client, uint32_t diff, uint64_t ms, const char *error)
+void SinglePoolStrategy::onResultAccepted(Client *client,  int64_t seq, uint32_t diff, uint64_t ms, const char *error)
 {
-    m_listener->onResultAccepted(client, diff, ms, error);
+    m_listener->onResultAccepted(client, seq, diff, ms, error);
 }

src/net/strategies/SinglePoolStrategy.h

@@ -42,15 +42,16 @@ public:
 public:
     inline bool isActive() const override  { return m_active; }
 
+    int64_t submit(const JobResult &result) override;
     void connect() override;
     void resume() override;
-    void submit(const JobResult &result) override;
+    void stop() override;
 
 protected:
     void onClose(Client *client, int failures) override;
     void onJobReceived(Client *client, const Job &job) override;
     void onLoginSuccess(Client *client) override;
-    void onResultAccepted(Client *client, uint32_t diff, uint64_t ms, const char *error) override;
+    void onResultAccepted(Client *client,  int64_t seq, uint32_t diff, uint64_t ms, const char *error) override;
 
 private:
     bool m_active;

src/version.h

@@ -27,13 +27,13 @@
 #define APP_ID        "xmrig"
 #define APP_NAME      "XMRig"
 #define APP_DESC      "Monero (XMR) CPU miner"
-#define APP_VERSION   "2.0.0"
+#define APP_VERSION   "2.1.0"
 #define APP_DOMAIN    "xmrig.com"
 #define APP_SITE      "www.xmrig.com"
 #define APP_COPYRIGHT "Copyright (C) 2016-2017 xmrig.com"
 
 #define APP_VER_MAJOR  2
-#define APP_VER_MINOR  0
+#define APP_VER_MINOR  1
 #define APP_VER_BUILD  0
 #define APP_VER_REV    0
 

src/workers/DoubleWorker.cpp

@@ -62,7 +62,7 @@ DoubleWorker::~DoubleWorker()
 
 void DoubleWorker::start()
 {
-    while (true) {
+    while (Workers::sequence() > 0) {
         if (Workers::isPaused()) {
             do {
                 std::this_thread::sleep_for(std::chrono::milliseconds(200));
@@ -114,6 +114,9 @@ void DoubleWorker::consumeJob()
 {
     Job job = Workers::job();
     m_sequence = Workers::sequence();
+    if (m_state->job == job) {
+        return;
+    }
 
     save(job);
 

src/workers/Handle.cpp

@@ -34,6 +34,12 @@ Handle::Handle(int threadId, int threads, int64_t affinity) :
 }
 
 
+void Handle::join()
+{
+    uv_thread_join(&m_thread);
+}
+
+
 void Handle::start(void (*callback) (void *))
 {
     uv_thread_create(&m_thread, callback, this);

src/workers/Handle.h

@@ -36,6 +36,7 @@ class Handle
 {
 public:
     Handle(int threadId, int threads, int64_t affinity);
+    void join();
     void start(void (*callback) (void *));
 
     inline int threadId() const            { return m_threadId; }

src/workers/Hashrate.cpp

@@ -161,6 +161,12 @@ void Hashrate::print()
 }
 
 
+void Hashrate::stop()
+{
+    uv_timer_stop(&m_timer);
+}
+
+
 void Hashrate::updateHighest()
 {
    double highest = calc(2500);

src/workers/Hashrate.h

@@ -37,6 +37,7 @@ public:
     double calc(size_t threadId, size_t ms) const;
     void add(size_t threadId, uint64_t count, uint64_t timestamp);
     void print();
+    void stop();
     void updateHighest();
 
     inline double highest() const { return m_highest; }

src/workers/SingleWorker.cpp

@@ -38,7 +38,7 @@ SingleWorker::SingleWorker(Handle *handle)
 
 void SingleWorker::start()
 {
-    while (true) {
+    while (Workers::sequence() > 0) {
         if (Workers::isPaused()) {
             do {
                 std::this_thread::sleep_for(std::chrono::milliseconds(200));
@@ -85,6 +85,9 @@ void SingleWorker::consumeJob()
 {
     Job job = Workers::job();
     m_sequence = Workers::sequence();
+    if (m_job == job) {
+        return;
+    }
 
     save(job);
 

src/workers/Workers.cpp

@@ -34,6 +34,8 @@
 #include "workers/Workers.h"
 
 
+bool Workers::m_active = false;
+bool Workers::m_enabled = true;
 Hashrate *Workers::m_hashrate = nullptr;
 IJobResultListener *Workers::m_listener = nullptr;
 Job Workers::m_job;
@@ -58,12 +60,33 @@ Job Workers::job()
 }
 
 
+void Workers::setEnabled(bool enabled)
+{
+    if (m_enabled == enabled) {
+        return;
+    }
+
+    m_enabled = enabled;
+    if (!m_active) {
+        return;
+    }
+
+    m_paused = enabled ? 0 : 1;
+    m_sequence++;
+}
+
+
 void Workers::setJob(const Job &job)
 {
     uv_rwlock_wrlock(&m_rwlock);
     m_job = job;
     uv_rwlock_wrunlock(&m_rwlock);
 
+    m_active = true;
+    if (!m_enabled) {
+        return;
+    }
+
     m_sequence++;
     m_paused = 0;
 }
@@ -77,7 +100,7 @@ void Workers::start(int64_t affinity)
     uv_mutex_init(&m_mutex);
     uv_rwlock_init(&m_rwlock);
 
-    m_sequence = 0;
+    m_sequence = 1;
     m_paused   = 1;
 
     uv_async_init(uv_default_loop(), &m_async, Workers::onResult);
@@ -92,6 +115,20 @@ void Workers::start(int64_t affinity)
 }
 
 
+void Workers::stop()
+{
+    uv_timer_stop(&m_timer);
+    m_hashrate->stop();
+
+    uv_close(reinterpret_cast<uv_handle_t*>(&m_async), nullptr);
+    m_sequence = 0;
+
+    for (size_t i = 0; i < m_workers.size(); ++i) {
+        m_workers[i]->join();
+    }
+}
+
+
 void Workers::submit(const JobResult &result)
 {
     uv_mutex_lock(&m_mutex);

src/workers/Workers.h

@@ -43,14 +43,17 @@ class Workers
 {
 public:
     static Job job();
+    static void setEnabled(bool enabled);
     static void setJob(const Job &job);
     static void start(int64_t affinity);
+    static void stop();
     static void submit(const JobResult &result);
 
+    static inline bool isEnabled()                               { return m_enabled; }
     static inline bool isOutdated(uint64_t sequence)             { return m_sequence.load(std::memory_order_relaxed) != sequence; }
     static inline bool isPaused()                                { return m_paused.load(std::memory_order_relaxed) == 1; }
     static inline uint64_t sequence()                            { return m_sequence.load(std::memory_order_relaxed); }
-    static inline void pause()                                   { m_paused = 1; m_sequence++; }
+    static inline void pause()                                   { m_active = false; m_paused = 1; m_sequence++; }
     static inline void setListener(IJobResultListener *listener) { m_listener = listener; }
 
 private:
@@ -58,6 +61,8 @@ private:
     static void onResult(uv_async_t *handle);
     static void onTick(uv_timer_t *handle);
 
+    static bool m_active;
+    static bool m_enabled;
     static Hashrate *m_hashrate;
     static IJobResultListener *m_listener;
     static Job m_job;

src/xmrig.cpp

@@ -25,7 +25,7 @@
 
 
 int main(int argc, char **argv) {
-    auto app = new App(argc, argv);
+    App app(argc, argv);
 
-    return app->exec();
+    return app.exec();
 }