Include proxy (CONNECT)

The 'config.json' and the '-o' command option allow to include a proxy:
poolHost[:poolPort[@proxyHost[:proxyPort]].

src/config.json

@@ -6,6 +6,7 @@
     "cpu-affinity": null,   // set process affinity to CPU core(s), mask "0x3" for cores 0 and 1
     "cpu-priority": null,   // set process priority (0 idle, 2 normal to 5 highest)
     "donate-level": 5,      // donate level, mininum 1%
+    "debug": false,
     "log-file": null,       // log all output to a file, example: "c:/some/path/xmrig.log"
     "max-cpu-usage": 75,    // maximum CPU usage for automatic mode, usually limiting factor is CPU cache not this option.  
     "print-time": 60,       // print hashrate report every N seconds
@@ -21,6 +22,13 @@
             "pass": "x",                       // password for mining server
             "keepalive": true,                 // send keepalived for prevent timeout (need pool support)
             "nicehash": false                  // enable nicehash/xmrig-proxy support
+        },
+        {
+            "url": "pool.minemonero.pro:5555@localhost:8080",// URL of mining server with localhost proxy (example)
+            "user": "",                                      // username for mining server
+            "pass": "x",                                     // password for mining server
+            "keepalive": true,                               // send keepalived for prevent timeout (need pool support)
+            "nicehash": false                                // enable nicehash/xmrig-proxy support
        }
     ],
     "api": {

src/net/Client.cpp

@@ -274,7 +274,7 @@ int Client::resolve(const char *host)
 int64_t Client::send(size_t size)
 {
     LOG_DEBUG("[%s:%u] send (%d bytes): \"%s\"", m_url.host(), m_url.port(), size, m_sendBuf);
-    if (state() != ConnectedState || !uv_is_writable(m_stream)) {
+    if ((state() != ConnectedState && state() != ProxingState) || !uv_is_writable(m_stream)) {
         LOG_DEBUG_ERR("[%s:%u] send failed, invalid state: %d", m_url.host(), m_url.port(), m_state);
         return -1;
     }
@@ -328,6 +328,27 @@ void Client::connect(struct sockaddr *addr)
     uv_tcp_connect(req, m_socket, reinterpret_cast<const sockaddr*>(addr), Client::onConnect);
 }
 
+void Client::prelogin()
+{
+    if (m_url.proxyHost())
+    {
+        setState (ProxingState);
+        const std::string buffer = std::string ("CONNECT ") + m_url.finalHost() + ":" + std::to_string(m_url.finalPort()) + " HTTP/1.1\n";
+
+        const size_t size = buffer.size();
+        memcpy (m_sendBuf, buffer.c_str(), size);
+        m_sendBuf[size]     = '\n';
+        m_sendBuf[size + 1] = '\0';
+
+        LOG_DEBUG("Prelogin send (%d bytes): \"%s\"", size, m_sendBuf);
+        send (size + 1);
+    }
+    else
+    {
+        setState (ConnectedState);
+        login();
+    }
+}
 
 void Client::login()
 {
@@ -565,12 +586,11 @@ void Client::onConnect(uv_connect_t *req, int status)
 
     client->m_stream = static_cast<uv_stream_t*>(req->handle);
     client->m_stream->data = req->data;
-    client->setState(ConnectedState);
 
     uv_read_start(client->m_stream, Client::onAllocBuffer, Client::onRead);
     delete req;
 
-    client->login();
+    client->prelogin();
 }
 
 
@@ -589,6 +609,22 @@ void Client::onRead(uv_stream_t *stream, ssize_t nread, const uv_buf_t *buf)
         return client->close();
     }
 
+    if (client->state() == ProxingState)
+    {
+        const char* const content = buf->base;
+        LOG_DEBUG("[%s:%u] received from proxy (%d bytes): \"%s\"",
+                  client->m_url.host(), client->m_url.port(),
+                  nread, content);
+
+        if(content == strstr(content, "HTTP/1.1 200"))
+        {
+            LOG_INFO("[%s:%u] Proxy connected to %s:%u!", client->m_url.host(), client->m_url.port(), client->m_url.finalHost(), client->m_url.finalPort());
+            client->setState(ConnectedState);
+            client->login();
+        }
+        return;
+    }
+
     client->m_recvBufPos += nread;
 
     char* end;

src/net/Client.h

@@ -46,6 +46,7 @@ public:
         UnconnectedState,
         HostLookupState,
         ConnectingState,
+        ProxingState,
         ConnectedState,
         ClosingState
     };
@@ -81,6 +82,7 @@ private:
     int64_t send(size_t size);
     void close();
     void connect(struct sockaddr *addr);
+    void prelogin();
     void login();
     void parse(char *line, size_t len);
     void parseNotification(const char *method, const rapidjson::Value &params, const rapidjson::Value &error);

src/net/Url.cpp

@@ -41,7 +41,9 @@ Url::Url() :
     m_host(nullptr),
     m_password(nullptr),
     m_user(nullptr),
-    m_port(kDefaultPort)
+    m_port(kDefaultPort),
+    m_proxy_host(nullptr),
+    m_proxy_port(kDefaultProxyPort)
 {
 }
 
@@ -63,7 +65,9 @@ Url::Url(const char *url) :
     m_host(nullptr),
     m_password(nullptr),
     m_user(nullptr),
-    m_port(kDefaultPort)
+    m_port(kDefaultPort),
+    m_proxy_host (nullptr),
+    m_proxy_port (kDefaultProxyPort)
 {
     parse(url);
 }
@@ -74,7 +78,9 @@ Url::Url(const char *host, uint16_t port, const char *user, const char *password
     m_nicehash(nicehash),
     m_password(password ? strdup(password) : nullptr),
     m_user(user ? strdup(user) : nullptr),
-    m_port(port)
+    m_port(port),
+    m_proxy_host (nullptr),
+    m_proxy_port (kDefaultProxyPort)
 {
     m_host = strdup(host);
 }
@@ -116,7 +122,27 @@ bool Url::parse(const char *url)
     memcpy(m_host, base, size - 1);
     m_host[size - 1] = '\0';
 
+    const char* proxy = strchr(port, '@');
     m_port = (uint16_t) strtol(port, nullptr, 10);
+    if (!proxy) {
+        m_port = (uint16_t) strtol(port, nullptr, 10);
+        return true;
+    }
+
+	++proxy;
+
+    const char* proxyport = strchr(proxy, ':');
+    if (!port) {
+        m_proxy_host = strdup(proxy);
+        return false;
+    }
+
+    const size_t proxysize = proxyport++ - proxy + 1;
+    m_proxy_host = static_cast<char*>(malloc (proxysize));
+    memcpy(m_proxy_host, proxy, proxysize - 1);
+    m_proxy_host[proxysize - 1] = '\0';
+    m_proxy_port = (uint16_t) strtol(proxyport, nullptr, 10);
+
     return true;
 }
 
@@ -183,10 +209,21 @@ Url &Url::operator=(const Url *other)
     m_keepAlive = other->m_keepAlive;
     m_nicehash  = other->m_nicehash;
     m_port      = other->m_port;
+    m_proxy_port = other->m_proxy_port;
 
     free(m_host);
     m_host = strdup(other->m_host);
 
+    free (m_proxy_host);
+    if(other->m_proxy_host)
+    {
+    m_proxy_host = strdup (other->m_proxy_host);
+    }
+    else
+    {
+        m_proxy_host = nullptr;
+    }
+
     setPassword(other->m_password);
     setUser(other->m_user);
 

src/net/Url.h

@@ -34,6 +34,7 @@ public:
     constexpr static const char *kDefaultPassword = "x";
     constexpr static const char *kDefaultUser     = "x";
     constexpr static uint16_t kDefaultPort        = 3333;
+    constexpr static uint16_t kDefaultProxyPort   = 8080;
 
     Url();
     Url(const char *url);
@@ -43,10 +44,15 @@ public:
     inline bool isKeepAlive() const          { return m_keepAlive; }
     inline bool isNicehash() const           { return m_nicehash; }
     inline bool isValid() const              { return m_host && m_port > 0; }
-    inline const char *host() const          { return m_host; }
+    inline const char *host() const          { return isProxyed() ? proxyHost() : finalHost(); }
     inline const char *password() const      { return m_password ? m_password : kDefaultPassword; }
     inline const char *user() const          { return m_user ? m_user : kDefaultUser; }
-    inline uint16_t port() const             { return m_port; }
+    inline uint16_t port() const             { return isProxyed() ? proxyPort() : finalPort(); }
+    inline bool isProxyed() const            { return proxyHost(); }
+    inline const char* finalHost() const     { return m_host; }
+    inline uint16_t finalPort() const        { return m_port;}
+    inline const char* proxyHost() const     { return m_proxy_host; }
+    inline uint16_t proxyPort() const        { return m_proxy_port; }
     inline void setKeepAlive(bool keepAlive) { m_keepAlive = keepAlive; }
     inline void setNicehash(bool nicehash)   { m_nicehash = nicehash; }
 
@@ -65,6 +71,8 @@ private:
     char *m_password;
     char *m_user;
     uint16_t m_port;
+    char* m_proxy_host;
+    uint16_t m_proxy_port;
 };
 
 #endif /* __URL_H__ */