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authorMartin Hurton <hurtonm@gmail.com>2009-08-31 13:11:46 +0200
committerMartin Hurton <hurtonm@gmail.com>2009-08-31 16:42:03 +0200
commit1f06d99a0f563fdc32e9c00392f9875ba3009593 (patch)
treee09931a3009406a632d46404230a9e6601af65cd /java
parent0aacee389fdb553ef9925d0135eefcb501a67726 (diff)
Add Java binding
Diffstat (limited to 'java')
-rw-r--r--java/Context.cpp92
-rw-r--r--java/Makefile.am72
-rw-r--r--java/Message.cpp138
-rw-r--r--java/Socket.cpp276
-rw-r--r--java/org/zmq/Context.java47
-rw-r--r--java/org/zmq/Message.java66
-rw-r--r--java/org/zmq/Socket.java141
7 files changed, 832 insertions, 0 deletions
diff --git a/java/Context.cpp b/java/Context.cpp
new file mode 100644
index 0000000..d8fcf99
--- /dev/null
+++ b/java/Context.cpp
@@ -0,0 +1,92 @@
+/*
+ Copyright (c) 2007-2009 FastMQ Inc.
+
+ This file is part of 0MQ.
+
+ 0MQ is free software; you can redistribute it and/or modify it under
+ the terms of the Lesser GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ 0MQ is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ Lesser GNU General Public License for more details.
+
+ You should have received a copy of the Lesser GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+
+#include "zmq.h"
+#include "org_zmq_Context.h"
+
+static jfieldID ctx_handle_fid = NULL;
+
+static void
+raise_exception (JNIEnv *env, int err)
+{
+ // Get exception class.
+ jclass exception_class = env->FindClass ("java/lang/Exception");
+ assert (exception_class);
+
+ // Get text description of the exception.
+ const char *err_msg = strerror (err);
+
+ // Raise the exception.
+ int rc = env->ThrowNew (exception_class, err_msg);
+ assert (rc == 0);
+
+ // Free the local ref.
+ env->DeleteLocalRef (exception_class);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Context_construct (JNIEnv *env, jobject obj,
+ jint app_threads, jint io_threads)
+{
+ if (ctx_handle_fid == NULL) {
+ jclass cls = env->GetObjectClass (obj);
+ assert (cls);
+ ctx_handle_fid = env->GetFieldID (cls, "contextHandle", "J");
+ assert (ctx_handle_fid);
+ env->DeleteLocalRef (cls);
+ }
+
+ void *ctx = zmq_init (app_threads, io_threads);
+ if (ctx == NULL) {
+ raise_exception (env, errno);
+ return;
+ }
+
+ env->SetLongField (obj, ctx_handle_fid, (jlong) ctx);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Context_finalize (JNIEnv *env, jobject obj)
+{
+ void *ctx = (void*) env->GetLongField (obj, ctx_handle_fid);
+ assert (ctx);
+
+ int rc = zmq_term (ctx);
+ assert (rc == 0);
+}
+
+JNIEXPORT jlong JNICALL
+Java_org_zmq_Context_createSocket (JNIEnv *env, jobject obj, jint type)
+{
+ void *ctx = (void*) env->GetLongField (obj, ctx_handle_fid);
+ assert (ctx);
+
+ void *s = zmq_socket (ctx, type);
+ if (s == NULL) {
+ raise_exception (env, errno);
+ return -1;
+ }
+
+ return (jlong) s;
+}
diff --git a/java/Makefile.am b/java/Makefile.am
new file mode 100644
index 0000000..363f941
--- /dev/null
+++ b/java/Makefile.am
@@ -0,0 +1,72 @@
+# We do not want to install Jzmq.class file
+# user has to copy it to the right location.
+#jzmqdir = /tmp
+
+jarfile = Zmq.jar
+jardir = $(datadir)/java
+
+$(jarfile): $(dist_noinst_JAVA)
+ $(JAR) cf $(JARFLAGS) $@ org/zmq/*.class
+
+jar_DATA = $(jarfile)
+
+dist_noinst_JAVA = \
+ org/zmq/Context.java \
+ org/zmq/Socket.java \
+ org/zmq/Message.java
+
+lib_LTLIBRARIES = libjzmq.la
+libjzmq_la_SOURCES = \
+ Context.cpp \
+ org_zmq_Context.h \
+ Socket.cpp \
+ org_zmq_Socket.h \
+ Message.cpp \
+ org_zmq_Message.h
+
+libjzmq_la_CXXFLAGS = -I$(top_builddir)/src/libzmq \
+@JAVA_INCLUDE@ -I$(top_builddir)/include -I$(top_srcdir)/libjzmq -Wall -I /usr/lib/jvm/java-6-openjdk/include
+libjzmq_la_LDFLAGS = -version-info 0:0:0
+libjzmq_la_LIBADD = $(top_builddir)/src/libzmq.la
+
+BUILT_SOURCES = \
+ org/zmq/Context.class \
+ org_zmq_Context.h \
+ org/zmq/Socket.class \
+ org_zmq_Socket.h \
+ org/zmq/Message.class \
+ org_zmq_Message.h
+
+CLEANFILES = \
+ org/zmq/Context.class \
+ org_zmq_Context.h \
+ org/zmq/Socket.class \
+ org_zmq_Socket.h \
+ org/zmq/Message.class \
+ org_zmq_Message.h \
+ Zmq.jar
+
+$(srcdir)/Context.cpp: org_zmq_Context.h
+
+org_zmq_Context.h: org/zmq/Context.class
+ $(CLASSPATH_ENV) $(JAVAH) -jni -classpath . org.zmq.Context
+
+./org/zmq/Context.class: classdist_noinst.stamp
+
+$(srcdir)/Socket.cpp: org_zmq_Socket.h
+
+org_zmq_Socket.h: org/zmq/Socket.class
+ $(CLASSPATH_ENV) $(JAVAH) -jni -classpath . org.zmq.Socket
+
+./org/zmq/Socket.class: classdist_noinst.stamp
+
+$(srcdir)/Message.cpp: org_zmq_Message.h
+
+org_zmq_Message.h: org/zmq/Message.class
+ $(CLASSPATH_ENV) $(JAVAH) -jni -classpath . org.zmq.Message
+
+./org/zmq/Message.class: classdist_noinst.stamp
+
+dist-hook:
+ -rm $(distdir)/*.h
+
diff --git a/java/Message.cpp b/java/Message.cpp
new file mode 100644
index 0000000..2105216
--- /dev/null
+++ b/java/Message.cpp
@@ -0,0 +1,138 @@
+/*
+ Copyright (c) 2007-2009 FastMQ Inc.
+
+ This file is part of 0MQ.
+
+ 0MQ is free software; you can redistribute it and/or modify it under
+ the terms of the Lesser GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ 0MQ is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ Lesser GNU General Public License for more details.
+
+ You should have received a copy of the Lesser GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+
+#include "zmq.h"
+#include "org_zmq_Message.h"
+
+static jfieldID msg_handle_fid = NULL;
+
+static void
+raise_exception (JNIEnv *env, int err)
+{
+ // Get exception class.
+ jclass exception_class = env->FindClass ("java/lang/Exception");
+ assert (exception_class);
+
+ // Get text description of the exception.
+ const char *err_msg = strerror (err);
+
+ // Raise the exception.
+ int rc = env->ThrowNew (exception_class, err_msg);
+ assert (rc == 0);
+
+ // Free the local ref.
+ env->DeleteLocalRef (exception_class);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Message_construct (JNIEnv *env, jobject obj)
+{
+ if (msg_handle_fid == NULL) {
+ jclass cls = env->GetObjectClass (obj);
+ assert (cls != NULL);
+ msg_handle_fid = env->GetFieldID (cls, "msgHandle", "J");
+ assert (msg_handle_fid != NULL);
+ env->DeleteLocalRef (cls);
+ }
+
+ zmq_msg_t *msg = (zmq_msg_t*) malloc (sizeof (zmq_msg_t));
+ if (msg == NULL) {
+ raise_exception (env, ENOMEM);
+ return;
+ }
+
+ int rc = zmq_msg_init (msg);
+ assert (rc == 0);
+ env->SetLongField (obj, msg_handle_fid, (jlong) msg);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Message_constructWithData (JNIEnv *env, jobject obj,
+ jbyteArray payload)
+{
+ if (msg_handle_fid == NULL) {
+ jclass cls = env->GetObjectClass (obj);
+ assert (cls != NULL);
+ msg_handle_fid = env->GetFieldID (cls, "msgHandle", "J");
+ assert (msg_handle_fid != NULL);
+ env->DeleteLocalRef (cls);
+ }
+
+ zmq_msg_t *msg = (zmq_msg_t*) malloc (sizeof (zmq_msg_t));
+ if (msg == NULL) {
+ raise_exception (env, ENOMEM);
+ return;
+ }
+
+ jsize array_size = env->GetArrayLength (payload);
+ jbyte *array_data = env->GetByteArrayElements (payload, NULL);
+
+ int rc = zmq_msg_init_size (msg, array_size);
+ assert (rc == 0);
+
+ memcpy (zmq_msg_data (msg), array_data, array_size);
+ env->ReleaseByteArrayElements (payload, array_data, JNI_ABORT);
+
+ env->SetLongField (obj, msg_handle_fid, (jlong) msg);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Message_finalize (JNIEnv *env, jobject obj)
+{
+ zmq_msg_t *msg = (zmq_msg_t*) env->GetLongField (obj, msg_handle_fid);
+ assert (msg);
+
+ int rc = zmq_msg_close (msg);
+ assert (rc == 0);
+
+ free (msg);
+}
+
+JNIEXPORT jbyteArray JNICALL
+Java_org_zmq_Message_getMsgPayload (JNIEnv *env, jobject obj)
+{
+ zmq_msg_t *msg = (zmq_msg_t*) env->GetLongField (obj, msg_handle_fid);
+ assert (msg);
+
+ jsize msg_size = zmq_msg_size (msg);
+ jbyte *msg_data = (jbyte*) zmq_msg_data (msg);
+
+ jbyteArray payload = env->NewByteArray (msg_size);
+ if (payload == NULL)
+ return NULL;
+
+ env->SetByteArrayRegion (payload, 0, msg_size, msg_data);
+ assert (!env->ExceptionCheck ());
+
+ return payload;
+}
+
+JNIEXPORT jint JNICALL
+Java_org_zmq_Message_getMsgType (JNIEnv *env, jobject obj)
+{
+ zmq_msg_t *msg = (zmq_msg_t*) env->GetLongField (obj, msg_handle_fid);
+ assert (msg);
+
+ return (jint) zmq_msg_type (msg);
+}
diff --git a/java/Socket.cpp b/java/Socket.cpp
new file mode 100644
index 0000000..eb3c1e3
--- /dev/null
+++ b/java/Socket.cpp
@@ -0,0 +1,276 @@
+/*
+ Copyright (c) 2007-2009 FastMQ Inc.
+
+ This file is part of 0MQ.
+
+ 0MQ is free software; you can redistribute it and/or modify it under
+ the terms of the Lesser GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ 0MQ is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ Lesser GNU General Public License for more details.
+
+ You should have received a copy of the Lesser GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+
+#include "zmq.h"
+#include "org_zmq_Socket.h"
+
+static jfieldID socket_handle_fid = NULL;
+static jclass msg_class = NULL;
+static jmethodID msg_constructor;
+static jmethodID get_msg_handle_mid = NULL;
+static jmethodID create_socket_mid = NULL;
+
+static void
+raise_exception (JNIEnv *env, int err)
+{
+ // Get exception class.
+ jclass exception_class = env->FindClass ("java/lang/Exception");
+ assert (exception_class);
+
+ // Get text description of the exception.
+ const char *err_msg = strerror (err);
+
+ // Raise the exception.
+ int rc = env->ThrowNew (exception_class, err_msg);
+ assert (rc == 0);
+
+ // Free the local ref.
+ env->DeleteLocalRef (exception_class);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Socket_construct (JNIEnv *env, jobject obj, jobject context,
+ jint type)
+{
+ if (socket_handle_fid == NULL) {
+ jclass cls = env->GetObjectClass (obj);
+ assert (cls);
+ socket_handle_fid = env->GetFieldID (cls, "socketHandle", "J");
+ assert (socket_handle_fid);
+ env->DeleteLocalRef (cls);
+ }
+
+ if (create_socket_mid == NULL) {
+ jclass cls = env->FindClass ("org/zmq/Context");
+ assert (cls);
+ create_socket_mid = env->GetMethodID (cls, "createSocket", "(I)J");
+ assert (create_socket_mid);
+ env->DeleteLocalRef (cls);
+ }
+
+ if (msg_class == NULL) {
+ jclass cls = env->FindClass ("org/zmq/Message");
+ assert (cls);
+
+ msg_constructor = env->GetMethodID (cls, "<init>", "()V");
+ assert (msg_constructor);
+
+ get_msg_handle_mid = env->GetMethodID (cls, "getMsgHandle", "()J");
+ assert (get_msg_handle_mid);
+
+ msg_class = (jclass) env->NewGlobalRef (cls);
+ assert (msg_class);
+ env->DeleteLocalRef (cls);
+ }
+
+ void *s = (void *) env->CallLongMethod (context, create_socket_mid, type);
+ if (env->ExceptionCheck ())
+ return;
+
+ env->SetLongField (obj, socket_handle_fid, (jlong) s);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Socket_finalize (JNIEnv *env, jobject obj)
+{
+ void *s = (void*) env->GetLongField (obj, socket_handle_fid);
+ assert (s);
+ int rc = zmq_close (s);
+ assert (rc == 0);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Socket_setHwm (JNIEnv *env, jobject obj, jlong hwm)
+{
+ void *s = (void*) env->GetLongField (obj, socket_handle_fid);
+ assert (s);
+ int rc = zmq_setsockopt (s, ZMQ_HWM, &hwm, sizeof hwm);
+ if (rc == -1)
+ raise_exception (env, errno);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Socket_setLwm (JNIEnv *env, jobject obj, jlong lwm)
+{
+ void *s = (void*) env->GetLongField (obj, socket_handle_fid);
+ assert (s);
+
+ int rc = zmq_setsockopt (s, ZMQ_LWM, &lwm, sizeof lwm);
+ if (rc == -1)
+ raise_exception (env, errno);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Socket_setSwap (JNIEnv *env, jobject obj, jlong swap_size)
+{
+ void *s = (void*) env->GetLongField (obj, socket_handle_fid);
+ assert (s);
+
+ int rc = zmq_setsockopt (s, ZMQ_SWAP, &swap_size, sizeof swap_size);
+ if (rc == -1)
+ raise_exception (env, errno);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Socket_setMask (JNIEnv *env, jobject obj, jlong mask)
+{
+ void *s = (void*) env->GetLongField (obj, socket_handle_fid);
+ assert (s);
+
+ int rc = zmq_setsockopt (s, ZMQ_MASK, &mask, sizeof mask);
+ if (rc == -1)
+ raise_exception (env, errno);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Socket_setAffinity (JNIEnv *env, jobject obj, jlong affinity)
+{
+ void *s = (void*) env->GetLongField (obj, socket_handle_fid);
+ assert (s);
+
+ int rc = zmq_setsockopt (s, ZMQ_AFFINITY, &affinity, sizeof affinity);
+ if (rc == -1)
+ raise_exception (env, errno);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Socket_setIdentity (JNIEnv *env, jobject obj, jstring identity)
+{
+ void *s = (void*) env->GetLongField (obj, socket_handle_fid);
+ assert (s);
+
+ if (identity == NULL) {
+ raise_exception (env, EINVAL);
+ return;
+ }
+
+ const char *c_identity = env->GetStringUTFChars (identity, NULL);
+ if (c_identity == NULL)
+ return;
+
+ int rc = zmq_setsockopt (s, ZMQ_IDENTITY, c_identity, sizeof c_identity);
+ env->ReleaseStringUTFChars (identity, c_identity);
+
+ if (rc == -1)
+ raise_exception (env, errno);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Socket_bind (JNIEnv *env, jobject obj, jstring addr)
+{
+ void *s = (void*) env->GetLongField (obj, socket_handle_fid);
+ assert (s);
+
+ if (addr == NULL) {
+ raise_exception (env, EINVAL);
+ return;
+ }
+
+ const char *c_addr = env->GetStringUTFChars (addr, NULL);
+ if (c_addr == NULL)
+ return;
+
+ int rc = zmq_bind (s, c_addr);
+ env->ReleaseStringUTFChars (addr, c_addr);
+
+ if (rc == -1)
+ raise_exception (env, errno);
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Socket_connect (JNIEnv *env, jobject obj, jstring addr)
+{
+ void *s = (void*) env->GetLongField (obj, socket_handle_fid);
+ assert (s);
+
+ if (addr == NULL) {
+ raise_exception (env, EINVAL);
+ return;
+ }
+
+ const char *c_addr = env->GetStringUTFChars (addr, NULL);
+ if (c_addr == NULL)
+ return;
+
+ int rc = zmq_connect (s, c_addr);
+ env->ReleaseStringUTFChars (addr, c_addr);
+
+ if (rc == -1)
+ raise_exception (env, errno);
+}
+
+JNIEXPORT jint JNICALL
+Java_org_zmq_Socket_send (JNIEnv *env, jobject obj, jobject msg, jlong flags)
+{
+ void *s = (void*) env->GetLongField (obj, socket_handle_fid);
+ assert (s);
+
+ zmq_msg_t *zmq_msg = (zmq_msg_t *)
+ env->CallLongMethod (msg, get_msg_handle_mid);
+
+ if (env->ExceptionCheck ())
+ return -1;
+
+ int rc = zmq_send (s, zmq_msg, (int) flags);
+ if (rc == -1) {
+ raise_exception (env, errno);
+ return -1;
+ }
+
+ return rc;
+}
+
+JNIEXPORT void JNICALL
+Java_org_zmq_Socket_flush (JNIEnv *env, jobject obj)
+{
+ void *s = (void*) env->GetLongField (obj, socket_handle_fid);
+ assert (s);
+
+ zmq_flush (s);
+}
+
+JNIEXPORT jobject JNICALL
+Java_org_zmq_Socket_recv (JNIEnv *env, jobject obj, jlong flags)
+{
+ void *s = (void*) env->GetLongField (obj, socket_handle_fid);
+ assert (s);
+
+ jobject msg = env->NewObject (msg_class, msg_constructor);
+ if (msg == NULL)
+ return NULL;
+
+ zmq_msg_t *zmq_msg = (zmq_msg_t*)
+ env->CallLongMethod (msg, get_msg_handle_mid);
+
+ if (env->ExceptionCheck ())
+ return NULL;
+
+ int rc = zmq_recv (s, zmq_msg, (int) flags);
+ if (rc == -1) {
+ raise_exception (env, errno);
+ return NULL;
+ }
+
+ return msg;
+}
diff --git a/java/org/zmq/Context.java b/java/org/zmq/Context.java
new file mode 100644
index 0000000..8bc4d57
--- /dev/null
+++ b/java/org/zmq/Context.java
@@ -0,0 +1,47 @@
+/*
+ Copyright (c) 2007-2009 FastMQ Inc.
+
+ This file is part of 0MQ.
+
+ 0MQ is free software; you can redistribute it and/or modify it under
+ the terms of the Lesser GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ 0MQ is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ Lesser GNU General Public License for more details.
+
+ You should have received a copy of the Lesser GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package org.zmq;
+
+public class Context {
+ static {
+ System.loadLibrary("jzmq");
+ }
+
+ /**
+ * Class constructor.
+ *
+ * @param appThreads maximum number of application threads.
+ * @param ioThreads size of the threads pool to handle I/O operations.
+ */
+ public Context (int appThreads, int ioThreads) {
+ construct (appThreads, ioThreads);
+ }
+
+ public native long createSocket (int type);
+
+ /** Initialize the JNI interface */
+ protected native void construct (int appThreads, int ioThreads);
+
+ /** Free resources used by JNI driver. */
+ protected native void finalize ();
+
+ /** Opaque data used by JNI driver. */
+ private long contextHandle;
+}
diff --git a/java/org/zmq/Message.java b/java/org/zmq/Message.java
new file mode 100644
index 0000000..3691410
--- /dev/null
+++ b/java/org/zmq/Message.java
@@ -0,0 +1,66 @@
+/*
+ Copyright (c) 2007-2009 FastMQ Inc.
+
+ This file is part of 0MQ.
+
+ 0MQ is free software; you can redistribute it and/or modify it under
+ the terms of the Lesser GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ 0MQ is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ Lesser GNU General Public License for more details.
+
+ You should have received a copy of the Lesser GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package org.zmq;
+
+public class Message {
+ static {
+ System.loadLibrary("jzmq");
+ }
+
+ /**
+ * Class constructor.
+ */
+ public Message () {
+ construct ();
+ }
+
+ public Message (byte [] payload) {
+ constructWithData (payload);
+ }
+
+ /**
+ * Get message payload.
+ */
+ public native byte [] getMsgPayload ();
+
+ /**
+ * Get message type.
+ */
+ public native int getMsgType ();
+
+ /**
+ * Get low-level message handler.
+ */
+ public long getMsgHandle () {
+ return msgHandle;
+ }
+
+ /** Initialize the JNI interface */
+ protected native void construct ();
+
+ protected native void constructWithData (byte [] payload);
+
+ /** Free resources used by JNI driver. */
+ protected native void finalize ();
+
+ /** Opaque data used by JNI driver. */
+ private long msgHandle;
+}
+
diff --git a/java/org/zmq/Socket.java b/java/org/zmq/Socket.java
new file mode 100644
index 0000000..3bfbfec
--- /dev/null
+++ b/java/org/zmq/Socket.java
@@ -0,0 +1,141 @@
+/*
+ Copyright (c) 2007-2009 FastMQ Inc.
+
+ This file is part of 0MQ.
+
+ 0MQ is free software; you can redistribute it and/or modify it under
+ the terms of the Lesser GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ 0MQ is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ Lesser GNU General Public License for more details.
+
+ You should have received a copy of the Lesser GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package org.zmq;
+
+public class Socket {
+ static {
+ System.loadLibrary("jzmq");
+ }
+
+ public static final int ZMQ_MAX_VSM_SIZE = 30;
+
+ public static final int ZMQ_GAP = 1;
+
+ public static final int ZMQ_DELIMITER = 31;
+
+ public static final int ZMQ_NOBLOCK = 1;
+
+ public static final int ZMQ_NOFLUSH = 2;
+
+ public static final int ZMQ_P2P = 0;
+
+ public static final int ZMQ_PUB = 1;
+
+ public static final int ZMQ_SUB = 2;
+
+ /**
+ * Class constructor.
+ *
+ * @param context
+ * @param type
+ */
+ public Socket (Context context, int type) {
+ ctx = context;
+ construct (context, type);
+ }
+
+ /**
+ * Set the high watermark on the socket.
+ *
+ * @param hwm high watermark.
+ */
+ public native void setHwm (long hwm);
+
+ /**
+ * Set the low watermark on the socket.
+ *
+ * @param lwm low watermark.
+ */
+ public native void setLwm (long lwm);
+
+ /**
+ * Set swap size.
+ *
+ * @param swap_size swap size.
+ */
+ public native void setSwap (long swap_size);
+
+ /**
+ * Set reception mask.
+ *
+ * @param mask mask.
+ */
+ public native void setMask (long mask);
+
+ /**
+ * Set affinity.
+ *
+ * @param affinity
+ */
+ public native void setAffinity (long affinity);
+
+ /**
+ * Set identity.
+ *
+ * @param identity
+ */
+ public native void setIdentity (String identity);
+
+ /**
+ * @param addr
+ */
+ public native void bind (String addr);
+
+ /**
+ * Connect.
+ *
+ * @param addr
+ */
+ public native void connect (String addr);
+
+ /**
+ * Send.
+ *
+ * @param message
+ * @param block
+ */
+ public native int send (Message msg, long flags);
+
+ /**
+ * Flush all messages sent with flush flag false down the stream.
+ */
+ public native void flush ();
+
+ /**
+ * Receive message.
+ *
+ * @param block
+ * @return
+ */
+ public native Message recv (long flags);
+
+ /** Initialize JNI driver */
+ protected native void construct (Context context, int type);
+
+ /** Free all resources used by JNI driver. */
+ protected native void finalize ();
+
+ /** Keep reference to ZMQ context so it is not garbage collected */
+ private Context ctx;
+
+ /** Opaque data used by JNI driver. */
+ private long socketHandle;
+
+}