diff --git a/project/build.scala b/project/build.scala
index 856771b..f6a4b0f 100644
--- a/project/build.scala
+++ b/project/build.scala
@@ -36,6 +36,7 @@
         "org.pegdown" % "pegdown" % "1.3.0",
         "org.apache.commons" % "commons-compress" % "1.5",
         "org.apache.commons" % "commons-email" % "1.3.1",
+        "org.apache.httpcomponents" % "httpclient" % "4.2.5",
         "com.typesafe.slick" %% "slick" % "1.0.1",
         "com.novell.ldap" % "jldap" % "2009-10-07",
         "com.h2database" % "h2" % "1.3.171",
diff --git a/src/main/scala/service/WebHookService.scala b/src/main/scala/service/WebHookService.scala
index 08d1035..d7e6bd3 100644
--- a/src/main/scala/service/WebHookService.scala
+++ b/src/main/scala/service/WebHookService.scala
@@ -17,13 +17,28 @@
   def deleteWebHookURL(owner: String, repository: String, url :String): Unit =
     Query(WebHooks).filter(_.byPrimaryKey(owner, repository, url)).delete
 
-  def sendWebHook(payload: WebHookPayload): Unit = {
+  def callWebHook(owner: String, repository: String, payload: WebHookPayload): Unit = {
     import org.json4s._
     import org.json4s.jackson.Serialization
     import org.json4s.jackson.Serialization.{read, write}
+    import org.apache.http.client.methods.HttpPost
+    import org.apache.http.impl.client.DefaultHttpClient
+
     implicit val formats = Serialization.formats(NoTypeHints)
 
-    println(write(payload))
+    val webHookURLs = getWebHookURLs(owner, repository)
+
+    if(webHookURLs.nonEmpty){
+      val json = write(payload)
+      val httpClient = new DefaultHttpClient()
+
+      webHookURLs.foreach { webHookUrl =>
+        val httpPost = new HttpPost(webHookUrl.url)
+        httpPost.getParams.setParameter("payload", json)
+        httpClient.execute(httpPost)
+        httpPost.releaseConnection()
+      }
+    }
   }
 
 }
@@ -31,8 +46,6 @@
 object WebHookService {
 
   case class WebHookPayload(
-    before: String,
-    after: String,
     ref: String,
     commits: List[WebHookCommit],
     repository: WebHookRepository)
@@ -50,9 +63,7 @@
   case class WebHookRepository(
     name: String,
     url: String,
-    pledgie: String,
     description: String,
-    homepage: String,
     watchers: Int,
     forks: Int,
     `private`: Boolean,
diff --git a/src/main/scala/servlet/GitRepositoryServlet.scala b/src/main/scala/servlet/GitRepositoryServlet.scala
index 2c15806..b2af6ea 100644
--- a/src/main/scala/servlet/GitRepositoryServlet.scala
+++ b/src/main/scala/servlet/GitRepositoryServlet.scala
@@ -12,6 +12,8 @@
 import util.{JGitUtil, Directory}
 import service._
 import WebHookService._
+import org.eclipse.jgit.diff.DiffEntry
+import org.apache.http.client.methods.HttpPost
 
 /**
  * Provides Git repository via HTTP.
@@ -57,20 +59,22 @@
     logger.debug("requestURI: " + request.getRequestURI)
     logger.debug("userName:" + userName)
 
-    val paths = request.getRequestURI.substring(request.getContextPath.length).split("/")
+    val paths      = request.getRequestURI.substring(request.getContextPath.length).split("/")
     val owner      = paths(2)
     val repository = paths(3).replaceFirst("\\.git$", "")
-    
-    logger.debug("repository:" + owner + "/" + repository)
+    val baseURL    = request.getRequestURL.toString.replaceFirst("/git/", "/").replaceFirst("\\.git/.*$", "")
 
-    receivePack.setPostReceiveHook(new CommitLogHook(owner, repository, userName))
+    logger.debug("repository:" + owner + "/" + repository)
+    logger.debug("baseURL:" + baseURL)
+
+    receivePack.setPostReceiveHook(new CommitLogHook(owner, repository, userName, baseURL))
     receivePack
   }
 }
 
 import scala.collection.JavaConverters._
 
-class CommitLogHook(owner: String, repository: String, userName: String) extends PostReceiveHook
+class CommitLogHook(owner: String, repository: String, userName: String, baseURL: String) extends PostReceiveHook
   with RepositoryService with AccountService with IssuesService with ActivityService with WebHookService {
   
   private val logger = LoggerFactory.getLogger(classOf[CommitLogHook])
@@ -112,22 +116,24 @@
           }
         }
 
-        // TODO call web hook
+        // call web hook
         val repositoryInfo  = getRepository(owner, repository, "").get
         val repositoryOwner = getAccountByUserName(owner)
+
         val payload = WebHookPayload(
-          before  = "",
-          after   = "",
-          ref     = "",
+          ref     = command.getRefName,
           commits = newCommits.map { commit =>
+            val diffs = JGitUtil.getDiffs(git, commit.id, false)
+
             WebHookCommit(
               id        = commit.id,
               message   = commit.fullMessage,
               timestamp = commit.time.toString,
-              url       = "",
-              added     = Nil,
-              removed   = Nil,
-              modified  = Nil,
+              url       = baseURL + "/commit/" + commit.id,
+              added     = diffs._1.collect { case x if(x.changeType == DiffEntry.ChangeType.ADD)    => x.newPath },
+              removed   = diffs._1.collect { case x if(x.changeType == DiffEntry.ChangeType.DELETE) => x.oldPath },
+              modified  = diffs._1.collect { case x if(x.changeType != DiffEntry.ChangeType.ADD &&
+                                                       x.changeType != DiffEntry.ChangeType.DELETE) => x.newPath },
               author    = WebHookUser(
                 name  = commit.committer,
                 email = commit.mailAddress
@@ -136,10 +142,8 @@
           }.toList,
           repository = WebHookRepository(
             name        = repositoryInfo.name,
-            url         = "",
-            pledgie     = "",
+            url         = baseURL,
             description = repositoryInfo.repository.description.getOrElse(""),
-            homepage    = "",
             watchers    = 0,
             forks       = repositoryInfo.forkedCount,
             `private`   = repositoryInfo.repository.isPrivate,
@@ -150,8 +154,7 @@
           )
         )
 
-        // TODO invoke WebHookService
-        sendWebHook(payload)
+        callWebHook(owner, repository, payload)
       }
     }
     // update repository last modified time.