[{"_1":2,"_155":-5,"_156":-5},"loaderData",{"_3":4,"_13":14,"_21":22,"_134":135},"root",{"_5":-5,"_6":-7,"_7":8,"_9":-7,"_10":11,"_12":-7},"currentUser","primaryEmail","siteVerification","6LeIxAcTAAAAAJcZVRqyHh71UMIEGNQ_MXjiZKhI","toast","enableDev",false,"incidentStatus","routes/_layout",{"_15":-5,"_16":17,"_18":17,"_19":11,"_20":11},"username","isAskGordonEnabled",true,"isUsingNewTemplate","showMinimalLanding","showHoneypotTrap","routes/_layout.r.$namespace.$reponame",{"_23":24,"_25":-5,"_26":11,"_27":11,"_28":29,"_30":31,"_32":-5,"_33":11,"_34":35,"_84":-5,"_85":86,"_125":-5,"_126":11,"_127":17,"_128":11,"_129":-5,"_130":11,"_131":-5,"_132":133},"canonicalUrl","https://hub.docker.com/r/omercnet/xrtb/tags","mcpServer","canSeeDockerfile","canSeeAutobuilds","namespace","omercnet","reponame","xrtb","cloudBuildSource","isAutobuildsAvailable","repo",{"_36":37,"_38":39,"_41":42,"_43":44,"_45":11,"_46":47,"_48":49,"_50":51,"_53":31,"_28":29,"_54":55,"_56":40,"_57":58,"_59":60,"_61":62,"_63":-5,"_64":58,"_65":66,"_67":11,"_68":29,"_69":70,"_75":17,"_76":77,"_81":29,"_82":83},"categories",[],"content_types",[40],"image","date_registered","2017-04-24T06:14:56.583257Z","description","A Real Time Bidding (RTB) 2.1 bidding engine written in Java 1.8 http://rtb4free.com","is_private","last_updated","2017-04-24T06:25:19.236528Z","last_modified","2024-10-16T13:48:34.145251Z","media_types",[52],"application/vnd.docker.container.image.v1+json","name","pull_count",1276,"repository_type","star_count",0,"status",1,"status_description","active","source","collaborator_count","full_description","XRTB\n=====================\n\nNOTE: THIS IS A WORK IN PROGRESS\n\n===========================\n\nA Real Time Bidding (RTB) 2.3 engine written in Java 1.8\n\nThis RTB project contains 3 major components: 1) A Real Time Bidding engine; 2) A Test page for sending\ntest bids to the bidder; 3) A campaign manager for creating advertising campaigns.\n\nThis project is for those fairly familiar with RTB. With a basic understanding of RTB, this project will get you up and running with a commercial grade bidder in a short period of time.\n\nNote, a major component of a commercial RTB system is a database for doing all those production things like campaign management, bid tracking, win handling and click through accounting. This project doesn't include any of that, However, the XRTB uses a publish/subscribe system (ZeroMQ) that will allow you to connect these functions of the bidder into your own custom database.\n\nA production bidding enterprise would most likely require multiple bidding engines running behind a firewall. This project does not provide NGINX or AWS Load Balancer (or similar) infrastructure for this, you will need to tailor the \nadministration of the XRTB to deal with these production issues. The XRTB comes out of the box ready to run in\na multi-server bidding farm, you just need to lash it up and administer it.\n\n\nBUILDING THE SYSTEM\n=======================\nThis is a maven project.\n\nYou will need Maven installed to build the system. The libraries required are automatically retrieved by Maven. To see the dependencies, Look in the pom.xml file\n\nIf you use Eclipse make sure you use this as a maven project\n\nNote, there is a .gitignore file included.\n\nBuild the Site\n----------------------------------------\nNow use Maven to build the system\n\n$mvn site\n\n----> This will compile the sources, generate the API docs and the JUNIT tests.\n\nThe API documentation in target/site/apidocs/allclasses-frame.html\nThe Surefire reports are in target/site/surefire-report.html\n\nCreate the All Inclusive Jar File\n--------------------------------------\nNow create the all inclusive jar file:\n\n$mvn assembly:assembly -DdescriptorId=jar-with-dependencies -Dmaven.test.skip=true\n\nNow you have to decide whether to use Aerosspike (for multi-bidder support) or Cache2k (standalone)\n\nMAKE YOUR LOCAL CONFIGURATION FILES\n=============================================\nRTB4FREE has two configuration files. The sample database is called \"database.json\" which is used to initialize the \nAerospike database, or, if not using Aerospike, to act as the database for a stand a lone bidder. The second \nconfiguration file is Campaigns/payday.json which sets up the operational parameters for your bidder. \nNeither of these files exist after you do the GIT clone (or subsequent GIT pull). You need to make these two \nfiles on your instance by copying the samples:\n\n$cd XRTB\n$mkdir logs\n$cp sampledb.json database.json\n$cp Campaigns/samplecfg.json Campaigns/payday.json\n\t\t\t\t\t\t\t\t\t\nIf you forget this step, RTB4FREE will not start. These files are kept local on your instance so that changes \nyou make to Campaigns/payday.json and database.json don't block your ability to GIT pull to get updates for the bidder.\n\n\nTHERE ARE 2 VERSIONS OF RTB4FREE\n=============================================\nRTB4FREE comes in 2 versions. One is a standalone system, and is intended for running on a single instance. It requires\nno Aerospike support. Instead it uses an embedded Cache2k cache. Use this version if you just want to play around with the\nsystem. If you plan to build a production DSP with multiple bidders, use the Aerospike Enabled.\n\n\nCACHE2K (NO AEROSPIKE) ENABLED RTB4FREE\n=============================================\nThis is a stand-alone system, and requires no Aerospike support. Notwithstanding any ability to scale to multiple\nbidders - it is the fastest version of RTB4FREE. \n\nInstead of a distributed Aerospike-based cache, the Cache2k system is embedded in the bidder.\n\nStep 1\n--------------------------------------------------\nModify the Campaigns/payday.json file as follows: Look for the \"aerospike\" object Change it's name\nto NOaerospike. When done it will look like this:\n\n\"NOaerospike\": {\n\t\"host\": \"localhost\",\n\t\"port\": 3000\n},\n\nStep 2\n--------------------------------------------------\nModify localhost in Campaigns/payday.json and ./database.json. If you are going to test everything with localhost, you\ncan skip this step. Otherwise, you need to change pixel-Tracking, winUrl and redirect-url in payday.json and localhost \nentries in database,json. Fortunately, we have a build in program for that. Presume your IP address is 192.188.62.6. \nThis will change the all files for you:\n\n$cd XRTB\n$tools/config-website -address 192.188.62.6\n\n\n\nStep 3\n-------------------------------------------------\nStart the RTB4FREE FREE bidder and test it:\n\nIn one window do:\n\n$cd XRTB\n$tools/rtb4free\n\nIn another window send it a bid request:\n\n$cd XRTB/shell\n$./curltest.sh\n\nYou should see the JSON returned for the bid request. An example is shown here:\n\n{\"seatbid\":[{\"seat\":\"seat1\",\"bid\":[{\"impid\":\"35c22289-06e2-48e9-a0cd-94aeb79fab43-1\",\"id\":\"35c22289-06e2-48e9-a0cd-94aeb79fab43\",\"price\":1.0,\"adid\":\"ben:payday\",\"nurl\":\"http://localhost:8080/rtb/win/smaato/${AUCTION_PRICE}/42.378/-71.227/ben:payday/23-1-skiddoo/35c22289-06e2-48e9-a0cd-94aeb79fab43\",\"cid\":\"ben:payday\",\"crid\":\"23-1-skiddoo\",\"iurl\":\"http://localhost:8080/images/320x50.jpg?adid=ben:payday&bidid=35c22289-06e2-48e9-a0cd-94aeb79fab43\",\"adomain\": [\"originator.com\"],\"adm\":\"http://localhost:8080/redirect/exchange=smaato/ben:payday/creative_id=23-1-skiddoo/price=${AUCTION_PRICE}/lat=42.378/lon=-71.227/bid_id=35c22289-06e2-48e9-a0cd-94aeb79fab43?url=http://localhost:8080/contact.html?99201&adid=ben:payday&crid=23-1-skiddoohttp://localhost:8080/images/320x50.jpg?adid=ben:payday&bidid=35c22289-06e2-48e9-a0cd-94aeb79fab4332050http://localhost:8080/pixel/exchange=smaato/ad_id=ben:payday/creative_id=23-1-skiddoo/35c22289-06e2-48e9-a0cd-94aeb79fab43/price=${AUCTION_PRICE}/lat=42.378/lon=-71.227/bid_id=35c22289-06e2-48e9-a0cd-94aeb79fab43\"}]}],\"id\":\"35c22289-06e2-48e9-a0cd-94aeb79fab43\",\"bidid\":\"35c22289-06e2-48e9-a0cd-94aeb79fab43\"}\n\n\nAEROSPIKE (MULTI BIDDER) ENABLED RTB4FREE\n=============================================\nThis is the multi-bidder enabled version of RTB4FREE. If you plan to run more than one bidder instance,\nor a separate instance to handle win notifications you need to use this version of RTB4FREE.\n\nStep 1\n--------------------------------------------------\nGet Aerospike up and running somewhere on your network. Look here: www.aerospike.com\n\nStep 2\n--------------------------------------------------\nModify localhost in Campaigns/payday.json and ./database.json. If you are going to test everything with localhost, you\ncan skip this step. Otherwise, you need to change pixel-Tracking, winUrl and redirect-url in payyday.json and localhost \nentries in database,json. Fortunately, we have a build in program for that. Presume your IP address is 192.188.62.6 and Aerospike\nis running on the same bidder: This will change the all files for you:\n\n$cd XRTB\n$tools/config-website -address 192.188.62.6\n\nOr, if Aerospike is on a different host, add the additional -aero parameter to include that host. For example, presume\nAerospike is running on 192.188.62.66:\n\n$cd XRTB\n$tools/config-website -address 192.188.62.6 -aero 192.188.62.66\n\nStep 3\n---------------------------------------------------\nLoad the database.json into Aerospike. If Aerospike is on the same server as the bidder:\n\n$cd XRTB\n$tools/load-database\n\nOr, if Aerospike is running on a different host, say 192.188.62.66 use:\n\n$cd XRTB\n$tools/load-database -db database.json -aero 192.188.62.66:3000\n\nStep 5\n----------------------------------------------------\nStart the RTB4FREE bidder and test it:\n\nIn one window do:\n\n$cd XRTB\n$tools/rtb4free\n\nIn another window send it a bid request:\n\n$cd XRTB/shell\n$./curltest.sh\n\nYou should see the JSON returned for the bid request. An example is shown here:\n\n{\"seatbid\":[{\"seat\":\"seat1\",\"bid\":[{\"impid\":\"35c22289-06e2-48e9-a0cd-94aeb79fab43-1\",\"id\":\"35c22289-06e2-48e9-a0cd-94aeb79fab43\",\"price\":1.0,\"adid\":\"ben:payday\",\"nurl\":\"http://localhost:8080/rtb/win/smaato/${AUCTION_PRICE}/42.378/-71.227/ben:payday/23-1-skiddoo/35c22289-06e2-48e9-a0cd-94aeb79fab43\",\"cid\":\"ben:payday\",\"crid\":\"23-1-skiddoo\",\"iurl\":\"http://localhost:8080/images/320x50.jpg?adid=ben:payday&bidid=35c22289-06e2-48e9-a0cd-94aeb79fab43\",\"adomain\": [\"originator.com\"],\"adm\":\"http://localhost:8080/redirect/exchange=smaato/ben:payday/creative_id=23-1-skiddoo/price=${AUCTION_PRICE}/lat=42.378/lon=-71.227/bid_id=35c22289-06e2-48e9-a0cd-94aeb79fab43?url=http://localhost:8080/contact.html?99201&adid=ben:payday&crid=23-1-skiddoohttp://localhost:8080/images/320x50.jpg?adid=ben:payday&bidid=35c22289-06e2-48e9-a0cd-94aeb79fab4332050http://localhost:8080/pixel/exchange=smaato/ad_id=ben:payday/creative_id=23-1-skiddoo/35c22289-06e2-48e9-a0cd-94aeb79fab43/price=${AUCTION_PRICE}/lat=42.378/lon=-71.227/bid_id=35c22289-06e2-48e9-a0cd-94aeb79fab43\"}]}],\"id\":\"35c22289-06e2-48e9-a0cd-94aeb79fab43\",\"bidid\":\"35c22289-06e2-48e9-a0cd-94aeb79fab43\"}\n\n\nRUNNING RTB4FREE AS A SERVICE (SYSTEMD)\n=====================================\nYou can run RTB4FREE as an systemd service. There is an systemd script located at ./XRTB/rtb4free.service.\n\n$sudp cp rtb4free.service /etc/systemd/system\n$sudo systemctl daemon-reload\n\nStart the Bidder\n-------------------------------\n$sudo systemctl start rtb4free\n\nStop the Bidder\n--------------------------------\nsudo systemctl stop rtb4free\n\nThe Log File\n--------------------------------\nLog file is located at /var/log/rtb4free.log\n\n\nTHE AEROSPILE-DISTRIBUTED DATABASE\n=====================================\nThe AEROSPIKE enabled RTB4FFREE uses a shared JAVA ConcurrentHashMap backed in Aerospike, that allows all bidders to have\naccess to the advertising campaigns. Likely this would be replaced by your own DBMS, but for RTB4FREE\nwe simply use the shared object. Before RTB4FREE can be used, the database has to be loaded into Aerospike first.\nThis is done with:\n\n\t$cd XRTB\n\t$tools/load-database\n\nThis will load XRTB/database.json file into the Aerospike system running on localhost. To change the parameters of DbTools, \nlook at the JAVADOC in target/site/tools/DbTools.html\n\nThe database in Aerospke is where all the User/Campaign records are stored, but, then to run these campaigns, \nyou must tell the bidders to pull these campaigns into their local memory (using a ZeroMQ command). The database is the static location for the Users and their Campaigns. To 'run' a campaign' you load it into the bidders local memory. All the bidders have a ConcurrentHashMap that comprises this database, and it is shared across all the bidders.\n\nIn a commercial setting, you would likely replace this Database part of RTB4FREE with your own database management system.\n\nFor information on how to configure campaigns in the RTB4FREE bidder, look on the RTB4FREE web site\nhere\"\n\nCONFIGURING THE BIDDER.\n=====================================\nIn order to run the bidder, you will need to load a campaign into the bidders memory and setup some operational parameters.\n These parameters are stored in a JSON file the bidder uses when it starts. There is a sample initialization file called \n\"./Campaigns/payday.json' you can use to get started. The file describes the operational parameters of the bidder. \nLook in http://rtb4free.com/details_new.html for an in depth analysis of the configuration file. Also, once you get the\nbidder running, you can use the System Consolse to change the parameters using the web interface, described here:\nhttp://rtb4free.com/admin-mgmt.html\n\nHowever, here is an example file, and a brief over\n\n{\n \"forensiq\" : {\n \"threshhold\" : 0,\n \"ck\" : \"none\",\n \"endpoint\" : \"\",\n \"bidOnError\" : \"false\"\n },\n \"app\" : {\n \"stopped\" : false,\n \"ttl\" : 300,\n \"deadmanswitch\" : null,\n \"multibid\" : false,\n \"pixel-tracking-url\" : \"http://localhost:8080/pixel\",\n \"winurl\" : \"http://localhost:8080/rtb/win\",\n \"redirect-url\" : \"http://localhost:8080/redirect\",\n \"adminPort\" : 0,\n \"adminSSL\" : false,\n \"password\" : \"startrekisbetterthanstarwars\",\n \"verbosity\" : {\n \"level\" : -3,\n \"nobid-reason\" : false\n },\n \"geotags\" : {\n \"states\" : \"\",\n \"zipcodes\" : \"\"\n },\n \"aerospike\" : {\n \"host\" : \"localhost\",\n \"maxconns\" : 300,\n \"port\" : 3000\n },\n \"zeromq\" : {\n \"bidchannel\" : \"tcp://*:5571&bids\",\n \"responses\" : \"tcp://*:5575&responses\",\n \"nobid\" : \"\",\n \"winchannel\" : \"tcp://*:5572&wins\",\n \"requests\" : \"file://logs/request&time=30\",\n \"logger\" : \"tcp://*:5574&logs\",\n \"clicks\" : \"tcp://*:5573&clicks\",\n \"subscribers\" : {\n \"hosts\" : [ \"localhost\", \"192.168.1.167\" ],\n \"commands\" : \"5580\"\n },\n \"status\" : \"file://logs/status&time=30\"\n },\n \"template\" : {\n \"default\" : \"{creative_forward_url}\",\n \"exchange\" : {\n \"adx\" : \"\",\n \"mobclix\" : \"\",\n \"nexage\" : \"

\",\n \"smartyads\" : \"{creative_forward_url}\",\n \"atomx\" : \"{creative_forward_url}\",\n \"adventurefeeds\" : \"{creative_forward_url}\",\n \"gotham\" : \"{creative_forward_url}\",\n \"epomx\" : \"{creative_forward_url}\",\n \"citenko\" : \"{creative_forward_url}\",\n \"kadam\" : \"{creative_forward_url}\",\n \"taggify\" : \"{creative_forward_url}\",\n \"cappture\" : \"cappture/{creative_forward_url}\",\n \"republer\" : \"{creative_forward_url}\",\n \"admedia\" : \"{creative_forward_url}\",\n \"ssphwy\" : \"{creative_forward_url}\",\n \"privatex\" : \"

\",\n \"smaato\" : \"richMediaBeacon='%%smaato_ct_url%%'; script='{creative_forward_url}'; clickurl='{redirect_url}/exchange={pub}/{ad_id}/creative_id={creative_id}/price=${AUCTION_PRICE}/lat={lat}/lon={lon}/bid_id={bid_id}?url={creative_forward_url}'; imageurl='{creative_image_url}'; pixelurl='{pixel_url}/exchange={pub}/ad_id={ad_id}/creative_id={creative_id}/{bid_id}/price=${AUCTION_PRICE}/lat={lat}/lon={lon}/bid_id={bid_id}';\",\n \"pubmatic\" : \"{creative_forward_url}\"\n }\n },\n \"campaigns\" : [ {\n \"name\" : \"ben\",\n \"id\" : \"ben:payday\"\n } ]\n },\n \"ssl\" : {\n \"setKeyStorePath\" : \"data/keystore.jks\",\n \"setKeyStorePassword\" : \"password\",\n \"setKeyManagerPassword\" : \"password\"\n },\n \"seats\" : [ {\n \"name\" : \"adventurefeeds\",\n \"id\" : \"adventurefeedid\",\n \"bid\" : \"/rtb/bids/adventurefeeds=com.xrtb.exchanges.Adventurefeeds\"\n },\n {\n \"name\" : \"adprudence\",\n \"id\" : \"adprudenceid\",\n \"bid\" : \"/rtb/bids/adprudence=com.xrtb.exchanges.Adprudence\"\n }, {\n \"name\" : \"citenko\",\n \"id\" : \"citenkoif\",\n \"bid\" : \"/rtb/bids/citenko=com.xrtb.exchanges.Inspector\"\n }, {\n \"name\" : \"kadam\",\n \"id\" : \"kadamid\",\n \"bid\" : \"/rtb/bids/kadam=com.xrtb.exchanges.Kadam\"\n }, {\n \"name\" : \"gotham\",\n \"id\" : \"gothamid\",\n \"bid\" : \"/rtb/bids/gotham=com.xrtb.exchanges.Gotham\"\n }, {\n \"name\" : \"atomx\",\n \"id\" : \"atomxseatid\",\n \"bid\" : \"/rtb/bids/atomx=com.xrtb.exchanges.Atomx\"\n }, {\n \"name\" : \"smartyads\",\n \"id\" : \"smartypants\",\n \"bid\" : \"/rtb/bids/smartyads=com.xrtb.exchanges.Smartyads\"\n }, {\n \"name\" : \"nexage\",\n \"id\" : \"99999999\",\n \"bid\" : \"/rtb/bids/nexage=com.xrtb.exchanges.Nexage\"\n }, {\n \"name\" : \"privatex\",\n \"id\" : \"5555555\",\n \"bid\" : \"/rtb/bids/privatex=com.xrtb.exchanges.Privatex\"\n }, {\n \"name\" : \"fyber\",\n \"id\" : \"seat1\",\n \"bid\" : \"/rtb/bids/fyber=com.xrtb.exchanges.Fyber\"\n }, {\n \"name\" : \"smaato\",\n \"id\" : \"seat1\",\n \"bid\" : \"/rtb/bids/smaato=com.xrtb.exchanges.Smaato\"\n }, {\n \"name\" : \"epomx\",\n \"id\" : \"seat1\",\n \"bid\" : \"/rtb/bids/epomx=com.xrtb.exchanges.Epomx\"\n }, {\n \"name\" : \"cappture\",\n \"id\" : \"capptureseatid\",\n \"bid\" : \"/rtb/bids/cappture=com.xrtb.exchanges.Cappture\"\n }, {\n \"name\" : \"taggify\",\n \"id\" : \"taggifyid\",\n \"bid\" : \"/rtb/bids/taggify=com.xrtb.exchanges.Taggify\"\n }, {\n \"name\" : \"republer\",\n \"id\" : \"republerid\",\n \"bid\" : \"/rtb/bids/republer=com.xrtb.exchanges.Republer\"\n }, {\n \"name\" : \"admedia\",\n \"id\" : \"admediaid\",\n \"bid\" : \"/rtb/bids/admedia=com.xrtb.exchanges.AdMedia\"\n }, {\n \"name\" : \"ssphwy\",\n \"id\" : \"ssphwyid\",\n \"bid\" : \"/rtb/bids/ssphwy=com.xrtb.exchanges.SSPHwy\"\n }, {\n \"name\" : \"pubmatic\",\n \"id\" : \"pubmaticid\",\n \"bid\" : \"/rtb/bids/pubmatic=com.xrtb.exchanges.Pubmatic\"\n } ],\n \"lists\" : [ ]\n}\n\nRTB4FREE writes its logs to ZeroMQ, default channel \"tcp://*:5574\", topic is 'logs'shown in the app.zeromq object above.The \"seats\" object is a list of seat-ids used for each of the exchanges you are bidding on. The seat-id is assigned by the exchange - it's how they know whom is bidding. The name attribute defines the name of the exchange, as it will appear in all the logs. The id is the actual id name the bidder sends to the exchange as the seat id - how the exchange knows who you are. The bid attribute tells the bidder where the JAVA class is for that exchange. In the above example, 3 exchanges are described.\n\nThe \"app\" object sets up the rest of the configuration for the RTB4FREE server\n\nThe \"geotags\" object defines the location of two files used by RTB4FREE to determine state, county, and zipcode information from GPS coordinates found in the bid request. The geotags object is not required.\n\nThe app.aerospike object defines the Aerospike host the bidders will to use and where to write bids, requests, logs and wins. ONLY the wins channel must be defined - and it must be defined or you will nor receive any win notifications! Otherwise, if you want to see the requests, define the channel, likewise for bids and clicks.\n\nThe app.password defines the password used by the root login on the campaign management and system administration page.\n\nThe app.ttl defines the time to live value for bid keys in Aerospike, in seconds. This means that after 5 minutes the key is deleted - and if the WIN notification comes in you will not process it - as the key is gone. You cannot let the keys pile up forever, Aerospile will run out of memory. This is a compromise between accuracy and performance.\n\nThe app.pixel-tracking-url field defines the URL that will be called when the ad is served up.\n\nThe app.winurl defines where the exchange is to send win notifications. It is customary to split win and bid processing across 2 domains, that share the same Aerospike cache. When a bid is made, a copy is stored in Aerospike, set to expire after some period of time (app.tt;). When the win notification comes in the bid needs to be retrieved to complete the transaction with the exchange. In systems with multiple bidders, there is no way to know which XRTB will receive the win thus you cannot store the bid information in local memory.\n\nThe app.redirect-url field defines the URL to use when the user clicks your advertisement.\n\nThe app.verbosity object defines the logging level for the XRTB program. Setting app.verbosity.level to 1 means only the most critical messages are logged to ZeroMQ log channel. Set the level ever higher to obtain more log information. The logs are published to the ZeroMQ publish topic defined by zeromq.logger field. However, if you want the logger to also print on STDOUT too, set the log level to a negative value. For example, \"level\": -5 means to log all kind of stuff, and also print it in STDOUT.\n\nThe app.verbosity.nobid-reason field is for debugging and is used to tell you why the bidder did not bid. This is useful if things aren't working like you think it should. It creates a lot of output and it doubles the amount of time it takes to process a bid request. Operational useers should set this set to false. If set to true, the bidder log why the bidder chose to nobid on each creative, for each campaign.\n\nThe app.multibid flag denotes whether or not to support multiple bids for requests, the default is false.\n\nThe \"campaigns\" object is an array of campaign names (by adId) that will be initially loaded from Aerospike backed database and into the bidder's local memory. In the Campaigns/payday.json file, for demo purposes there is one campaign pre-loaded for you called \"ben:payday\". Note, this field accepts JAVA regular expressions. In the example the campaign that matches 'ben:payday' is loaded. To load all campaigns use '(.*). To load only campaigns prefixed with 'ben', then use 'ben(.*)'.\n\nIf you plan to bid (and win), you must have at least 1 campaign loaded into the bidder. If you have multiple campaigns, and a bid request matches 2 or more campaigns, the campaign to bid is chosen at random.\n\nTHEORY OF OPERATION\n=====================================\nAerospike is used as the shared context between all bidders. All shared data is kept in Aerospike, and all bidders connect to this Aerospike instance to share data. Specifically, the response to a bid request, a 'bid', is stored\nin Aerospike after it is made, because on the win notification, a completely separate bidder may process the win, and the\noriginal bid must be retrieved as quickly as possible to complete the transaction. A database query is far to slow to accomplish\nthis. This is the main use for Aerospike\n\nZeroMQ is used as the publish/subscribe system. Commands are sent to running bidders over ZeroMQ publish channel.\nLikewise responses to commands are sent back on another ZeroMq channel, 'responses'. Clickthrough, wins, and pixel-file notification is sent on yet channels, as set forth in the app.zeromq object.\n\nShared Database\n-------------------------------\nA database of Users and their campaigns is kept in a ConcurrentHashMap, that is stored in Aerospike as a Map. This\nallows the bidders to maintain a shared database. \n\nConfiguration\n--------------------------------\nA configuration file is used to set up the operating parameters of the bidder (such as Aerospike host and ZeroMQ \naddresses), located at ./XRTB/SampleCampaigns/payday.json; and is used to load any initial campaigns from the Database Aerospike. Upon loading the configuration file into the Configuration class, the campaigns are created, using a set of \nNode objects that describe the JSON name to look for in the RTB bid, and the acceptable values for that constraint.\n\nFor details look here: http://rtb4free.com/admin-mgmt.html#configuration-section\n\nReceive Bid\n-----------\nWhen the RTBBidder starts, it creates a an HTTP handler based on Jetty that handles all the HTTP requests coming into\nthe bidder. The handler will process mundane gets/posts to retrieve resources like images and javascript files placed in\nthe ./web directory. In addition, the bidder will produce a BidRequest object from the JSON payload of the HTTP post. The URI will determine the kind of exchange, e.g. Nexage.\n\nNote, each bid request is on a thread started by JETTY, For each one of these threads, N number of threads will be created for N campaigns. The number of total threads is limited by a configuration parameter \"maxConnections\". When max connections is reached, the bid request will result in a no-bid.\n\nCampaign Select\n---------------\nOnce the Handler determines the bid request and instantiates it, the BidRequest object will then determine which, if any of the campaigns are to be selected. 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omercnet/xrtb

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