# \#bolt **URL:** https://community.neo4j.com/tag/bolt/149.md [Latest](https://community.neo4j.com/latest.md) · [Categories](https://community.neo4j.com/categories.md) · [Tags](https://community.neo4j.com/tags.md) --- ## [Can't connect to neo4j with cloudflare tunnel](https://community.neo4j.com/t/cant-connect-to-neo4j-with-cloudflare-tunnel/73921)
**Author:** [@michel69130](https://community.neo4j.com/u/michel69130)\ **Replies:** 5\ **Last updated:** [May 27, 2025, 6:31am UTC](https://community.neo4j.com/t/cant-connect-to-neo4j-with-cloudflare-tunnel/73921 "2025-05-27T06:31:43Z")
I have the database installed on my workstation at home, but I want to be able to access it from other networks on my laptop, especially when working with the python connector. My ISP doesn't provide me with a public IP,… --- ## [Casting a Node to a c# object](https://community.neo4j.com/t/casting-a-node-to-a-c-object/17968)
**Author:** [@bruceh](https://community.neo4j.com/u/bruceh)\ **Replies:** 2\ **Last updated:** [April 26, 2025, 2:01pm UTC](https://community.neo4j.com/t/casting-a-node-to-a-c-object/17968 "2025-04-26T14:01:01Z")
Hey Neo / C# units... Now that Neo4JClient is obselete (hasn't been updated in over a year) I assume new devs like me are using bolt 4.0. I'm looking for a nice way to cast a node or relationship into one of my c# obj… --- ## [How to connect to self-hosted database via Cloudflare Tunnel](https://community.neo4j.com/t/how-to-connect-to-self-hosted-database-via-cloudflare-tunnel/72749)
**Author:** [@tbocs](https://community.neo4j.com/u/tbocs)\ **Replies:** 0\ **Last updated:** [February 21, 2025, 3:46pm UTC](https://community.neo4j.com/t/how-to-connect-to-self-hosted-database-via-cloudflare-tunnel/72749 "2025-02-21T15:46:34Z")
Hello everyone! So I want to self-host neo4j db on my home server but it is behind CGNAT, which I need to bypass using things like Cloudflare Tunnel. But it seems that Cloudflare Tunnel does not support the Bolt protocol… --- ## [Cannot connect to neo4j server remotely](https://community.neo4j.com/t/cannot-connect-to-neo4j-server-remotely/69174)
**Author:** [@alexander\_diab](https://community.neo4j.com/u/alexander_diab)\ **Replies:** 7\ **Last updated:** [August 22, 2024, 1:26pm UTC](https://community.neo4j.com/t/cannot-connect-to-neo4j-server-remotely/69174 "2024-08-22T13:26:44Z")
Dear Community, In short; I cannot access my neo4j server remotely. I am trying to setup a remote neo4j server (enterprise version 5.22.0). I installed it on an Ubuntu 22.4 VM. In the neo4j.conf file I stated: … --- ## [Neo4j 4.4.12 java embedded - browser bolt connect issue](https://community.neo4j.com/t/neo4j-4-4-12-java-embedded-browser-bolt-connect-issue/58581)
**Author:** [@reubenhayes](https://community.neo4j.com/u/reubenhayes)\ **Replies:** 2\ **Last updated:** [August 6, 2024, 3:28am UTC](https://community.neo4j.com/t/neo4j-4-4-12-java-embedded-browser-bolt-connect-issue/58581 "2024-08-06T03:28:34Z")
Hello, I am making my first steps with neo4j. I have already familiarise myself on neo4j desktop but I also want to experiment with neo4j for java applications. So I have created a small test application using java 11,… --- ## [In neo4j 5.19 3 node cluster ( core ) port 7687 and 7474 are not listening](https://community.neo4j.com/t/in-neo4j-5-19-3-node-cluster-core-port-7687-and-7474-are-not-listening/68176)
**Author:** [@nikhilpawaskarlinux](https://community.neo4j.com/u/nikhilpawaskarlinux)\ **Replies:** 0\ **Last updated:** [May 30, 2024, 3:06pm UTC](https://community.neo4j.com/t/in-neo4j-5-19-3-node-cluster-core-port-7687-and-7474-are-not-listening/68176 "2024-05-30T15:06:23Z")
I am having neo4j 5.19 enterprise edition installed on 3 servers and I am trying to create cluster but when I am using the parameter below the port 7687 and 7474 are not listening dbms.cluster.discovery.endpoints=10.25… --- ## [Bolt 5.0 documentation](https://community.neo4j.com/t/bolt-5-0-documentation/61451)
**Author:** [@james2](https://community.neo4j.com/u/james2)\ **Replies:** 1\ **Last updated:** [March 16, 2023, 10:31am UTC](https://community.neo4j.com/t/bolt-5-0-documentation/61451 "2023-03-16T10:31:51Z")
I've brought neo4cl up to date with Bolt 4.3, and I'd like to implement support for 5.0 while I'm on a roll. The compatibility page indicates that there's a 5.0 version of the protocol, but I don't see any mention of it… --- ## [Explanation of error "WebSocket connection failure. Due to security constraints in your web browser, the reason for the failure is not available to this Neo4j Driver](https://community.neo4j.com/t/explanation-of-error-websocket-connection-failure-due-to-security-constraints-in-your-web-browser-the-reason-for-the-failure-is-not-available-to-this-neo4j-driver/58717)
**Author:** [@dana\_canzano](https://community.neo4j.com/u/dana_canzano)\ **Replies:** 2\ **Last updated:** [December 12, 2022, 3:30pm UTC](https://community.neo4j.com/t/explanation-of-error-websocket-connection-failure-due-to-security-constraints-in-your-web-browser-the-reason-for-the-failure-is-not-available-to-this-neo4j-driver/58717 "2022-12-12T15:30:13Z")
In Neo4j 3.0 and its implementation of the Bolt protocol, if a remote browser connects to Neo4j (http://\:7474) and attempts to authenticate, the following error may be encountered: \[red\]#WebSocket con… --- ## [How to speed up uploading data from csv in graph db](https://community.neo4j.com/t/how-to-speed-up-uploading-data-from-csv-in-graph-db/58988)
**Author:** [@kalyan\_b\_aninda](https://community.neo4j.com/u/kalyan_b_aninda)\ **Replies:** 1\ **Last updated:** [November 16, 2022, 12:45pm UTC](https://community.neo4j.com/t/how-to-speed-up-uploading-data-from-csv-in-graph-db/58988 "2022-11-16T12:45:38Z")
Hello , this is my first topic in neo4j community and I am learning neo4j .I am recently trying to upload data into neo4j graphDB from csv files. I have a written a python script for that. Among my csv files, some csv fi… --- ## [Python neo4j bolt driver 1.7, Cannot resolve replica server address on read\_transaction](https://community.neo4j.com/t/python-neo4j-bolt-driver-1-7-cannot-resolve-replica-server-address-on-read-transaction/10284)
**Author:** [@mc422](https://community.neo4j.com/u/mc422)\ **Replies:** 2\ **Last updated:** [July 14, 2021, 10:28am UTC](https://community.neo4j.com/t/python-neo4j-bolt-driver-1-7-cannot-resolve-replica-server-address-on-read-transaction/10284 "2021-07-14T10:28:22Z")
I have a Neo4j causal cluster deploy on kubernetes. The cluster has 3 cores and 3 replicas. Now I try to use python Neo4j bolt driver to connect. The problem happens when I use bolt+routing driver + read\_transaction, it … --- ## [Spring + Neo4J, TransientException broke connection for the thread](https://community.neo4j.com/t/spring-neo4j-transientexception-broke-connection-for-the-thread/40583)
**Author:** [@yevgeny.barkovsky](https://community.neo4j.com/u/yevgeny.barkovsky)\ **Replies:** 4\ **Last updated:** [June 29, 2021, 9:42am UTC](https://community.neo4j.com/t/spring-neo4j-transientexception-broke-connection-for-the-thread/40583 "2021-06-29T09:42:53Z")
0 I have Spring-boot application which updates Neo4J database using several threads created by ExecutorService. Because of multithreading, I have locks sometimes which are not problem by theirselves. But each lock gener… --- ## [How to update bolt protocol from 3.0 to 4.0](https://community.neo4j.com/t/how-to-update-bolt-protocol-from-3-0-to-4-0/40378)
**Author:** [@saiaakarsh\_koppula](https://community.neo4j.com/u/saiaakarsh_koppula)\ **Replies:** 1\ **Last updated:** [June 25, 2021, 6:29am UTC](https://community.neo4j.com/t/how-to-update-bolt-protocol-from-3-0-to-4-0/40378 "2021-06-25T06:29:44Z")
Hello, I'm getting the following error when I try to provide database name as a parameter to a session instance with python driver 4.3 . is there a way to update bolt protocol to the newest version, or is there anyt… --- ## [Will seabolt support 4.3?](https://community.neo4j.com/t/will-seabolt-support-4-3/39753)
**Author:** [@koji](https://community.neo4j.com/u/koji)\ **Replies:** 1\ **Last updated:** [June 14, 2021, 7:02am UTC](https://community.neo4j.com/t/will-seabolt-support-4-3/39753 "2021-06-14T07:02:00Z")
I would like to create a new language driver for 4.3. seabolt hasn't been updated recently, are there any alternative projects? --- ## [Unable to connect to neo4j bolt server using container IP](https://community.neo4j.com/t/unable-to-connect-to-neo4j-bolt-server-using-container-ip/36342)
**Author:** [@vchinnipilli](https://community.neo4j.com/u/vchinnipilli)\ **Replies:** 2\ **Last updated:** [April 6, 2021, 6:22am UTC](https://community.neo4j.com/t/unable-to-connect-to-neo4j-bolt-server-using-container-ip/36342 "2021-04-06T06:22:45Z")
Team, I am trying to spin up neo4j container and neovis(node) container in a cloud server in the same network. The issue is when I provide the internal IP of the neo4j container for const driver = neo4j.driver('bolt://n… --- ## [Correct URL for API calls to Aura?](https://community.neo4j.com/t/correct-url-for-api-calls-to-aura/12108)
**Author:** [@fkqd](https://community.neo4j.com/u/fkqd)\ **Replies:** 10\ **Last updated:** [December 3, 2019, 10:11pm UTC](https://community.neo4j.com/t/correct-url-for-api-calls-to-aura/12108 "2019-12-03T22:11:05Z")
Hi all OK I feel dumb but I can't figure out what URL to use for API calls to a DB on Aura. With a local DB I can connect fine: with Postman: http://localhost:7474/db/data/transaction/commit with the PHP client: -\>a… --- ## [Spring boot java driver bolt dependency in MAVEN](https://community.neo4j.com/t/spring-boot-java-driver-bolt-dependency-in-maven/30985)
**Author:** [@tarun](https://community.neo4j.com/u/tarun)\ **Replies:** 2\ **Last updated:** [January 11, 2021, 11:20am UTC](https://community.neo4j.com/t/spring-boot-java-driver-bolt-dependency-in-maven/30985 "2021-01-11T11:20:11Z")
the dependency of OGM (Object graph mapping) is not getting added in pom.xml in spring boot and not detecting; when adding the bolt driver to connect to neo 4j I have used all these dependencies (but getting error of mi… --- ## [Explanation of error "WebSocket connection failure. Due to security constraints in your web browser, the reason for the failure is not available to this Neo4j Driver](https://community.neo4j.com/t/explanation-of-error-websocket-connection-failure-due-to-security-constraints-in-your-web-browser-the-reason-for-the-failure-is-not-available-to-this-neo4j-driver/259)
**Author:** [@dana\_canzano](https://community.neo4j.com/u/dana_canzano)\ **Replies:** 12\ **Last updated:** [December 28, 2020, 8:10am UTC](https://community.neo4j.com/t/explanation-of-error-websocket-connection-failure-due-to-security-constraints-in-your-web-browser-the-reason-for-the-failure-is-not-available-to-this-neo4j-driver/259 "2020-12-28T08:10:51Z")
In Neo4j 3.0 and its implementation of the Bolt protocol, if a remote browser connects to Neo4j (http://\:7474) and attempts to authenticate, the following error may be encountered: \[red\]#WebSocket con… --- ## [How to fix \`context deadline exceeded\` error from neo4j cluster/leader?](https://community.neo4j.com/t/how-to-fix-context-deadline-exceeded-error-from-neo4j-cluster-leader/28935)
**Author:** [@karthik.shetty](https://community.neo4j.com/u/karthik.shetty)\ **Replies:** 1\ **Last updated:** [November 16, 2020, 10:43pm UTC](https://community.neo4j.com/t/how-to-fix-context-deadline-exceeded-error-from-neo4j-cluster-leader/28935 "2020-11-16T22:43:01Z")
Hi, I have set up a 3 node neo4j casual cluster and trying load almost 1 million records from my Mongo database to Neo4j cluster nodes. I'm loading 10K records at a time using a bolt driver within an API. API runs for a… --- ## [Simple bolt driver](https://community.neo4j.com/t/simple-bolt-driver/12011)
**Author:** [@stefanak\_michal](https://community.neo4j.com/u/stefanak_michal)\ **Replies:** 1\ **Last updated:** [October 26, 2020, 6:59am UTC](https://community.neo4j.com/t/simple-bolt-driver/12011 "2020-10-26T06:59:03Z")
Hi. I've passion for PHP and I fall in love with Neo4j. I was looking for opportunity to use it for many years. It was worth it. But at first moment I was little disappointed about GraphAware PHP driver. It's huge and I… --- ## [Connecting with bolt to secured database](https://community.neo4j.com/t/connecting-with-bolt-to-secured-database/22457)
**Author:** [@hreskodavid57](https://community.neo4j.com/u/hreskodavid57)\ **Replies:** 1\ **Last updated:** [August 3, 2020, 4:13pm UTC](https://community.neo4j.com/t/connecting-with-bolt-to-secured-database/22457 "2020-08-03T16:13:19Z")
Hi I am using org.springframework.boot:spring-boot-starter-data-neo4j -\> 2.2.3.RELEASE library to work with Neo4j. I am trying to connect to my database instance (4.1.0 version) via bolt driver. Via the browser it shows … --- ## [Neo4jError: Unknown Bolt protocol version: 0](https://community.neo4j.com/t/neo4jerror-unknown-bolt-protocol-version-0/21149)
**Author:** [@dinogowda](https://community.neo4j.com/u/dinogowda)\ **Replies:** 9\ **Last updated:** [July 15, 2020, 1:51pm UTC](https://community.neo4j.com/t/neo4jerror-unknown-bolt-protocol-version-0/21149 "2020-07-15T13:51:55Z")
Hi Team I have setup Neo4j on AWS. To this DB i am able to connect and fetch data using Bolt protocol via python code , however trying to connect to DB from Javascript results in below error. Neo4jError: Unknown Bolt … --- ## [Can i run Preferential Attachment for large sample inputs](https://community.neo4j.com/t/can-i-run-preferential-attachment-for-large-sample-inputs/18940)
**Author:** [@kalyan\_b\_aninda](https://community.neo4j.com/u/kalyan_b_aninda)\ **Replies:** 0\ **Last updated:** [May 20, 2020, 7:26am UTC](https://community.neo4j.com/t/can-i-run-preferential-attachment-for-large-sample-inputs/18940 "2020-05-20T07:26:15Z")
Hello I am trying to find the preferential Attachment score for a large sample of nodes. def Prefer\_Attachment\_query2(listval): customer\_id=listval\[0\] merchant\_id=listval\[1\] #print(x,y) prefquery="""MAT… --- ## [Connection Error using Python Driver](https://community.neo4j.com/t/connection-error-using-python-driver/17963)
**Author:** [@nicknapier95](https://community.neo4j.com/u/nicknapier95)\ **Replies:** 7\ **Last updated:** [May 16, 2020, 12:06am UTC](https://community.neo4j.com/t/connection-error-using-python-driver/17963 "2020-05-16T00:06:54Z")
Hi, So I am working within a closed AWS environment and have set up Neo4j 4.0.3 Community edition. When connecting to the server using the python driver with neobolt I receive no issue on the local machine. I have opene… --- ## [Opt-in to use native types with reusing existing Neo4j driver instance](https://community.neo4j.com/t/opt-in-to-use-native-types-with-reusing-existing-neo4j-driver-instance/17895)
**Author:** [@frank](https://community.neo4j.com/u/frank)\ **Replies:** 0\ **Last updated:** [April 30, 2020, 1:38pm UTC](https://community.neo4j.com/t/opt-in-to-use-native-types-with-reusing-existing-neo4j-driver-instance/17895 "2020-04-30T13:38:15Z")
I try to use the Micronaut Neo4j integration, which provides a org.neo4j.driver.v1.Driver bean, in combination with the Neo4j-OGM native property types. Currently I use the following sessionFactory bean @Requires(class… --- ## [BrokenPipeError: \[Errno 32\] Broken pipe Neo4j and Python using Multi Processing](https://community.neo4j.com/t/brokenpipeerror-errno-32-broken-pipe-neo4j-and-python-using-multi-processing/16866)
**Author:** [@pradeep15142](https://community.neo4j.com/u/pradeep15142)\ **Replies:** 0\ **Last updated:** [April 9, 2020, 1:37pm UTC](https://community.neo4j.com/t/brokenpipeerror-errno-32-broken-pipe-neo4j-and-python-using-multi-processing/16866 "2020-04-09T13:37:57Z")
Kindly, please have a look at this link and help me in solving the issue. Thanks Pradeep --- ## [Different result when query with bolt vs https protocol](https://community.neo4j.com/t/different-result-when-query-with-bolt-vs-https-protocol/15767)
**Author:** [@tuduc93](https://community.neo4j.com/u/tuduc93)\ **Replies:** 0\ **Last updated:** [March 13, 2020, 8:05am UTC](https://community.neo4j.com/t/different-result-when-query-with-bolt-vs-https-protocol/15767 "2020-03-13T08:05:53Z")
Neo4j version: 3.5.13 OS version: CentOS 7 When connect with bolt protocol, result return different with result return from https protocol (complex query, can't reproduce with simple data) More, can't run explain/prof… --- ## [Bolt driver for Python "ValueError: filedescriptor out of range in select()"](https://community.neo4j.com/t/bolt-driver-for-python-valueerror-filedescriptor-out-of-range-in-select/15229)
**Author:** [@Yo.Ahiru](https://community.neo4j.com/u/Yo.Ahiru)\ **Replies:** 2\ **Last updated:** [March 3, 2020, 12:16pm UTC](https://community.neo4j.com/t/bolt-driver-for-python-valueerror-filedescriptor-out-of-range-in-select/15229 "2020-03-03T12:16:40Z")
Hi all, I would like to ask you about Neo4j filedescriptor ERROR. It says "ValueError: filedescriptor out of range in select()" after some loads. Its environment is as follows. Server: Amazon AWS OS: Amazon Linux 2 N… --- ## [How to speed up uploading data from csv in graph db](https://community.neo4j.com/t/how-to-speed-up-uploading-data-from-csv-in-graph-db/9513)
**Author:** [@kalyan\_b\_aninda](https://community.neo4j.com/u/kalyan_b_aninda)\ **Replies:** 5\ **Last updated:** [August 29, 2019, 4:43am UTC](https://community.neo4j.com/t/how-to-speed-up-uploading-data-from-csv-in-graph-db/9513 "2019-08-29T04:43:37Z")
Hello , this is my first topic in neo4j community and I am learning neo4j .I am recently trying to upload data into neo4j graphDB from csv files. I have a written a python script for that. Among my csv files, some csv … --- ## [Faking dynamic rel types](https://community.neo4j.com/t/faking-dynamic-rel-types/8178)
**Author:** [@mdfrenchman](https://community.neo4j.com/u/mdfrenchman)\ **Replies:** 0\ **Last updated:** [June 19, 2019, 3:09pm UTC](https://community.neo4j.com/t/faking-dynamic-rel-types/8178 "2019-06-19T15:09:04Z")
One of the things I've seen requested (as far back as version 2.x I think), that is planned to come in GQL 10, is being able to use variables for rel names. Something like: UNWIND \['rel1', 'rel2'\] as dynamicType MATCH … --- ## [Souldn't Neo4j browser or clients accept the ws:// and wss:// schemes?](https://community.neo4j.com/t/souldnt-neo4j-browser-or-clients-accept-the-ws-and-wss-schemes/6989)
**Author:** [@marco\_brandizi](https://community.neo4j.com/u/marco_brandizi)\ **Replies:** 0\ **Last updated:** [April 29, 2019, 9:50pm UTC](https://community.neo4j.com/t/souldnt-neo4j-browser-or-clients-accept-the-ws-and-wss-schemes/6989 "2019-04-29T21:50:33Z")
This is a follow-up of this other message. It seems that Apache is able to understand websocket connections and to reverse-proxy them. The problem is I cannot type ws://proxy/... on the Neo4j browser, it tells me "unkno… [Next page](https://community.neo4j.com/tag/bolt/149.md?match_all_tags=true&page=1&tags%5B%5D=bolt)