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November 26, 2015 12:45
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HttpClient Logging - No leaks
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| Connection leased: [id: 66][route: {}->http://myhost:8080][total kept alive: 2; route allocated: 3 of 50; total allocated: 5 of 100] | |
| Connection leased: [id: 64][route: {}->http://myhost:8080][total kept alive: 4; route allocated: 3 of 50; total allocated: 5 of 100] | |
| Connection leased: [id: 64][route: {}->http://myhost:8080][total kept alive: 4; route allocated: 3 of 50; total allocated: 5 of 100] | |
| Connection leased: [id: 64][route: {}->http://myhost:8080][total kept alive: 4; route allocated: 3 of 50; total allocated: 5 of 100] | |
| Connection leased: [id: 64][route: {}->http://myhost:8080][total kept alive: 4; route allocated: 3 of 50; total allocated: 5 of 100] | |
| Connection leased: [id: 67][route: {}->http://myhost:8080][total kept alive: 3; route allocated: 3 of 50; total allocated: 5 of 100] | |
| http-outgoing-64: Shutdown connection | |
| Connection leased: [id: 67][route: {}->http://myhost:8080][total kept alive: 3; route allocated: 2 of 50; total allocated: 4 of 100] | |
| Connection leased: [id: 66][route: {}->http://myhost:8080][total kept alive: 2; route allocated: 2 of 50; total allocated: 4 of 100] | |
| http-outgoing-66: Shutdown connection | |
| Connection leased: [id: 67][route: {}->http://myhost:8080][total kept alive: 2; route allocated: 1 of 50; total allocated: 3 of 100] | |
| Connection leased: [id: 67][route: {}->http://myhost:8080][total kept alive: 2; route allocated: 1 of 50; total allocated: 3 of 100] | |
| Connection leased: [id: 68][route: {}->http://myhost:8080][total kept alive: 2; route allocated: 2 of 50; total allocated: 4 of 100] | |
| Connection leased: [id: 67][route: {}->http://myhost:8080][total kept alive: 3; route allocated: 2 of 50; total allocated: 4 of 100] | |
| Connection leased: [id: 68][route: {}->http://myhost:8080][total kept alive: 2; route allocated: 2 of 50; total allocated: 4 of 100] | |
| http-outgoing-68: Shutdown connection | |
| Connection leased: [id: 69][route: {}->http://myhost:8080][total kept alive: 2; route allocated: 2 of 50; total allocated: 4 of 100] | |
| http-outgoing-67: Shutdown connection | |
| Connection leased: [id: 70][route: {}->http://myhost:8080][total kept alive: 2; route allocated: 2 of 50; total allocated: 4 of 100] |
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In this sequence, connections #64, #66, and #67 are in-use. Connection #64 is then shut-down by HttpClient. The route allocations decrement, as expected. Notice that the connection with this ID no longer appears in the log. Connection #66 is then shut-down, with the route allocations decrementing again. A couple requests later, a new connection (allocation) is established (#68). The route allocations increment. This connection #68 only ends up being used for two requests before being discarded by HttpClient. The rest of the lines show two new connections being created and a third being discarded.
For more information, please see How to Read HttpClient Logging and Prevent Connection Leaks.