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--- development:snmp:http-library [2019/04/12 17:23] – adsilva
+++ development:snmp:http-library [2021/06/25 10:09] (current) – created - external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+====== HTTP Library ======
+ --- //[[avinash.dsilva@errigal.com|Avinash D'Silva]] 2019/04/12 09:25//
+The JavaHttpClient is a wrapper library developed as a part of R&D (in April 2019 IDMS-3748) so as to provide a HTTP client for our aging SnmpManager as it wasn't practical to upgrade the existing libraries.
+The JavaHttpClient was created to deal with the following primary challenges:
+  - Allow connecting to web servers with bad SSL
+  - Allow to connect(using curl fallback) to newer SSL ciphers/protocols (currently not supported in java 1.7)
+  - Allow to post/patch/put raw JSON/binary (This was till now done through hacky workarounds)
+  - Support reading and writing raw header information.
+Example usage:
+<code groovy>
+  import  com.errigal.snmpmanager.autodiscovery.http.*
+  String url = ""
+  String body ="""{"hi":"bye"}"""
+  CustomHttpResponse chr = null
+  CustomHttpClient client = new JavaHttpClient()
+  url = 'https://demo7260167.mockable.io/getTest'
+  log.info "url: "+url
+  chr = client.get(url,null)
+  log.info chr.dump()
+  assert chr.success == true
+  url = 'https://demo7260167.mockable.io/optionsTest'
+  log.info "url: "+url
+  chr = client.options(url,null)
+  log.info chr.dump()
+  assert chr.success == true
+  //head not testable
+  url = 'https://demo7260167.mockable.io/deleteTest'
+  log.info "url: "+url
+  chr = client.delete(url,null)
+  log.info chr.dump()
+  assert chr.success == true
+  url = 'https://demo7260167.mockable.io/postTest'
+  log.info "url: "+url
+  chr = client.post(url,body.getBytes(),'text/html',null)
+  log.info chr.dump()
+  assert chr.success == true
+  url = 'https://demo7260167.mockable.io/putTest'
+  log.info "url: "+url
+  chr = client.put(url,body.getBytes(),'text/html',null)
+  log.info chr.dump()
+  assert chr.success == true
+  url = 'https://demo7260167.mockable.io/patchTest'
+  log.info "url: "+url
+  chr = client.patch(url,body.getBytes(),'text/html',null)
+  log.info chr.dump()
+  assert chr.success == true
+</code>
+JavaHttpClient falls to CurlHttpClient if it is unable to process due to SSL specific exceptions.
+CustomHttpResponse has two convenience methods :
+There are some gotchas to remember due to the way RFC allows duplicate HTTP headers keys,
+The working is defined in the tests below
+. getCookie
+<code groovy>
+  void testResponse(){
+    CustomHttpResponse customHttpResponse = new CustomHttpResponse()
+    customHttpResponse.getHeaders().put("k0","v0")
+    customHttpResponse.getHeaders().put("sEt-CoOkIe","v1=x")
+    customHttpResponse.getHeaders().put("SET-COOKIE","v2=y")
+    String cookie = customHttpResponse.getCookie("v2")
+    assert cookie == "v2=y"
+  }
+</code>
+. getHeader
+<code groovy>
+  void testGetHeader(){
+    CustomHttpResponse customHttpResponse = new CustomHttpResponse()
+    customHttpResponse.getHeaders().put("k0","v0")
+    customHttpResponse.getHeaders().put("k1","v1")
+    customHttpResponse.getHeaders().put("k1","v2")
+    assert customHttpResponse.getHeader("k0") == "v0"
+    assert customHttpResponse.getHeader("k1") == "v1"
+  }
+</code>

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