The protocol specific reassembly option for HTTP are these:

Note that this is not sufficient in itself, this preference above is the master switch to enable it on the TCP layer, you will also have to make sure that the protocol specific reassembly option is enabled as well. This option will enable the TCP layer to perform reassembly of PDUs spanning multiple segments for all protocols that request it. To enable this feature you must enable the preference : (You can disable the TCP_Checksum_Verification test in preferences.) Preferences TCP_Checksum_Verification fails, then the packets will be ignored and reassembly will fail. If you use packet slicing and only capture parts of the packets OR if the packets have incorrect checksums, i.e. Note that TCP Reassembly ONLY works if you capture the entire packet and if all the checksums for that packet are valid. The support to do this is very easy to add to Wireshark if required for new protocols, so if your favorite protocol is missing, please give the Wireshark developers a shout. All in all probably something like 20 different protocols. These protocols include, but are not limited to, iSCSI, HTTP, DNS, Kerberos, CIFS, ONC-RPC etc.

Wireshark supports reassembly of PDUs spanning multiple TCP segments for a large number of protocols implemented on top of TCP.

Tcp retransmission wireshark shoretel